2x+7=19 solving two-step equations

Answers

Answer 1

Answer:

x=6

Step-by-step explanation:

divide each term by 2 then simplify

Answer 2

Answer:

6

Step-by-step explanation:

First what you do is you subtract 7 from both sides to get 2x by itself.

2x + 7 - 7 = 19 - 7

2x = 12

Then you divide 2 from both sides to get x by itself.

2x/2 = 12/2

x = 6

Your answer is then x = 6.


Related Questions

What is the slope of 3x-2y=7?

Answers

Answer:

The slope is -3/2

Step-by-step explanation:

Hope this helped have a good day!

How do organism replace dead or injured cells? Organisms can take cells from other organisms. Organisms are limited to the amount of new cells that they can make through their lifetime. Organisms can make new cells by consuming other organisms. Organisms go through mitosis that allows new identical cells to be made.

Answers

Answer: Organisms go through mitosis that allows new identical cells to be made.

explanation:

mitosis also occures when cells are worn out or are injured and the mitosis will replace the injured cells

- Mt. Everest is considered the tallest mountain in the world at 8,848 meters above sea level. In fact, the forgest

mountain in the world is Mauna Loa, in Hawai'i, Mauna Loa rises 4, 170 meters from sea level to the top of the

summit, but its base is deep under water. The base of the mountain is at -5,000 meters,

A probe is dropped 7, 500 meters straight down into Mauna Los from its summit.

At what height is the probe, relative to sea level?

meters

How far is the probe from the base of the volcano?

meters

Answers

Answer: 10000

A.) 4170m above sea level ;3330m below sea level

B) 1670 m from the base.

Step-by-step explanation:.

Given that:

Mauna Loa :

4,170 meters (from sea level to summit)

-5000 meters (base of mountain to sea level)

Depth of probe dropped from summit of Mauna Loa = 7500 m

Height of probe relative to sea level :

Depth of probe - height of Mauna Loa(from sea level to summit)

7500 m - 4170 m = 3330 m

Hence, height of probe relative to sea level :

4170m above sea level

3330m below sea level

Distance of probe from base of volcano:

Total depth of Mauna Loa = (4170 + 5000) = 9170m

Total depth of probe = 7500 m

Distance of probe from base :

9170 - 7500 = 1670 m

The probe is 1670 m from the base of the volcano.

I'm more than 9 dozen and less than the number of days in 4 months. The sum of my digits is 11.

Answers

The answer would be 119

More than 9 dozen (9 x 12 = 108)

And

Less than the number of days in 4 months (4 x 30 = 120 or 4 x 31 = 124)

Answer: 92 or 119

in 4 months, 2 months with 30 days per month,  2 months with 31 days per month

suppose: the number to find is X

have: 90 < X < 30.2 + 31. 2 ⇔ 90 < X < 122

if X is a number has 2 digits => X is xy

=> [tex]\left \{ {{x+y=11} \atop {90<x\leq 100}} \right.[/tex]

=> xy = 92

if X is a number has 3 digits => X is abc

we have: [tex]\left \{ {{a+b+c=11} \atop {100\leq abc<122}} \right.[/tex]

because 100 ≤ abc < 122 => a = 1; b = 0 or 1

+) if a =1 ,b = 0 but a+ b +c = 11 => c = 10 (removed because c is a 1-digit number)

+) if a = 1, b = 1 => c = 9

=> abc = 119

=> X is 92 or 119

Step-by-step explanation:

Hi can someone help me please!
I’ll mark the first person to answer brainliest

Answers

1- 4/7 + 1/3
4/7 = 12/21 + 7/21 = 19/21
21/21 - 19/21 = 2/21
D would be the correct answer

A student collected monetary pledges for a fundraiser. One donor pledged to contribute $5 for each mile walked by the student during the fundraising walk up to a maximum of six miles.

A. is the situation continuous or discrete
B.write the domain and range of the situation



Answers

Answer:

A. The situation is discrete B. i. { x : 0 ≤ x ≤ 6; x ∈ Z} ii. { C = 5x : 0 ≤ C ≤ 30; C ∈ Z}

Step-by-step explanation:

A. The situation is discrete since we have integral values for the amount paid per mile walked. The amount per mile is $5 and is only paid if a complete mile is walked. So, it is a discrete situation.

