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liberstina [14]
3 years ago
8

The life expectancy of a typical lightbulb is normally distributed with a mean of 2,100 hours and a standard deviation of 40 hou

rs. What is the probability that a lightbulb will last between 1,965 and 2,165 hours?
Mathematics
1 answer:
kodGreya [7K]3 years ago
3 0
\mathbb P(1965
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Evan is signing up for a gym membership with a one-time fee to join and then a monthly fee to remain a member. The total cost of
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Answer:

the slope of the function is 40 which represents the monthly fee to remain a mrmber.

Step-by-step explanation:

THE SLOPE IS THE COEFFICIENT OF THE INDEPENDENT VARIABLE

C= 40t + 125

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I only need help on questions 6 and 7. (Use the congruent figure on top to answer 6 and 7.)
allsm [11]

Answer:

See below.

Step-by-step explanation:

All statements of congruent angles and congruent segments are correct.

A similarity statement can be written ...

Write a similarity statement ...

ABCD ~ HJKL

The reason written in the problem is incorrect. The polygons are similar, not congruent, so you cannot state that they are congruent as a reason for them to be similar.

This is the correct reason:

"The reason as why the two shapes are similar is that each angle A, B, C, D is congruent to each corresponding angle H, J, K, L, respectively, and the lengths of corresponding sides are proportional."

"A similarity ratio is a ratio that compares the <u>lengths</u> of the corresponding sides of two similar polygons. The ratio is written in the same order as the <u>two</u>

<u>polygons.</u>"

For the similarity ratio, we use two corresponding sides.

AB = 8; HJ = 12

AB/HJ = 8/12 = 2/3

The similarity ratio of ABCD to HJKL is 2/3.

5 0
3 years ago
D. Complementary
White raven [17]

Answer:

I=500×3×2.5÷100

=37.5

Step-by-step explanation:

500-37.5

=462.5

5 0
3 years ago
Can somebody help me ?
nata0808 [166]
You are solving quadratic equations. to do so, use the quadratic formula​ when possible, or factor. 15- for example, you can factor (x+5)(x+3), therefore x=-5,-3. You then go back and plug in your answers to see if you can eliminate any of them.
6 0
3 years ago
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