MATHEMATICS MIDDLE SCHOOL

X=7y-9
X+7y=8

Need help using substitution. ?! Please

Answers

Answer 1
Answer: X=7y-9
X=-7y+8
7y-9=-7y+8
+9= +9
7y=-7y+17
+7y=+7y
14y=17
14y/14=17/14
Y=17/14

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Oh: 10x + 10 < 30Whats the graph
I need help with this one please help

Please help me ergent ):

Answers

what do you need help with

Jan buys 12 pens for 10$. Each pen costs the same amount of money. Write a proportion to find the number of pens Jan can buy $15. Then solve your proportion for the number of pens.

Answers

You can write the proportion as 2 equal fractions or as two equal ratios.
(12)/(10) = (x)/(15)   or   12 pens:$10 = x pens:$15

You can buy x pens for 15 dollars. One way to find x is by cross multiplying the fractions.

10x=12×15
10x=180
-----  -----
10    10 
x=18

You can buy 18 pens for $15.

Find the area pls pls pls

Answers

First spilt the shape into two smaller shapes to get a rectangle and a parallelogram use the area of a rectangle formula to get an area of 15 units for the rectangle and the use the parallelogram formula to get 15 units the. Add the area of both shapes to get 30 units

What is 12 divided by 3/4

Answers

12 divided by 3/4 =
16

It is 16 because the reciprocal of 3/4 is 4/3 and 12 as a fraction is 12/1. So 12/1 x 4/3 is 48/3. And if you divide 48 by 3 you will get 16. If you don't get 16 then you did the wrong calculation.

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it would be 16 as your answer

NEED ASAP..Will mark you brainliest...Please match the words to the definition...I have given it a try, but something I am matching is wrong

Answers

Answer:

gcfdbea

Step-by-step explanation:  

I believe these are the correct answers.

An unknown number is not equal to 4.98 but rounds to 4.98 when rounded to the nearest hundredth. Which of the following could be the unknown number?

Answers

Answer:

4.979

Step-by-step explanation:

Answer:

4.975- 4.979

Step-by-step explanation:
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