B. i. Since 0 miles represents 0 distance and the student walks a maximum of 6 miles, let x represent the distance walked. So the domain is 0 ≤ x ≤ 6 where x ∈ Z where Z represent integers.

{ x : 0 ≤ x ≤ 6; x ∈ Z}

ii. Since at 0 miles the amount earned is 0 miles × $5 per mile = $ 0 and at the maximum distance of 6 miles, the amount earned is 6 miles × $5 per mile = $ 30, let C represent the amount donated in dollars. So the range is 0 ≤ C ≤ $ 30 where C = 5x.

{ C = 5x : 0 ≤ C ≤ 30; C ∈ Z}

1 = 5x + 2; w = x^2 + 1
Can someone help me with this question?;(

Answers

From the first equation x=-1/5
So if x is -1/5 then substitute it into the second equation and you get W=11/9

Hope this helps x

Answer:

5x^3 + 5x+ 2x^2 + 2

Step-by-step explanation:

(5x+2)(x^2+1)

5x^3 + 5x+ 2x^2 + 2

What is the slope of the line that contains the points (4,3) and (2, 7)? A. - 5 B. 2 C. -2 O D. -5​

Answers

Answer:

C. -2

Step-by-step explanation:

hope that helps! :)

Explain what is occurring in each chunk of the graph

Answers

Answer:

Please check the explanation.

Step-by-step explanation:

As the given graph includes distance 'd' at the y-axis and time 't' at the x-axis.

so from the distance-time graph, it is clear that the graph includes 5 chunks.

The first chunk of the graph indicates that the object has started traveling. And the distance 'd' is being covered in time 't', as the slope is upward, hence the speed of the object is increasing.

Please note that speed is basically the distance covered per unit time.

The second chunk of the graph indicates the no distance is being covered. It means the object is at rest.

The third chunk of the graph indicates that the distance 'd' is being covered in time 't', as the slope is again upward, hence the speed of the object is increasing and the object has started traveling.

The fourth chunk of the graph indicates that the slope is downward, and the object has started traveling to get back to the destination, and eventually, the object has reached the starting point.

help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Straight lines.

Since there are more than one lines that can land plane safely, we take one of it,

When, X = 10 and Y = 7, so the equation we get as,

y-7 = m(x-10) + c

lets find slope, that is value of m,

y2-y1/x2-x1 = m

so, 9-7/ 7-10 = 2/-3

so, m= -2/3

so the final Equation is,

=> y-7 =(-2/3)(x-10) +c

Find an explicit rule for the nth term of the sequence.

-4, -8, -16, -32, ...

A) an = -4 • 2n - 1
B) an = 2 • -4n + 1
C) an = 2 • -4n
D) an = -4 • 2n

Answers

Answer:

An explicit rule for the nth term of the sequence will be:

[tex]a_n=-4\cdot \:2^{n-1}[/tex]      

Thus, option (A) is true.

Step-by-step explanation:

Given the sequence

[tex]-4, -8, -16, -32, ...[/tex]

A geometric sequence has a constant ratio r and is defined by

[tex]a_n=a_0\cdot r^{n-1}[/tex]

Computing the ratios of all the adjacent terms

[tex]\frac{-8}{-4}=2,\:\quad \frac{-16}{-8}=2,\:\quad \frac{-32}{-16}=2[/tex]

As the ratio 'r' is the same.

so

[tex]r=2[/tex]

as

[tex]a_1=-4[/tex]

Hence, the nth term of the sequence will be:

[tex]a_n=a_0\cdot r^{n-1}[/tex]

substituting the values [tex]r=2[/tex] and [tex]a_1=-4[/tex]

[tex]a_n=-4\cdot \:2^{n-1}[/tex]      

Therefore, an explicit rule for the nth term of the sequence will be:

[tex]a_n=-4\cdot \:2^{n-1}[/tex]      

Thus, option (A) is true.

Help!!!!Find the slope of the line on the graph.
Write your answer as a fraction or a whole
number, not a mixed number or decimal.
Enter the correct answer.

