7th grade math. Easy but hard for me

7th Grade Math. Easy But Hard For Me
7th Grade Math. Easy But Hard For Me

Answers

Answer 1
feel free to ask me if you didn't understand a part
7th Grade Math. Easy But Hard For Me
Answer 2

Answer:

∠YDC = 140°

∠FAB = 75°

Step-by-step explanation:

17)
The equation

[tex]13x-3=55+3x+2[/tex]

[tex]13x-3x=55+2+3[/tex]

[tex]10x=60\\x=60/10=6[/tex]

∠FAB = 13(6) - 3 = 78 - 3 = 75°

18)

The equation

[tex]15x+5=80+6x+6[/tex]

[tex]15x-6x=80+6-5[/tex]

[tex]9x=81\\x=81/9=9[/tex]

∠YDC = 15(9)+5 = 135 + 5 = 140°

Hope this helps


Related Questions

BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!
Jake made a rectangular garden area as shown in the figure. He wants to add 3 inches of topsoil to the entire area.

A rectangle has a length of 36 inches and height of 15 inches.

How much topsoil does Jake need to get at the nursery?
540 in.3
1,080 in.3
1,386 in.3
1,620 in.3



and if you can please answer some of my other questions

Answers

1,620 in^3 is the answer. You multiply 15 by 36 by 3 and get 1,620
1620 is the answer I hope it helps

Please answer all 3 empty box's 5 points each but beware if you use my points for no reason I'll report you

Answers

Answer:

rectangular prism i got 197

Step-by-step explanation:

i squared the 3 numbers of the box then added them then divided by 3

197 is the answer yh

Main idea: Experimental and theoretical probability
1. Fill in the blanks to compare experimental and theoretical probability.

If you know all of the possible outcomes of a trial, and all outcomes are equally likely, you can calculate the _______________ probability of a certain event.
The theorical probability of a coin landing on heads is _____%.
You can estimate probability by doing an _______________.
Experimental probability is also called _______________ probability.

2. Fill in the blanks to describe using probability experiments to estimate an unknown probability.

To estimate an unknown probability, _______________ the number of successful trials by the _________________________ of trials.
The more trials you perform, the more _______________ the _______________ tends to be.

3. Complete the steps to show how to estimate probabilities by repeating trials.

4. Anna does not know what colors of blocks are in a bag. She selects a block out of the bag, records its color, and replaces it in the bag. She repeats the process for a total of 50 trials, and then summarizes her data. Find P(yellow), the probability of choosing a yellow block.

Color
Green
Blue
Yellow
Number
18
22
10
Identify successful outcomes as choosing a _______________ block.
Of the 50 trials, _____ were successes.
Based on the data, the estimated probability of choosing yellow is _____. In simplest form, P(yellow) = _____.


Main idea: Conducting experiments
5. Complete the steps to estimate probabilities based on experimental data for this problem.

Marci made a 10-sided object and wrote a number from 0 to 9 on each face. She is not sure all the sides are equal in size, so she doesn't know the probability of rolling each number.

The sample space:
This tally table shows the data Marci collected from 10 rolls of her 10-sided object. Each mark represents one roll of that number. Fill in the estimated probability for each event based on the data after 10 rolls.


Estimated probabilities after 10 rolls
Rolled a:
0
1
2
3
4
5
6
7
8
9
Number of times


Probability







This table shows the data Marci collected from 100 rolls of her 10-sided object. Fill in the estimated probability for each event based on the data after 100 rolls.


Estimated probabilities after 100 rolls
Rolled a:
0
1
2
3
4
5
6
7
8
9
Number of times
6
14
7
13
9
11
8
12
11
9
Probability







Main idea: Estimating probability with relative frequency
6. Barry made four out of five free throws. Complete the table and answer the questions about the relative frequency of free throws made.


Free throws made
Free throws tried
Relative frequency








What is the estimated probability that Barry will make his next free throw? How likely is he to make the shot?





7. Complete the sentences to describe using relative frequency tables to estimate probability.

The probability of an event can be estimated by finding the ____________________ of the event.
The relative frequency is the number of times a(n) _______________ occurs divided by the number of observations.


Main idea: Using probability to approximate frequency
8. Tamara and her sister play a game using a spinner. A typical game involves 136 spins. The probability of spinning each color is . About how many times should Tamara expect the spinner to land on yellow? Let x represent the number of times the spinner lands on yellow.

