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Vika [28.1K]
3 years ago
8

The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviatio

n of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches?a. 47.72%
b. 97.72%
c. 37.45%
d. 2.28%
e. 4.56%
Mathematics
1 answer:
FinnZ [79.3K]3 years ago
5 0
B. 97.72% hope this helps
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Rosemary is driving to Chicago, and she is 84 miles away. She wants to arrive in 1.5 hours. What rate of speed will she have to
vagabundo [1.1K]

Answer:

56 mph

Step-by-step explanation:

Process of elimination. 126 mph is much too high because it's more than the distance and they will arrive too early. 65 + 65 ÷ 2 = 97.5, that's more than 84 miles. The reason we divide by 2 is because of the .5. Now all we have is 56 mph. To check, 56 + 56 ÷ 2 = 84

4 0
2 years ago
My Homework Mr Thompson please help!!
Nady [450]

Answers:

  1. C) Factored form
  2. C) Standard form
  3. D) The y intercept is -8
  4. B) Two solutions: x = -5 or x = 5
  5. B) Apply square root to both sides

=========================================

Explanations:

  • For problems 1 and 2, there's not much to say other than you'll just have to memorize those terms. Standard form is ax^2+bx+c in general. The exponents count down 2,1,0. Factored form is where we have two or more factors multiplying with each other. Think of something like 21 = 7*3 showing that 7 and 3 are factors of 21.
  • For problem 3, the y intercept is the last value. It's the constant value. Plug in x = 0 and you'll get y = -8 as a result. The y intercept always occurs when x = 0.
  • In problem 4, we apply the square root to both sides to get x = -5 or x = 5. The plus or minus is needed. This is because (-5)^2 = 25.
  • In problem 5, we apply the square root to both sides to undo the squaring operation.
4 0
3 years ago
What does −2 2/3 ÷ (−1/2) equal?
gregori [183]

Answer:

5.33333333333

CAN I HAVE BRAINLIEST?

6 0
2 years ago
Use an area model to show the product of 8x2.23 write your answer in standard form answer
mixas84 [53]

Answer:

17.84

Step-by-step explanation:

2.23

    8 x

-----------

17.84

4 0
2 years ago
Read 2 more answers
"if the standard deviation of a group of 20 scores is 15, what is the variance?"
DerKrebs [107]

We have been given that the standard deviation of a group of 20 scores is 15 and we are asked to find variance.

Since we know variance is square of standard deviation. In order to find out the variance of the given data we have to take the square of 15.

\text{ Variance}=\sigma^{2}\\
=15^{2}=225

Therefore, our variance is 225.


7 0
3 years ago
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