Answers

Answer:

[tex]m=\frac{-1}{2}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (0, -4)

Point (-8, 0)

Step 2: Find slope m

Substitute:                    [tex]m=\frac{0+4}{-8-0}[/tex]Add/Subtract:               [tex]m=\frac{4}{-8}[/tex]Simplify:                        [tex]m=\frac{-1}{2}[/tex]

gordon types 1800 words in 25 minutes. word per minute

Answers

Answer:

72

Step-by-step explanation:

words per minutes= 1800÷25=72

Evaluate the expression 2(n + 1) - 5 using n=4

Answers

Answer:

5

Step-by-step explanation:

2(4+1)-5

2(5)-5

10-5

5

SUPER EASY AND ILL GIVE BRAINLIEST

determine which of the following are functions
a. I and III only
b. II and IV only
c. II, III, and IV only
d. I, II, III and IV

Answers

Answer:

I and III only

Step-by-step explanation:

Answer:

2 and 5

Step-by-step explanation:

Make sure you use the vertical line to determine what is a function

Isabella pitches for her high school softball team. Of the 7 pitches she throws, 5 are strikes. She uses a standard deck of cards to model her pitches, with hearts, clubs, and spades representing strikes. Which statement about her model is true?
A- Her model can be improved the most by removing all the face cards from the deck. B-Her model cannot be improved. C-Her model can be improved the most by removing all the aces from the deck. D-Her model can be improved the most by removing the queens and kings of hearts, clubs, and spades.

Answers

Answer:

B. Her model cannot be improved.

Step-by-step explanation:

We make this conclusion because it seems Isabella's model isn't actually proffering any solution to increase/reduce the number of strikes she has had.

Hence, any changes made do not clearly seem to improve the present model she is using.

Answer:

The correct answer is D!

Step-by-step explanation:

What do variables and function have in common

Answers

A function is a mathematical relationship in which the values of a single dependent variable are determined by the values of one or more independent variables. Function means the dependent variable is determined by the independent variable(s)

The LA Dogers hit the most home runs in 2014. The number of home runs accounted for 6% of the entire major league Baseball home run count.If 583 total home runs were hit, then how many did the LA Dogers hit

Answers

Given:

Total number of home runs = 583

Home runs hit by LA Dogerse = 6% of the total home runs

To find:

The number of home runs hit by LA Dogers.

Solution:

We have,

Home runs hit by LA Dogerse = 6% of the total home runs

                               [tex]=\dfrac{6}{100}\times 583[/tex]

                               [tex]=\dfrac{3498}{100}[/tex]

                               [tex]=34.98[/tex]

                               [tex]\approx 35[/tex]

Therefore, LA Dogerse hits about 35 home runs.                            

s = ut + 1/2at squared
u = 10 a = -2 t = 1/2

Answers

Answer: 4.75

with u = 10, a = -2, t = 1/2

=> [tex]s=10.\frac{1}{2}+\frac{1}{2}. \frac{(-2).1}{4}=5-\frac{1}{4}=\frac{19}{4}=4.75[/tex]

Step-by-step explanation:

whoever hears this I want u to know that I am here for I will always be be and so will God. Things well get better I promise!! YOU have to go through the storm to get to the rainbow. TURN TO GOD he will always help u and he loves you and I do to and so does Jesus u got this. DONT GIVE UP and keep on pushing at the end it will all be worth it I promise AND GIVE YOUR LIFE TO JESUS he will help you

Answers

Answer:

im gay tho :)

Step-by-step explanation:

Answer:

atheists reading this :0

Step-by-step explanation:

this was a joke plz dont bully me

if kevin took 1/10 of an hour to use 1/2 of package of napkins. how many hours would it take to use 2 packages?

Answers

Answer:

2/5 hours

Step-by-step explanation:

We can write a proportion to solve

1/10 hour          x hours

----------------   = -------------------

1/2 package        2 packages

Using cross products

1/10 * 2 = 1/2 x

1/5 = 1/2x

Multiply each side by 2

1/5 * 2 = 1/2x *2

2/5  =x

2/5 hours

Find the mean proportional for each pair. SHOW YOUR SOLUTION

1. 6, 24

Answers

Answer:

The mean proportional of 6, and 24 will be 12

Step-by-step explanation:

We know that the Mean proportional of two

numbers, x, and y :  [tex]\sqrt{xy}[/tex]

Therefore, the mean proportional of 6, and 24

[tex]=\sqrt{6\times 24}[/tex]

[tex]=\sqrt{144}[/tex]

[tex]\mathrm{Factor\:the\:number:\:}\:144=12^2[/tex]

[tex]=\sqrt{12^2}[/tex]

[tex]\mathrm{Apply\:radical\:rule}:\quad \sqrt[n]{a^n}=a[/tex]

[tex]\sqrt{12^2}=12[/tex]

[tex]=12[/tex]

Therefore, the mean proportional of 6, and 24 will be 12.