Answers

How do really get out of the park in north east ff
1a.) theoretical

1b.) 50%

1c.) you can divide the number of events by the possible outcomes

1d.) Empirical Probability

2a.) divide, number

2b.) i’m not sure

the rest i’m not sure

Calculate the mean of the following list of numbers: 3, 5, 2, 10, 6, 3, 7, 3

Answers

6 I’m pretty sure but not 100 sure
6 Find the sum of the values by adding them all up. Divide the sum by the number of values in the data set.

Please help me thanks

Answers

Answer:

3) 1/6

4) 1/2

5) 1/2

6) 1/3

7) 1/2

8) 1/3

9) 0

10) 1

11) 5/6

12) 1/3

Step-by-step explanation:

3) There is only one 2 on a die. Thus, the probability would be 1/6.

4) There are 3 even numbers on a die (2, 4, 6). Thus, the probability would be 3/6 which simplifies down to 1/2.

5) There are also 3 odd numbers on a die (1, 3, 5). Thus, the probability would be 3/6, which again simplifies down to 1/2.

6) There are only 2 numbers greater than 4 on a die (5, 6). This makes the probability 2/6, which simplifies to 1/3.

7) There are 3 numbers less than 4 on a die (1, 2, 3). This makes the probability 1/2.

8) The probability of getting a 6 or 2 is 1/3. This is because when the probability statement says "or" you add the probabilities of the individual events to get the probability. In this case it would be 1/6 + 1/6 which equals 2/6, simplified to 1/3.

9) The probability of rolling a 7 is 0. There is no 7 on the die, so you would not be able to roll a 7.

10) All the numbers on a die are less than 10, this makes the probability 1.

11) There are 5 other numbers that aren't "5" on the die, this makes the probability 5/6.

12) Composite numbers are a number that can be formed by multiply 2 smaller numbers together. There are only 2 on a die, 4 and 6. Four is a composite number because 2*2 = 4. Six is a composite number because 3*2 = 6. Therefore, the probability will be 1/3 (2/6).

Hope this helps!! If you have any questions about my work please let me know down in the comments.

I only know 4 and 5: 1/2

The scatter plot below represents the amount of dog food a brand recommends based on the weight of the dog.

Which best describes the type of association shown in the scatter plot?

Answers

Answer:

Positive Linear Relationship

Step-by-step explanation:

positive linear relation

what is the measure of angle 7?
suppose the measure of angle 6 can be represented be (2x-5). what equation can be written to solve the value of x?
what is the value of x?

Answers

Answer:

<7 = 47, 2x - 5 + 47 = 180, x = 69

Step-by-step explanation:

<5 and <7 are vertical angles, which means that they have the same degree.

<7 + <6 = 180. <6 = 2x - 5. 2x - 5 + 47 = 180.

Solve

2x - 5 + 47 = 180

2x + 42 = 180

2x = 138

x = 69

The answer to this question is x=2.5

Without doing any calculations, compare expression A to expression B.

56 × 250 ( 13 × 250 ) + ( 12 × 250 )
Choose the words to complete the comparison.

Expression A is __________ expression B.
A. less than
B. greater than
C. equal to

Answers

Expression A is Greater Than expression B
Expression A is a is greater than expression B

An equation was created for the line of best fit from actual enrollment data. It was used to predict the dance studio enrollment values shown in the table:


Enrollment Month
January February March April May June
Actual 500 400 550 550 750 400
Predicted 410 450 650 650 600 450
Residual 90 −50 −100 −100 150 −50


Analyze the data. Determine whether the equation that produced the predicted values represents a good line of best fit.
No, the equation is not a good fit because the sum of the residuals is a large number.
No, the equation is not a good fit because the residuals are all far from zero.
Yes, the equation is a good fit because the residuals are not all far from zero.
Yes, the equation is a good fit because the sum of the residuals is a small number.

Answers

Answer:

Step-by-step explanation:

A point is missing from the graph of the relation below. The relation is not a function.
help please give right answer

Answers

The answer to this question is D (2,-2)


The answer is d (-2,2)

Which of the following statements about the drawing are true? Angle 1 is an acute angle. The measure of angle 1 is 90°. The lines are perpendicular. Angle 1 is a right angle.​

Answers

We need to see the drawling
We need photo pleaee

Find a Job !!20 POINTS!!
Directions: Calculate which job is the best option financially. (Problems in photo)
Show Work! This is part of my almost finished final! Please help!

Answers

Cashier at target would be the best option
Weekly check would get you $173.25
Monthly would get you $693
Yearly would get you $8316

Hope this helps
target cashier
weekly-$173.25
monthly-$693
yearly-$8316

I have no clue what this is and I’m gonna get a zero if I don’t finish this. [its literally the last assignment I have for the year]

Answers

25 degrees
155 degrees
25 degrees
25 degrees
110 degrees
30.5 degrees
74 degrees
25°
155°
25°
25°
110°
30.5°
74°

If m<10=60 degrees and m<11=81 degrees, find M<7.
I don't know the steps to do it, someone?

