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stich3 [128]
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.
Mathematics
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 :)
5 0
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 
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7 0
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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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
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