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professor190 [17]
3 years ago
14

8 times the difference of 2 and a number

Mathematics
2 answers:
Nataly [62]3 years ago
6 0
Difference of a number and 2:  (x - 2)   Eight times the difference of a number and 2:  8(x - 2)   The sum of the number and 3:  (x + 3)   Three times the sum of the number and 3:  3(x + 3)   Eight times the difference of a number and 2 is the same as 3 times the sum of the number and 3:   8(x - 2) = 3(x + 3)   Now just solve for x.   8x - 16 = 3x + 9   5x = 25   x = 5   The number is x = 5
ankoles [38]3 years ago
3 0
Hello There!

It would be 8(2-x)

Hope This Helps You!
Good Luck :) 

- Hannah ❤
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faust18 [17]

Answer: 47.1

Step-by-step explanation:

1/3πr^2h

=1/3×π×32×5

=15π

= 47.123889803847 feet3

4 0
2 years ago
Read 2 more answers
A set of test scores is normally distributed with a mean of 130 and a standard deviation of 30 What score is necessary to reach
nlexa [21]

Answer:

A score of 150.25 is necessary to reach the 75th percentile.

Step-by-step explanation:

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

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

A set of test scores is normally distributed with a mean of 130 and a standard deviation of 30.

This means that \mu = 130, \sigma = 30

What score is necessary to reach the 75th percentile?

This is X when Z has a pvalue of 0.75, so X when Z = 0.675.

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

0.675 = \frac{X - 130}{30}

X - 130 = 0.675*30

X = 150.25

A score of 150.25 is necessary to reach the 75th percentile.

7 0
3 years ago
Can someone help me with 1& 2 will mark brainiest
melamori03 [73]
Sin 45° = opposite side / hypotenuse

1/2 = 8/h
h = 16

2)6/12 = 1/2
1/2 = sin 45°

6√3/12 = √3/2
√3/2 = cos 30°

Sum of angles of triangle = 180°
The 3rd angle = 180 - (45 + 30) = 180 - 75 = 105°

Angles = 30° , 45° , 105°


7 0
3 years ago
PLEASE HELP ME!!!! WILL GIVE 5 STAR, THX, AND BRAINLIEST!!
Elis [28]
E fs ik that for a fact and maybe that’s all?
4 0
3 years ago
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5th grade math. Correct answer will be marked brainliest.
myrzilka [38]

Answer:

45.2 × 10⁰ = 45.2 (a⁰ = 1 )

45.2 × 10¹ = 452

45.2 × 10² = 4520

45.2 × 10³ = 45200

8 0
3 years ago
Read 2 more answers
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