Answers

Answer:

99

Step-by-step explanation:

because m<11 equals 81 so 180 - 81 = 99.  

Check the picture below.

Fill in the blank to make the statement true.



1 3 over 4 space plus space 1 over 6 space plus ________ equals space 7 1 half

Answers

Answer: x= 385/12

Step-by-step explanation:

You would first change the denominator to some number that is common. Then combine the like terms. Lastly, subtract the fraction from the equal and you get your x.

[tex]\frac{13}{4} +\frac{1}{6} +x=\frac{71}{2} \\(\frac{39}{12})+(\frac{2}{12})+x=\frac{426}{12} \\\frac{41}{12}+x=\frac{426}{12} \\x=\frac{385}{12}[/tex]

the answer to the equation is X=385/12

Dalton got 15 notebooks for $1.75 each and 1 marker for $1.59.

Answers

Answer:

15 x 1.75 + 1.59

Step-by-step explanation:

Dalton spent $26.25 on the notebooks, along with $1.59 for one marker; adding up to a $27.84 total.

Answer:

$27.84

Step-by-step explanation:

Given :

⇒ 15 notebooks for $1.75 each

⇒ 1 marker for $1.59

==============================================================

Solving :

⇒ Total cost = 15 × 1.75 + 1.59

⇒ Total cost = 26.25 + 1.59

Total cost = $27.84

Find the surface area if the regular pyramid

Answers

Answer:

170.1 yd^2

Step-by-step explanation:

In picture attached

Answer:

205.2

Step-by-step explanation:

First get the area's of the 3 triangles on top of the base, the formula is base x height divided by 2

10 x 9 = 90

90 / 2 = 45

Multiply the area of the 3 sides together :

45 x 3 = 135

Now find the area of the base triangle :

9 x 7.8 = 70.2

To find the surface area of the ENTIRE shape you have to add all the sides :

135 + 70.2 = 205.2

(Will give 15 points)Solve the system of linear equations by substitution. x + y = 7 and 7x + y = 1

Answers

Answer:

(-1, 8)

Step-by-step explanation:

Make y the subject:

x + y = 7 ⟹ y = -x + 7

1. Substitute the value for y into 7x + y = 1 and solve for x:

7x + (-x + 7) = 1

7x - x + 7 = 1

6x + 7 = 1

6x + 7 - 7 = 1 - 7

6x = -6

6x ÷ 6 = -6 ÷ 6

x = -1

2. Substitute the given value of x into x + y = 7 and solve for y:

x + y = 7

-1 + y = 7

-1 + 1 + y = 7 + 1

y = 8

Therefore, the solution to this system of equations is: (-1, 8).

Learn more here:

brainly.com/question/2648990

(-1,8) u sub in the y and x for the x

Michael is making a card for his dad's birthday. He's shaded a triangular section on the card where he wants to write his dad a message. What is the area of the parts of the card that are not shaded?(sides are 12cm, 3,, 9 )

144
108
72
66

Answers

Answer:

Option c) 72 cm²

Step-by-step explanation:

In the figure attached we can see a rectangle ABCD with length 12 cm and width 9 cm.

A  triangle PEF with height BE and base EF.

Since side AE = 3 cm, so side EB = EC = 9 - 3 = 6cm

and EF = AD = 12 cm

Now we will find the area of of the parts of the card that are not shaded.

Area of parts that are not shaded = Area of rectangle - area of shaded triangle

= (12×9) - 1/2 (BE)(EF)

= 108 - 1/2(6)(12) = 108 - (3)(12) = 72

Option c) 72 cm² is the area of non shaded part.

Brainlist to the right answer :)

Answers

Answer 1 I am pretty sure
Answer is Letter A
You subtract 15, you get 36 divided by 12 and you get 3 and finally you have left b<3

50 POINTS
A pencil at a stationery store costs $1, and a pen costs $1.50. Shawn spent $12 at the store. He bought a total of 9 items. Which system of equations can be used to find the number of pencils (x) and pens (y) he bought?

a
1.5x + y = 12
x = 9y

b
x + 1.5y = 12
x + y = 9

c
x + 9y = 12
x = 1.5y

d
9x + y = 12
x = 1.5y

Answers

Answer:

The answer is B

Step-by-step explanation:

Only Logical Answer here

the answer is B. x represents the number of pencils and y represents the number of pens.

