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Ghella [55]
3 years ago
15

Which expression is equivalent to 7h^2-252k^2?

Mathematics
2 answers:
mars1129 [50]3 years ago
8 0

Answer:

cccccccccccccccc

Step-by-step explanation:

gulaghasi [49]3 years ago
6 0

Answer:

c

Step-by-step explanation:

252 = 7 *36

36 = 6 *6 = 6²

a² -b²  = (a + b)(a - b)

7h² - 252k² =  7(h² - 36k²)

                   = 7(h² - [6k]² )

                  = 7(h  +6k)(h - 6k)

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The sides of a rectangle are in the ratio 2:5. The perimeter of the rectangle is 70 cm. What is the width of the rectangle?
EleoNora [17]

Width = 10cm

Length = 25cm

<u>Explanation: </u>

Given, width:length = 2:5

Let width = 2x ,

So, length = 5x

Perimeter of rectangle = 2x(length + width)

According to the question,

70cm = 2X(5x + 2x)\\70cm = 2X(7x)\\35cm = 7x\\x = 5cm

Hence,

Width = 10cm

Length = 25cm

4 0
3 years ago
Identify the independent and dependent variables. Then use the information to determine how many gallons of gas are left after t
lesya692 [45]

Answer:

Independent: miles travelled

Dependent: gallons of gas

Gas remaining after 68 miles: 7.2 gallons

Step-by-step explanation:

Looking at the table, it appears that after every 17 miles of driving, 1 gallon of gas is used.

  • 68 miles would be the next 17 miles after driving 51 miles
  • this means another gallon of gas would be used, so 8.2 - 1 = 7.2 gallons left

The <u>dependent variable</u> is the variable that depends on that of another

  • In this case, the dependent variable is the gallons of gas, because in order for the car to drive, it needs gas

The <u>independent variable</u> is the variable that does not depend on that of another

  • In this case, the independent variable is the miles travelled
3 0
3 years ago
Please help!!! I will give five stars and points for correct answers with a explanation.
jok3333 [9.3K]

Answer:

p-m x n

Step-by-step explanation:

correct

3 0
3 years ago
Write a congruence statement for the pair of triangles. Name the postulate it theorem that justifies your statement.
mezya [45]

Answer:

B

Step-by-step explanation:

4 0
3 years ago
Easy Work! Please look at the picture and yes it’s easy for other people but not for me for people asking please and thank you.
taurus [48]
The formula is area= 1/2bh
So your gonna multiple 1/2 to your base then multiple your height for number one it would go like this



1/2 • b(22) =11 • h(3) which is 33 hope this helps
6 0
3 years ago
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