The graph below represents the following system of inequalities.
y > 2x + 1
x ≤ 0

Which set of ordered pairs satisfy the given system of inequalities?

A. {(-3,-2), (-2,-1), (-1,3)}
B. {(-1,3), (-2,-5), (4,-8)}
C. {(-3,-2), (-2,1), (-4,-8)}
D. {(-1,-3), (-2,-5), (-4,-8)}

Answers

Answer:

its D jus got it right!!!

Step-by-step explanation:

D. {(-1,-3), (-2,-5), (-4,-8)}

A car wheel has a diameter of 20.8 inches.

About how far does the car wheel travel in 1 rotation? 5 rotation? 30 rotations?

Answers

Answer:

65.312 inches326.56 inches1959.36 inches

Step-by-step explanation:

Givend = 20.8 inchesTo findTravel in 1, 5, 30 rotationsSolution

Circumference of the wheel is equal to one full rotation

C = πd = 3.14*20.8 = 65.312 inches5C = 5*65.312 = 326.56 inches30C = 30*65.312 = 1959.36 inches

Answer:

1 rotation: 65.312 inches

5 rotations: 326.56 inches

30 rotations: 1959.36 inches

Circumference = π and diameter

3.14 x 20.8 = 65.312 inches

5C = 5 x 65.312 = 326.56 inches

30C = 30 x 65.312 = 1959.36 inches

During Saturday’s game the football team gained 87 yards rushing and 213 yards passing how many more yards were gained passing than rushing.

Define a variable,write an equation, then solve.

Answers

the answer is 126 hope it helps

The equation would be x + 87 = 213

FOR 30 POINTS
Which of the following is equivalent to 7.4 kilograms?
74,000 cg
74 hg
740 g
740,000 mg

Answers

Answer:

i belive the answer is 740,000 mg

A scientist measures the temperature of a chemical solution. At the start of the experiment, the solution is at a temperature of -14.06*C. TH decreases 2.9°C each hour. What is the temperature of the solution after 3 hours, rounded to the nearest whole degree?​

Answers

Answer:

T(3) = -23°C

Step-by-step explanation:

Constant Rate of Change

Given an initial condition of a variable T, To and a constant rate of change m, it's possible to write a model to predict the value of T in time t:

[tex]T(t)=T_o+mt[/tex]

The initial temperature the scientist measures of a chemical solution is To=-14.06°C.

It's known the temperature decreases at a constant rate of -2.9°C each hour, thus the model is:

[tex]T(t)=-14.06-2.9t[/tex]

Evaluating at t=3 hours:

[tex]T(3)=-14.06-2.9\cdot 3[/tex]

[tex]T(3)=-14.06-8.7[/tex]

T(3) = -22.76°C

Rounding to the nearest whole degree:

T(3) = -23°C

1. Multiply using distributive property.
(4x - 2)(x - 3)


Please help me answer.

Answers

Answer: 4x-6

Step-by-step explanation: Combine like terms. 4x*x is 4x and -2*-3 is -6. That is how you find the answer.

Answer:

4x²-14x+6

Step-by-step explanation:

(4x · x - 4x ·3 - 2·x + 6) = 4x²-14x+6

I need HELPPPPP!!!!!!

Answers

Answer:

light blue

Step-by-step explanation:

3. Which property of multiplication is shown by the equation
14.y.1 = 14y?
A. Associative
C. Commutative
B. Distributive
D. Identity

Answers

Answer:

identity

Step-by-step explanation:

it states that any number times 1 is equal to itself. so when u have 14y, you can multiply it by 1 and it will remain the same.

Answer:

identity

Step-by-step explanation:

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