MATHEMATICS MIDDLE SCHOOL

Can someone solve these for me
1. 4x + 2 = -10

2. 7x + 12 = -9
​

Answers

Answer 1
Answer:

Answer:

1. x = -3

2. x = -3

Step-by-step explanation:

1.

First subtract 2.

4x = -12

Divide by 4.

x = -3

2.

Subtract 12 from both sides.

7x = -21

Divide by 7

x = -3
Answer 2
Answer:

Answer:

1. -3

2. -3

Step-by-step explanation:

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Write a sentence describing a situation that could be represented by the equation 4 divided by 1 1.3 = ?

Answers

Answer: The answer would be like this. I have 11.3 dollars. I want to split it with my four friends. what would the cost of each friend have.

Step-by-step explanation:
You could write a sentence that involves 11.3, the whole number 4, and the operation, dividing. EXAMPLE ; I have 4 apples. I want to divide all of them in 11.3 tenths equally. What is my answer?

#3 heeeeelp pliz
number 3!

Answers

a) 8+3=11, 11-8=3, 11-3=8
b) 7-4=3, 3+4=7, 4+3=7
c) 5+19=24, 24-19=5, 24-5=19
Hope it helped!

12a+9b=k (2a+3/2b) Which value of k makes the equation true?

1) 6
2) 2
3) 3
4) 4

Answers

12a+9b=k (2a+3/2b)

Which value of k makes the equation true?

1) 6

Answer: \n 12a + 9b = k(2a + (3)/(2) b) \n \Leftrightarrow 6(2a + (3)/(2) b) = k(2a + (3)/(2) b) \n \Leftrightarrow k = 6 \n

rachel received a $70 gift card for a coffee store. she used it in buying some coffee that cost $7.44 per pound. after buying the coffee, she had $25.36 left on her card. how many pounds of coffee did she buy?

Answers

Answer:

6 pounds.

Step-by-step explanation:

70-25.36= 44.64 (the amount of money she spent)

44.64/7.44 (per pound cost)= 6

Answer:

Rachel bought 6 pounds of coffee.

Step-by-step explanation:

First, do $70-$25.36, because that will give you the total amount of money she spent on coffee.

$70-$25.36= $44.64.

Rachel spent $44.64 on coffee.

Next, you know that every pound of coffee costs $7.44.

So, $7.44x = $44.64

x= the number of pounds of coffee Rachel purchased.

So, we have to now isolate x.

$7.44x / $7.44 = $44.64 / $7.44

x= 6

Therefore, Rachel purchased 6 pounds of coffee.

If you need anymore help on any math problems, email me at: [email protected]

I also tutor.

Hope this helps:)

The area of a wall mural is 299 square feet. The height of the mural is 13feet. What is the length of the mural?

Answers

length x width = area
______________________
13 x ? = 299
299 ÷ 13 = 23
________________
Length = 23 feet
the length would be 23 
because you divide 299 into 13 to find what the other lengths would be and you get 23
to check that you do 23*13 and get 299

How to find out how many cubes it takes? Can someone explain to me how to do the how many cubes does it take thing?Example: 
Kayla stacked her cubes to make this rectangular prism. 


How many cubes did Kayla use? 

Answers

In this case, you simply count how many cubes are in the length, width, and height and multiply them together. In the example problem, the answer is 75 blocks because the dimensions are 5 x 5 x 3.
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