4 years ago

Need help, please explain the answer

Mathematics

1 answer:

stellarik [79]4 years ago

7 0

Answer:

7 - x meters

Step-by-step explanation:

This is a difference of squares. The formula for difference of squares is

a^2-b^2 = (a-b)(a+b)

So plug the numbers we know into this formula.

Area = lw

49 - x^2 = (a-b)(7+x)

49 - x^2 = (7-x)(7+x)

<u>The length is 7 - x meters.</u>

You might be interested in

Help!!

eduard

Answer:

3.5m

Step-by-step explanation:

Multiply both values by 7 to find that 7in=3.5m

4 0

3 years ago

4. What are the next three numbers in this pattern? 7,4, 1, -2

Aleksandr [31]

Answer:

-5, -8, -11

Step-by-step explanation:

Common difference:

$d = 4 - 7 \\ d = - 3$

8 0

3 years ago

Read 2 more answers

How to simplify 7+(-8) )

FinnZ [79.3K]

It would be -56, just multiply as normal

8 0

3 years ago

Read 2 more answers

Three men working together can finish a house repair job in 10 days. How manydays will 5 men working at the same rate finish the

Vanyuwa [196]

Answer:

17 days

Step-by-step explanation:

Number of days in which 3 men can finish a house repair job = 10 days

Number of days in which 1 man can finish a house repair job = $\frac{10}{3}$ days

Therefore,

Number of days in which 5 men can finish a house repair job = Number of days in which 1 man can finish a house repair job × 5

$=\frac{10}{3}(5)=\frac{50}{3}=16.6$ ≈ 17 days

5 0

3 years ago

How to find the value of x in complementary angles?

strojnjashka [21]

Since complements of the same angle are congruent, we know that both angles are congruent, meaning they have the same measure. To find the value of X, set the two angles equal to each other and solve

5 0

3 years ago