3 years ago

The diagram below shows a sandbox and the frame that

Mathematics

1 answer:

Mashutka [201]3 years ago

3 0

Answer:

8x+16 ft^2

Step-by-step explanation:

First we find the total area of the large rectangle

A = l*w

A = (x+3) * (x+5)

FOIL

A = x^2 +5x+3x+15

A = x^2 +8x+15

Now we find the area of the inner rectangle

A = lw

A = (x+1) (x-1)

FOIL

A = x^2 -x+x -1

A = x^2 -1

To find the shaded area, take the large rectangle and subtract the small rectangle

x^2 +8x+15 - (x^2 -1)

Distribute the minus sign

x^2 +8x+15 - x^2 +1

Combine like terms

8x+16

You might be interested in

Given the system

ludmilkaskok [199]

You add 6 in each side to get the 4 which means x is the equal to 4

5 0

2 years ago

Polly bought a cracker for $7 and then bought a parrot for $2. By how much did Polly's account change after her transactions?

marysya [2.9K]

Answer:

$Changes = -\$9$

Step-by-step explanation:

Given

$Cracker = \$7$

$Parrot = \$2$

Required

Determine the changes in the account

First, we need to determine the total amount spent;

$Total = Cracker + Parrot$

$Total = \$7 + \$2$

$Total = \$9$

Hence, the changes in her account is a debit of $9 i.e. -$9

7 0

3 years ago

I plan to sell lemonade. If I spend $15 on products and then plan on selling glasses for $2 each, how many glasses do I need to

Helga [31]

8 glasses in order to make money because if you sell each glass for $2 times that by 8 it’s $16

3 0

3 years ago

Which of the following integers is a perfect square? A 36 B 48 C 44 D 32

Anika [276]

Answer:

Step-by-step explanation:

since 36=6² and the other option is not square of integer

5 0

3 years ago

Read 2 more answers

A telecommunication company has 7 satellites, two of which are sending a week signal. If two are picked at random without replac

Setler [38]

2/7 is the probability that the first satellite sends a weak signal. That leaves 6, one of which sends a weak signal. So the probability that the second also sends a weak signal is 1/6. Combine these and we get 2/7×1/6=1/21.

5 0

3 years ago