3 years ago

PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

AnnZ [28]3 years ago

6 0

Answer:

hard

Step-by-step explanation:

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You purchased 132.49 dollars worth of wheels and bearings for your skateboards. The shop charges 15 dollars per board to install

makvit [3.9K]

Answer:

Four

Step-by-step explanatio

Materials + installation = $192.49

-Materials = 132.49

Installation = $ 60.00

Installation cost = 1 skateboard/$15

No. of skateboards = 60.00 × 1/15

No. of skateboards = 4

Four skateboards will be repaired.

3 0

3 years ago

A light bulb factory produces 1,188 light bulbs every hour. Approximately 3.83% of the light bulbs are defective, and do not wor

andreev551 [17]

Answer:

The standard deviation of the number of defective bulbs produced in an hour is 6.615

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

In this problem, we have that:

$p = 0.0383, n = 1188$

What is the standard deviation of the number of defective bulbs produced in an hour

$\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{1188*0.0383*(1-0.0383)} = 6.615$

The standard deviation of the number of defective bulbs produced in an hour is 6.615

8 0

3 years ago

35 points! plz help ASAP I have worked the problem a-(2+3) =-2

Firlakuza [10]

a-(2+3)=-2

a-5=-2

a=3

You add 5 to -2 to get your answer.

6 0

3 years ago

Read 2 more answers

It is used to represent the product

arlik [135]

What’s your question?

5 0

3 years ago

Ed is on a road trip. He has already traveled 225 miles and is driving at a rate of 62 miles per hour. Which equation could be u

11Alexandr11 [23.1K]

Answer: 62(x) + 225 = 605

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I hope this helps you, and enjoy the rest of your day!!

7 0

3 years ago