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3 years ago

Which sets of numbers are closed under addition?

Mathematics

1 answer:

8_murik_8 [283]3 years ago

4 0

I would have to go with B as your answer

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Is (9, 90) a solution to the equation y = 10x? yes

Galina-37 [17]

Use the substitution method

(9,90) y= 10x

90= 10(9)

90= 90

Answer is yes

5 0

3 years ago

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Round 8 5/6 to the nearest whole number

kiruha [24]

Answer:

Step-by-step explanation:

8 5/6

5/6 is close to 1 so it will round up

8+1 = 9

8 5/6 rounds to 9

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2 years ago

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What is the volume of the cylinder below? Use 3.14 for pi.

neonofarm [45]

Answer:

about =502.65

Step-by-step explanation:

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2 years ago

"if calvin buys 4 pounds of starfruit and 3 pounds of oranges, how much is his total utility"

mel-nik [20]

He would have bought 7 pound
This is because you would add 4 and 3 together

Hope this helps!

8 0

3 years ago

A, B, and C are midpoints of ∆XYZ. What is the length of cy

iogann1982 [59]

Answer:

$XY=36\ units$

Step-by-step explanation:

The correct question is

A, B, and C are midpoints of ∆XYZ. What is the length of XY

we know that

The Midpoint Theorem states that the segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side

step 1

Find the length of YZ

$AB=\frac{1}{2}YZ$

we have

$AB=24\ units$

substitute

$24=\frac{1}{2}YZ$

solve for YZ

$YZ=48\ units$

step 2

Find the length of XY

Applying Pythagoras Theorem in the right triangle XYZ

$XZ^2=XY^2+YZ^2$

substitute the given values

$60^2=XY^2+48^2$

solve for XY

$3,600=XY^2+2,304$

$XY^2=3,600-2,304$

$XY^2=1,296$

$XY=36\ units$

Applying the Midpoint Theorem

$BC=\frac{1}{2}XY$ -----> $BC=\frac{1}{2}(36)=18\ units$

$AC=\frac{1}{2}XZ$ -----> $AC=\frac{1}{2}(60)=30\ units$

5 0

2 years ago