A helicopter takes off from ground level and rises to a cruising elevation. The pilot descends to ground level, picks up a reporter, and transports her to a helipad on top of a building. Which graph shows the height of the helicopter over time? HElp pleasee please correct answer

Answers

Answer and step-by-step explanation:

starting at ground level means the helicopter starts at the bottom, works its way up to a cruse, then drops to ground level then goes to the top of a building meaning it would look up-and-down like

this graph should be the one you're looking for

hope this helps:)

Starting from ground level means the helicopter takes off from the bottom climbs to a cruse, then descends to ground level before counting up and down.

pls answer I will mark brainliest

Answers

Answer: The answer is 36ft³, or 2916ft.

36ft^3 or 2,916ft
Formula is given plug into calculator
V= 4/3 • 3 • 729

We’re told to replace pi with 3
And 9^3 (9•9•9) = 729

Multiply and you get 2,916ft and simplify It to cube root to get 36ft^3

HELP ME PLEASE!!
REMEMBER TO SHOW ALL WORK
THANK YOU!!

Answers

Answer: 5

Explanation: Sarah has 3 more than George, let’s minus out 3 first from 13. That will give us 10. Now, it has Sarah has twice as many books as George, so let’s divide 10 by 2. Now that will give us 5 and that’s the answer.
Answer: 5

Explanation:
13 minus 3 = 10
10 divided by 2 is 5

22,064 ÷ 394 equals what?

Answers

Answer:

the correct answer is 56

Step-by-step explanation:

22064÷394=56

The solution is : 22,064 ÷ 394 equals 56.

Here, we have,

given that,

22,064  divided by 394

Given the following mathematical expression;

22,064 /  394

We would apply the law of division for fractions.

22,064 /  394

= 22,064 ÷ 394

= 56

the result of the division.

Hence, The solution is : 22,064 ÷ 394 equals 56.

To learn more on division click:

brainly.com/question/21416852

#SPJ6

Field Trip Cost !!20 POINTS!!
Your principal has chosen you to help him/her to determine the cost of each part of the field trip. You must use your knowledge of solving equations in order help your principal out. Please help ASAP

Answers

Answer and work in the picture.

I did not understand q.2, so I left it blank.

Hope this helps!

I assume the answer for question 2 is ≈$5.23

Explanation:
First, I subtracted the fee from the budget, since I don't believe the service fee is a part of each ticket.
542.94-45.82=497.12

Then, I divided the answer from the equation to the number of people that are going, since ticket costs would be even amongst the 90 people.
497.12/90≈5.52

12. Convierte estas fracciones impropias en números mixtos:
A. 15/7=
B. 16/6=
C. 12/5=
D. 48/7
Por favor.

Answers

        ¡Hola! Voy a hacer el mismo proceso para cada uno.

        Primero, restaré el denominador del numerador hasta que sea una fracción propia. También simplificaré si es necesario.

        Luego, "volveré a sumar los números enteros al número" como un número mixto.

A. 15/7

[tex]\displaystyle \frac{15-7-7}{7} =\frac{1}{7}[/tex]

[tex]\displaystyle \frac{1}{7}+1+1=[/tex]

      [tex]\displaystyle 2\frac{1}{7}[/tex]

B. 16/6

[tex]\displaystyle \frac{16-6-6}{6} =\frac{4}{6}=\frac{2}{3}[/tex]

[tex]\displaystyle \frac{2}{3}+1+1=[/tex]

      [tex]\displaystyle 2\frac{2}{3}[/tex]

C. 12/5

[tex]\displaystyle \frac{12-5-5}{5} =\frac{2}{5}[/tex]

[tex]\displaystyle \frac{2}{5}+1+1=[/tex]

      [tex]\displaystyle 2\frac{2}{5}[/tex]

D. 48/7

[tex]\displaystyle \frac{48-7-7-7-7-7-7}{7} =\frac{6}{7}[/tex]

[tex]\displaystyle \frac{6}{7}+1+1+1+1+1+1=[/tex]

      [tex]\displaystyle 6\frac{6}{7}[/tex]

A. 2 1/7
B. 2 2/3 simplest form
C. 2 2/5
D. 6 6/7


Hope this helps ;)

a circle is drawn within as shown. what is the best approximation for the area of the shaded region? use 3.14 for pie

Answers

Answer:

7536 espero que te ayude

21.5in^2 is your answer.
the formula for a circles area is pi•r^2
since the square is the same height as the circle, we can conclude that side length of the square is equal to the diameter of the circle.
the radius (r) is half the diameter.
so using our area formula we will write our formula as 3.14•5^2 and your answer is 78.5. Thats the area of the circle but we are looking for the area of the shaded region. find the area or the square by squaring the side length 10^2 or 10•10. to get the area of the square, 100. now subtract 100-78.5 to get the area of the shaded leftover region.

