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SashulF [63]
3 years ago
14

The number of nails of a given length is norm ally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 i

n. Find the number of nails in a bag of 120 that are over 5.03 in. long.
A. About 40 nails
B. About 30 nails
C. About 20 nails
D. About 10 nails
Mathematics
1 answer:
natta225 [31]3 years ago
6 0

Answer:

120·(1 - Ф((5.03 - 5)/0.03)) ≈ 20 nails

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Use the x-intercept method to find all real solutions of the equation. -9x^3-72x^2+36=3x^3+x^2-3x+8
larisa86 [58]

-9x^3-72x^2+36=3x^3+x^2-3x+8                     Add 9x^3 to both sides.

-72x^2 + 36 = 3x^3 + 9x^3 + x^2 - 3x + 8       Add 72x^2 to both sides

36 = 12x^3 +   73x^2 - 3x + 8                           Subtract 36 from both sides.

0 = 12x^3 + 73x^2 - 3x - 28      

It does factor, but it is not very nice.

(x + 6.06)(x - 6.09)(x + 0.632)

If there is any kind of error please report it in a note below.

6 0
3 years ago
What combination of transformations is shown below?
melamori03 [73]

Answer:

Rotated then translated

Step-by-step explanation:

4 0
3 years ago
WILL GIVE BRAINLIEST!!
dexar [7]

Peter reflecting trapezoid ABCD across the y-axis would not change the degree measurement of angle A

The degree measurement of angle A is 115 degrees

<h3>How to determine the degree measurement of angle A?</h3>

From the question, we have:

A = 115 degrees

B = 65 degrees

The transformation is a reflection across the y-axis

Reflection is a rigid transformation; and it does not change the angle measure or side lengths.

After the transformation; we have:

A = 115 degrees

B = 65 degrees

Hence, the degree measurement of angle A is 115 degrees

Read more about transformation at:

brainly.com/question/4289712

8 0
2 years ago
If using the method of completing the square to solve the quadratic equation x2 - 6x – 7 = 0, which number would have to be adde
Vanyuwa [196]

Answer:

(-3)^2

Step-by-step explanation:

You add 7 on both sides, giving you x^2 - 6x = 7

Then, take half of b, and square it. Giving you x^2 - 6x +(-3)^2 = 7

The answer will be (-3)^2 for this question, but this is not the full solution.

Hope this helped. Good luck on the rest!

3 0
2 years ago
Can someone please help me
shutvik [7]
First off you need to convert the numbers into mixed numbers.
1 3/7 goes to 10/7
3 2/3 goes to 11/3

Then you multiply the numerators together:
10 * 11 = 110

Do the same for the denominators:
3 * 7 = 21

Then place it into a fraction and you make the fraction positive because the signs at the start are the same:
110/21

Then you can turn it into a proper fraction:
5 5/21
3 0
3 years ago
Read 2 more answers
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