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3 years ago

mark is 11 years older than his sister. In 8 years he will be twice as old as she will be then. How old are they now

Mathematics

1 answer:

Whitepunk [10]3 years ago

8 0

Answer: 14 years old and his sister is 3 years old

Step-by-step explanation:

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What is 20/10 as a whole number

Papessa [141]

Answer:

Step-by-step explanation:

1. 20/10

2. divide numerator and denominator by 10

2. 2/1 = 2

4 0

3 years ago

Read 2 more answers

If you own 3 traditional IRAs and you are 58 years old, your combined pre-tax contributions may be____.

amm1812

1/2 would be the answer

5 0

3 years ago

Find the hypotenuse, , of the triangle

Irina18 [472]

Answer:

hypoténuse = 15 in

b ² = 15² - 9²

b ² = 144

b = √144 = 12

Perimeter = 15 + 9 + 12 = 36 inches

Step-by-step explanation:

5 0

2 years ago

Your friend incorrectly factors the expression 15x — 20xy as 5x(3— 4xy

nika2105 [10]

Answer:

no 15x — 20xy as 5x(3— 4xy is not correct

Step-by-step explanation:

15x — 20xy ≠ 5x(3— 4xy)

there are not equal because 5x(3 - 4xy) =

when you simplify the bracket, you will have

15x - 20x²y

6 0

3 years ago

Question #7

Sever21 [200]

Answer:

The area is 56.7 square inches

Step-by-step explanation:

Given

See attachment for corner shelf

Required

The area

The corner shelf is a quadrant with radius;

$r = 8.5in$

The area of a quadrant is:

$Area = \frac{\pi r^2}{4}$

So, the area of the corner shelf is:

$Area = \frac{\pi * 8.5^2}{4}$

$Area = \frac{\pi * 72.25}{4}$

$Area = \pi * 18.0625$

Take $\pi$ as 3.14

$Area = 3.14 * 18.0625$

$Area = 56.7$ -- approximated

7 0

2 years ago