Solve for x: 24 = -2(r + 9)
HELP

Answers

Answer:

r = -21

Step-by-step explanation:

-2(r + 9)

-2 (-21 + 9)

-21 + 9 = -12

-2(-12)

= 24

Answer:

-21

Step-by-step explanation:

Detailed explanation:

24 = -2(r + 9)

First, I did distributive property

24 = -2r -18

Now I will add 18 to both sides

42 = -2r

Now I will divide both sides by -2

-21 = r

Please give Brainliest if you find this useful.

I N E E D HELPPPPPPPPP its math 30 points pls help!

Answers

Answer: in order of question boxes presented

3 = weekly rainfall in seattle = 1200 cm

1 = weekly rainfall in portland and how much = week 3 and 800

2 = flavor ice cream girls prefer over boys = chocolate, strawberry and cookies and cream

edited to correct #1

i apologize its hard to see the graphs on iphone

Step-by-step explanation:

identified answer from graphs given

Question 3: Week #3 rain is 1200
Question 1: Week 3, and it’s 800
Question 2: Strawberry, Chocolate, Cookies and Cream.
Other Questions
12. Calculate. a) - (-/-)2 c) 49 In XYZ, x = 27 cm, y = 79 cm and Z=142. Find the length of z, to the nearest centimeter. I want to know what is the pressure of the stratosphere simple numbers Im in 6 grade Escribe sobre lo que opinas del SAT Please help! Problem is below! (25 points max!) Select the correct answer. a sample of an element was poured from one container into a second container. it took on the shape of the second container. it was then cooled. after cooling, the element was removed from the container and kept its new shape. what happened to the atoms of the element wt they were cooled in the second container? oa. they began to escape into the air. ob. they stopped being attracted to nearby atoms. oc. they stopped moving past the atoms around them. od. they began to move more quickly. What skills might you develop by participating in the speech club or the debate team that could help you as an animator? How will the solution of the system y > 2x + Two-thirds and y < 2x + One-third change if the inequality sign on both inequalities is reversed to y < 2x + Two-thirds and y > 2x + One-third?Answer: There is no solution to the system in its original form. There are no points in common. If the signs are reversed, the system has an intersection with an infinite number of solutions. Please help 40 points!!!! choose a scientist from (democritus, john dalton, jj thomson, ernest rutherford, niels bohr, erwin schrodinger or james chadwick) . conduct research using outside sources. be sure to choose reliable resources such as government, scientific, and educational websites. document all research in your own words. be sure to properly cite all sources used in your assignment. research and respond to the following: what were experiences in his life that led to his interest in science and the study of the atom? (3-5 sentences paraphrased) defend his work on the atom and its contribution to the modern atomic model. (3-5 sentences paraphrased) point out which contributions are present in the modern atomic model and which were eventually disproven and thus are not part of the modern model. (3-5 sentences paraphrased) works cited: list all of the websites used to find the information. you should have at least 2. G a magnetic field perpendicular to the plane of a wire loop is uniform in space but changes with time t in the region of the loop. if the induced emf in the loop increases linearly with time t, then the magnitude of the magnetic field must be proportional to A book store is hosting a special night in which families can enjoy a story and craft time. Tickets to theevent must be purchased ahead of time and are $1.50 for children and $2.50 for adults. So far, 45children's tickets have been sold, which is 60% of the total tickets sold. How many tickets have beensold so far? Show your calculations or explain how you got your answer. State 2 features each viruses have in common with non living things Write your argument paragraph in the space below. Use evidence from the chart you studied in your response. QUESTION 8If cos x = -OA. 175OB. 1500OC. 1350OD.120-32and 90 A Is x + 3 a factor of P(x) = x - 5x + 3x + 9 ? Explain. When organizing an Agile Release Train to optimize the flow of work and increase the delivery of value, which three DevOps practices are encouraged What is 95x9 divided by 14? A group of customers that a business decides to focus its marketing efforts and, ultimately, its products on is a _____. target market niche industrial market consumer market Question 5What keyboard button do you hold to select multiple cells simultaneously?ShiftAltCtrlTab2 p2 nts HURRY I NEED HELP QUICKGaira was asked to evaluate the algebraicexpression 3.8x + 6 when x = 7.5. 3.8(7.5) + 6(7.5) 28.5 + (45) (16.5)