Mathematics Middle School

For this linear equation, give the number by which you would multiply the terms in each equation in order to eliminate one of the variables. Then solve this system:
5x+2y=-1; 3x+7y=11

This would be a big help if you also include the process to help me understand the answer!

Answers

Answer 1

Answer:

Step-by-step explanation:

The solution to this system of linear equations 3x – 2y = 14 and 5x + y = 32 is (x, y) is (6, 2).

Answer 2

Answer:

Step-by-step explanation:

If we choose to eliminate x, multiply the first equation by -3:  -15x - 6y = 3

and multiply the second by 5:  -15x - 35y = 55

Note that this allows us to eliminate x.  We get:

-6y = 3

-35y = 55

which sum up to -41y = 58.  Thus, y = -58/4.

Related Questions

3/5x-4(1/8w)
simplify the Q on the top pls

Answers

Answer:

3/4 x -1

Step-by-step explanation:

sana makatulong

Answer:

3/5x - 4(1/8w) = 3/5x - 4(1/8)w = 3/5x - 1/2w

help help help help pls pls help pls

Answers

Answer:c

Step-by-step explanation:

Decide the numbers

Answer c, 11 1/4
Hope the photo helps

Solve.

p/ 1 3/7 = −10.2

Enter your answer as a mixed number in simplest form.

Answers

answer: p=-530 2/5

ex:

The mixed number is  [tex]-14 \frac{4}{7}[/tex]

What are Mixed Numbers?

A mixed number is a whole number, and a proper fraction represented together. A mixed number is formed by combining three parts: a whole number, a numerator, and a denominator. The numerator and denominator are part of the proper fraction that makes the mixed number.  

Given data ,

[tex]\frac{p}{1\frac{3}{7} } = -10.2[/tex]

To solve for p ,

Multiply by  [tex]1\frac{3}{7}[/tex]  on both sides we get ,

p = [tex]-10.2[/tex] × [tex]1\frac{3}{7}[/tex]

Now , [tex]1\frac{3}{7}[/tex]  can be written as the improper fraction form as  [tex]\frac{10}{7}[/tex]

So ,

p =  [tex]-10.2[/tex] × [tex]\frac{10}{7}[/tex]

p =  [tex]\frac{-102}{7}[/tex]

Now , the improper fraction [tex]\frac{-102}{7}[/tex]  can be represented by the mixed number as  [tex]-14 \frac{4}{7}[/tex]

Hence , The mixed number is  [tex]-14 \frac{4}{7}[/tex]

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The price of an item has been reduced by 35%. The original price was $60. What is the price of the item now

Answers

Answer:

Step-by-step explanation:

$60=100%

A 35% reduction is the same as multiplying by 0.65(1-0.35).

$60*0.65=$39

hi!!

100%=60
10%=6
(6x3) 30%=18
(6÷2)5%=3
(18+3)35%=21

60-21= $39

Find the Surface Area of the composite figure.

Write with the correct unit of measurement, such as 5 cm^2.

Answers

Answer: I think its 64

Step-by-step explanation:

First I split the shapes into 2 then I did one side is 4x6=24 and then I did 8x5 which is the second shape, and is 40 so then I just add hope I got it right if I got it wrong then shame on me.

64 hope this helps :)

Help I’m giving brainlyest

Answers

Answer:

I think it's A. The one that you chose is correct.

Step-by-step explanation:

Solve.

w−(−2/3)=1.06

Enter your answer as a fraction in simplest form in the box.

Answers

Answer:

-(-2/3)

i believe that is correct if not please lmk.

A=1.727 im sure that’s it

14. Could the side lengths below form a right
triangle? Explain.
5, 7.5,2.5

Answers

Answer:

Pythagorean theorem says no

Step-by-step explanation:

Pythagorean theorem says no

how do -11.5 and -9.5 compare? choose the correct symbol.
a: <
b: >
c: =

Answers

Answer:

-11.5 < -9.5

Step-by-step explanation:

The larger the negative number, the less value. So when you compare -11.5 to -9.5, -9.5 is larger in value.

-9.5 is larger because -9.5 is closer to zero which is the midpoint in the number line. And -11.5 is away from 0 so, -9.5 is bigger

brain test, pick the biggest number

506+798
876-708
904x604

Answers

Answer:

1 1304

2 168

3 546016 is the answer

The answer is C because your multiplying bigger number

HELPPPPPPPPPPPPPP MEEEEEEEEEEEEEE

Answers

Answer:

Question A: A

Question B: C

Question C: B

Step-by-step explanation:

c, is c. they have already concluded data. the older the age, the shorter the stay. that’s the end conclusion.

