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Mariulka [41]
3 years ago
8

What are letters A, B, and C?

Mathematics
1 answer:
uranmaximum [27]3 years ago
6 0

Answer:

a. (3-7x) + (3-7x) + (3-7x) + (3-7x)

b. 4(3-7x)

c. 12 - 28x

Step-by-step explanation:

To find the perimeter of a square, you need to add up all the sides

a. Since a square has all equal sides you will need to write the expression four times: (3-7x) + (3-7x) + (3-7x) + (3-7x) = perimeter

b. Expressing this as a product, we can condense the formula to 4 multiplied by the expression since it is written four times: 4(3-7x) = perimeter

c. Using the distributive property, we can write the product 4(3-7x) from b. as: (4)(3) + (4)(-7x) = 12 + (-28x) = 12 - 28x = perimeter

You might be interested in
Use the original price and the markup to find the retail price.
Ber [7]

Answer:

$45.15

Step-by-step explanation:

When you are dealing with questions with percents in them—like this one—you have to turn the percent into a decimal. To make 7.5% into a decimal, you move the decimal point 2 spaces to the left. So, 7.5% is also 0.075.

Now, we have to use this formula for these types of questions:

x + x(y)= the price with tax (or markup)

So, we can substitute the variables.

42+42(0.075)=the retail price

42(0.075)=3.15

42+3.15=45.15

So, the retail price will be $45.15

5 0
3 years ago
Mhanifa can you please help this is due asap
sleet_krkn [62]

Answer:

<h3>Question 1 </h3>
  • <em>Adjacent angles are supplementary, opposite angles are equal</em>

<u>Find x</u>

  • 62 + 5x + 3 = 180
  • 5x = 180 - 65
  • 5x = 115
  • x = 23

<u>Find y</u>

  • 62 = 3y + 2
  • 3y = 60
  • y = 20
<h3>Question 2</h3>
  • <em>Diagonals bisect each other</em>

<u>Find x</u>

  • 4x = 3x + 7
  • x = 7

<u>Find y</u>

  • 6y = 2y + 16
  • 4y = 16
  • y = 4

Correct choice is A

6 0
3 years ago
What is the answer for -5x-4=?
slamgirl [31]
If you want to solve for x
-5x-4=?
add 4 to both sides
-5x=4+?
divide both sides by -5
x=(4+?)/-5
x=-(4+?)/5
3 0
3 years ago
Read 2 more answers
Please help! I’ll also give brainliest! Thank you!
navik [9.2K]

Answer: Union of two sets.

Explanation: "An element is in the union of two sets if it is in the first set, the second set, or both. The symbol we use for the union is  ∪ . The word that you will often see that indicates a union is "or".

Your Welcome :-)

4 0
3 years ago
Select the best answer for the question.
wel
The answer should be B idk really
7 0
3 years ago
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