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3 years ago

Subtracting a number is the same as adding its opposite.

Mathematics

1 answer:

allsm [11]3 years ago

3 0

Answer:

-6 - 13 is the same as -6 + - 13 which equals -19

-6 - (-13) is the same as -6 + 13 which equals 7

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An above-ground swimming pool in the shape of a cylinder has a diameter of 18 feet and a height of 4.5 feet.If the pool is fille

steposvetlana [31]

Answer:

The volume of the water in the pool is 1,017 cubic feet

Step-by-step explanation:

we know that

The volume of a cylinder is equal to

$V=\pi r^{2} h$

we have

$r=18/2=9\ ft$ ----> the radius is half the diameter

Remember that

$1\ ft=12\ in$

$6\ in=6/12=0.5\ ft$

To find out the height of the water, subtract 0.5 feet from the height of the swimming pool

$h=4.5-0.5=4\ ft$

assume

$\pi =3.14$

Find the volume of the water

$V=(3.14)(9^{2})(4)$

$V=1,017\ ft^3$

5 0

3 years ago

A number and its absolute value are equal. If you subtract two from the number, the new number and its absolute value are not eq

r-ruslan [8.4K]

A number and its absolute value are not equal when the number is less than zero. Since subtracting 2 makes the number less than zero, we know ...

... the number is a non-negative number less than 2. (0 ≤ n < 2)

5 0

3 years ago

The measure of <1 = 20x + 21 and the measure of <2 = 30x - 29.

geniusboy [140]

Answer:

Both equal 121 degrees

Step-by-step explanation:

Vertical angles are equal, and and 2 are indeed vertical angles. They are the "top" and "bottom" of the x formed. So you can use this.

angle 1 = angle 2

20x + 21 = 30x - 29

50 = 10x

5 = x

So just plug this in.

20x + 21

20(5) + 21

121

30x - 29

30(5) - 29

121

So both are 121.

8 0

3 years ago

In ΔTUV, t = 6.6 inches, ∠U=71° and ∠V=36°. Find the length of u, to the nearest 10th of an inch.

natali 33 [55]

Answer:

Step-by-step explanation:

5 0

3 years ago

Complete the table below for the function y = 5x - 2.

Jlenok [28]

Answer:

8, 18, 23, 43

Step-by-step explanation:

x = 2 => y = 8

x = 4 => y = 18

x = 5 => y = 23

x = 9 => y = 43

6 0

3 years ago