0.9 is the result of finding the product of 2 and 3/4 minus a number.

What is the number?


3/40

3/10

33/40

1 1/5

Answers

Answer:

K12 Answer

Step-by-step explanation:

The unknown number will be equal to 3 / 5. The correct option is B.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that 0.9 is the result of finding the product of 2 and 3/4 minus a number.

The unknown number will be calculated as,

( 2 x 3) / 4 - N = 0.9

N = (3 / 2) - ( 9/10)

N = ( 15 - 9 ) / 10

N = 6 / 10

N = 3 / 5

Therefore, the unknown number will be equal to 3 / 5. The correct option is C.

The correct options are given below,

A) 3/40

B) 3/5

C) 33/40

D) 1 1/5

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What property does this illustrate?

Answers

Answer:

Communitive property i think thats how you spell it

Step-by-step explanation:

What is the slope of a line that contains the points, (2x, y) and (x, 37)

Answers

Answer:

I think it's 1/2 but I haven't done a problem like this in awhile so I'm not sure

Use the formula (y2-y1)/(x2-x1) to get the answer, which would be y-37/x in this case

33 divided by -33 ___ --32 divided by 16

Answers

Answer:

33 divided by -33 > -32 divided by 16

Aaliyah wants to buy an air fryer from Target. The wholesale price is $85. Target wants to markup the price by 15%. How much more will Aaliyah pay for the air fryer?

Answers

Answer:

$97.75

Step-by-step explanation:

15% of 85

15/100 x 85 = 12.75

85 + 12.75 = 97.75

Answer:

$12.75 in mark-up tax

multiply $85 times the 15%

it should be $12.75 then add to $85 your answer will be

Aaliyah will pay $12.75 more for the air fryer.

Step-by-step explanation:

:D u welcome

In a lab, a substance was cooled by 20 C over a period of 10 hours at a constant rate. What was the change in temperature each hour?

Answers

Answer:

[tex]\frac{2 degrees}{1 hour}[/tex]

Step-by-step explanation:

So we have [tex]\frac{20degrees}{10hours}[/tex] we can simplify this into [tex]\frac{2 degrees}{1hour}[/tex]

helpppppppppp you will get 100 points

Answers

Answer:

3. 2 + 10x < 90

4. 5(9 + a) ≤ 29

5. x + 6 < 102

6. 6 + x > 102

7. 7x - 1 > 8x - 4

8.  Sorry. I don't know this one :(

9. 3x - 16

10. Sorry. I don't know this one :(

11. 10(x + 2) > 90

12. 66 ≤ x/7 + 7

13. Sorry. I don't know this one :(

14. 2x² + 5

15. x³ - 16

16. (x + 6)/2 ≥ -12

17. x/2 + 6 > -12

18. 9x - 4 < 5 + 3x

19. Sorry. I don't know this one :(

20. 9 + 5x ≤ 29

Step-by-step explanation:

Hoped this helped.

this looks very hard i hope someone helped you

DUE AT 8 MT!!! HELP ASAP!!!
Define a variable, set up an equation, then solve.
Sean and Evan are selling rolls of wrappign paper to raise money for new football uniforms. Evan has sold seven more than one-half the number of rolls that Sean has. If they have sold a total of 121 rolls, how many has Evan sold?
x - Rolls sold by Evan

Answers

Let x be the number of rolls sold by Sean.

We are given that Evan has sold 7 more that one-half the number of rolls that Sean sold.

Evan has sold 1/2x + 7 rolls.

Therefore, we have:

x + (0.5x + 7)  = 121

1.5x = 121 - 7

x = 114/1.5

x = 76

Answer:

This has already been solved by another question on brainly. I screenshoted it. Here it is

Step-by-step explanation:

With her new trainer, Judy now bikes at an average speed of 24.1 MPH. That is 20.5% faster than she averaged with her old trainer. How fast did she bike, on average, before training with the her new trainer?

Answers

Answer: an average of 13.5 mph is very respectable

Step-by-step explanation:

what is 2893834 x 5968675

Answers

Answer:

answer its....

Step-by-step explanation:

17272354649950

Which of the following numbers is between - 3/4 and 5/8 ?

Answers

Answer:

I believe that the answer is -1/2

Step-by-step explanation:

The number which falls under the inequality -3/4 < x < 5/8 is when x = -1/2

The correct answer is Option D.

Given data:

The number x is between -3/4 and 5/8.

So, the inequality is -3/4 < x < 5/8.

When comparing fractions, we consider their relative positions based on their magnitudes. Starting from the left, -3/4 represents a point closer to negative infinity, followed by -1/2, and then 5/8, which is closer to positive infinity.

