All categories

3 years ago

Please help

Mathematics

1 answer:

rewona [7]3 years ago

5 0

Answer:

125.6m^2

Step-by-step explanation:

Let R be the greater radius and r be the smaller radius

Area of the sidewalk = R^2 - r^2 - This can be the expression

= 3.14

=(R^2-r^2)

=(11^2-9^2)

=(121-81)

= 40

= 3.14 x 40

You might be interested in

A submarine was situated 800 feet below sea level. If it ascends 350 feet, what is its

coldgirl [10]

Answer:

450 feet below sea level

5 0

3 years ago

HELP ASAP

AlekseyPX

We’ll subtract the exponent in the denominator from the exponent in the numerator, keeping the base the same. Cant be simplified, because the base of the expression in the numerator is y and the base of the expression in the denominator is x.

4 0

3 years ago

What is the solution to this equation?

padilas [110]

Answer:

x=3

Step-by-step explanation:

10-3x+8x=25

-10 -10

-3x+8x= 15

5x=15

5x/5=15/5

x=3

6 0

3 years ago

Add parentheses 10+9×3-1×2 equal greater than 75

vitfil [10]

(10 + 9) x (3 - 1) x 2 = +75
19 x 2 x 2
76
76 > 75

5 0

3 years ago

The table gives the average age of airplanes per airline at Camila’s local airport. By what percent is the number of airlines wi

VladimirAG [237]

The percentage that the number of airlines with an average airplane age of 14 is less than the number of airlines with an average airplane age of 11 is:

B. 20%.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

$P = \frac{a}{b} \times 100\%$

The percentage of airlines with an average age of 14 years is:

$P = \frac{2}{15} \times 100\% = 13.33\%$

The percentage of airlines with an average age of 11 years is:

$P = \frac{5}{15} \times 100\% = 33.33\%$

The difference is:

33.33% - 13.33% = 20%.

Hence option B is correct.

More can be learned about percentages at brainly.com/question/10491646

#SPJ1

6 0

2 years ago