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2 years ago

10

a toy ball expands and contracts. When it is completely closed, it has a diameter of 15.5. Find the volume of the ball when it i

s completely closed. Round to the nearest cubic inch.

1 answer:

horrorfan [7]2 years ago

3 0

Volume of a sphere is 4/3pi∗r3. r is half the diameter.

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How is an isosceles trapezoid and a rhombus the same?

KATRIN_1 [288]

They are the same because they both have 4 sides

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3 years ago

Louann and Carla received equal scores on a test made up of multiple choice questions and an essay. Louann got 14 multiple choic

alexgriva [62]

Each multiple choice question would be 5 points. For Louann she got 14 of the questions correct so 5 x 14 = 70 and 70 + 24 would be 94. For Carla she got 16 of the questions correct so 5 x 16 = 80 and 80 + 14 = 94. You're answer would be 5, hopefully this helps :)

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3 years ago

Find two positive consecutive integers whose product is 132.

iren2701 [21]

If x is the first integer, then x+1 is the second. x(x+1)=132 or x^2+x-132=0. This factors as (x-11)(x+12)=0. Thus either x=11 or x=-12
<span>So either 11 and 12 or -12 and -11 will do.</span>

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3 years ago

The polygons are regular polygons. What is the area of the shaded region to the nearest tenth? (see attachment)

Fynjy0 [20]

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hope helped

8 0

3 years ago

Read 2 more answers

Carmen is a professor at a local university. In collecting data on her Introduction to Business course for a year, she wants to

AVprozaik [17]

Answer:

$\boxed {\boxed {\sf z=2.2}}$

Step-by-step explanation:

The z-score tells us how many standard deviations a value is away from the mean.

The formula is:

$z=\frac{x- \overline{x}}{s}$

where x is the value, $\overline {x}$ is the mean, and s is the standard deviation.

We want to find the z-score for the score of an 83, the mean is 72, and the standard deviation is 5.

$x=83 \\\overline {x}= 72 \\s=5$

Substitute the values into the formula.

$z=\frac{83-72}{5}$

Solve the numerator.

$z=\frac{11}{5}$

Divide.

$z=2.2$

The z-score is 2.2, which means the score of 83 is 2.2 standard deviations above the mean.

3 0

3 years ago