Visually, imagine the number line where -3/4 is to the left, 5/8 is to the right, and -1/2 is positioned between them. Since -1/2 is greater than -3/4 and less than 5/8, it falls within the specified range. The choice -1/2 satisfies the condition and can be identified as the number between -3/4 and 5/8.

Hence, the number is x = -1/2.

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The complete question is attached below:

Which of the following numbers is between - 3/4 and 5/8 ?

A) -1

B) 7/8

C) 0.9

D) -1/2

write 5.437 in expanded form

Answers

5+0.4+0.03+0.007 is the answer

The expanded form of the given decimal number is 5+0.4+0.03+0.007.

What is expanded from of a decimal number?

Unlike whole numbers, decimal numbers can also be written in the expanded form. For writing the decimals in expanded form, we multiply each of the decimal digits with increasing exponent values of (1/10).

The given decimal is 5.437

Now, the expanded form is

5+4/10+3/100+7/1000

= 5+0.4+0.03+0.007

Therefore, the expanded form of the decimal 5.437 is 5+0.4+0.03+0.007.

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Need help with slope practice

Answers

Answer: C

Step-by-step explanation: It is C because the x values are going by 1s and the y values are going by 5s

c bc the x is increasing by ones, while the y is increasing by 5’s

Find
y
'
and then find the slope of the tangent line at
(
2
,
225
)
. Round the slope and y-intercept to 3 decimal place.

Answers

Since we are given the point, all we need to find is the slope to discover the tangent line.
To find the slope, you plug in 2 for y’ as it is the x-value of the point.

y’ = 2((2)^2+2(2)+7)(2(2)+2) = 180

Plug in the point and the slope in the point-slope formula

y - y1 = m(x - x1)

y - 225 = 180(x - 2)

Solve for y

y = 180x - 360 + 225

y = 180x - 135

PLZ HELP ME ANSWER THESE TWO QUESTIONS

Answers

Answer:

2. 18,000/90/20  

3. 54,000/90/60

Step-by-step explanation:

When you divide those you get 10 which can also be a factor.

A sporting goods store is having a clearance sale on many of their items. Complete the table by finding the missing values for the following items.



Item Original Price Discount Sale Price

Soccer Jersey $85.75 20% $68.60

Tennis Racket $94.00 55% ?

Answers

$51.70 55 percent of 94 is 51.7

Brendan uses his phone primarily to take a lot of selfies. The storage space on his phone is limited, so Brendan needs to keep track of how many selfies he takes.

There is a proportional relationship between the number of selfies Brendan takes, x, and the amount of storage (in megabytes) he uses taking selfies, y. Write an equation for the relationship between x and y. Simplify any fractions.

Answers

Answer 5/10
step by step explanation
hope this helps

Explain how to compare decimals. Use the numbers 6.75 and 6.732 to help you explain this process.

tysm I am struggling

Answers

Answer:

6.75>6.732  

Step-by-step explanation:

We are given that  

6.75 and 6.732  

We have to compare two given decimal numbers.  

First we convert like decimal number  

In 6.75 there are two digits after decimal point.  

In 6.732 , there are three digits after decimal point  

Therefore, we put zero in 6.75 to convert like decimal number

Now, we get  

6.750  

Unit place of both decimal numbers are same and tenth place of both decimal number are same.  

Now, hundredth place of 6.750 is 5 and hundredth place of 6.732 is 3  

5 >3

Therefore, 6.750 is greater than 6.732  

6.75>6.732

to compare these decimals, we first have to turn 6.75 into 6.750, so it has the same place value as 6.732. adding a 0 to the right side of the last digit in the decimal does not change its value. now, we compare them. 6=6, 7=7, 5≠3. since 5 is greater than 3, we know 6.75 is greater than 6.732. this can be written as 6.75>6.732.

Assignment: Give a detailed response to this prompt. Write MORE THAN 5 sentences. Make sure you are addressing the prompt and stay on topic.

PROMPT:
Your friend, Susannah, manages a sandwich shop. She collects data on the number of turkey sandwiches sold per day for a week. Explain to her how to find the mean, median, mode, and range of the number of turkey sandwiches sold. How that would be helpful when she orders new turkey sandwich makings? Which measure do you think would be the most helpful for her and why? ​
​

Answers

Answer:

Step-by-step explanation:

Firstly for the the mean you add all the numbers and divide by how many they are.73+88+85+88+99+134+129 and divide it by 7 .

Secondly for the median arrange the numbers numerical form and pick the middle number.

Mode is finding the most common number.

Range subtract the largest number from the smallest number.the best measure is mean because it shows you all you bought and helps in finding the perfect amount

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