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Mamont248 [21]
3 years ago
15

So, which one is the answer? ​

Mathematics
2 answers:
Murrr4er [49]3 years ago
7 0
It is cm*cm*cm so you get cm^3
Flauer [41]3 years ago
6 0
2272in^3 because volume is always measured in ^3
You might be interested in
HELP PLEASE BE QUICK
natka813 [3]

Answer:

Part 7) AB=27\ units

Part 8) x=1.7\ units

Step-by-step explanation:

Part 7) Find the length of AB

we know that

The<u><em> two tangent theorem</em></u> states that if we draw two lines from the same point which lies outside a circle, such that both lines are tangent to the circle, then their lengths are the same

so

In this problem, applying the two tangent theorem

AB=BC

substitute the given values

15x-3=10x+7

solve for x

15x-10x=7+3\\5x=10\\x=2

Find the length of AB

AB=15x-3

substitute the value of x

AB=15(2)-3=27\ units

Part 8) we know that

If CD is tangent to circle E at point C

then

Line segment CD is perpendicular to line segment EC (radius) and CDE is a right triangle

so

Applying the Pythagorean Theorem in the right triangle CDE

DE^2=CD^2+EC^2

substitute the given values

2^2=x^2+1^2

solve for x

4=x^2+1\\x^2=3\\x=1.7\ units

6 0
3 years ago
Tell which property is represented 8•12•5=8•(12•5)
Gennadij [26K]

Answer:

Associative property

Step-by-step explanation:

Associative property allows you to put parenthesis in a part of the equation. We can only apply associative property on a part with multiplication or addition. If you do it with at an equation with subtraction or division you can change the result and make calculation mistake.

In this question, all of the operation used is multiplication. The result won't change even if you put parenthesis, both will give result of 480

3 0
3 years ago
The fracture strength of tempered glass averages 14 (measured in thousands of pounds per square inch) and has standard deviation
Wewaii [24]

Answer:

0.1587 = 15.87% probability that the average fracture strength of 100 randomly selected pieces of this glass exceeds 14.2.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

The fracture strength of tempered glass averages 14 (measured in thousands of pounds per square inch) and has standard deviation 2.

This means that \mu = 14, \sigma = 2

Sample of 100:

This means that n = 100, s = \frac{2}{\sqrt{100}} = 0.2

What is the probability that the average fracture strength of 100 randomly selected pieces of this glass exceeds 14.2?

This is 1 subtracted by the p-value of Z when X = 14.2. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{14.2 - 14}{0.2}

Z = 1

Z = 1 has a p-value of 0.8413.

1 - 0.8413 = 0.1587

0.1587 = 15.87% probability that the average fracture strength of 100 randomly selected pieces of this glass exceeds 14.2.

6 0
3 years ago
9. At soccer practice, Joan kicked the ball 22 feet. This was 3 feet shorter than Joe kicked the ball. Write and solve a subtrac
mote1985 [20]
X-22=3
x=25.
joe kicked the ball 25 feet
4 0
3 years ago
a soccer team won 6 games out 10 total game if they played 25 total games how many games did they win
Lana71 [14]
Okay, so if with 10 games, they win 6, they would win 12 with 20. To find the 5, you would find half of 6 (since half of 10 is 5). Half of 6 is three. 3 plus 12 is 15. They would win 15 games. 
8 0
3 years ago
Read 2 more answers
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