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3 years ago

15

Liza wants to have more than $750 in her savings account before she will leave for college. Right now she has $300, and she is g

oing to babysit to earn $12.00 an hour. How many hours will Liza need to babysit before she leaves for college?

1 answer:

Kazeer [188]3 years ago

6 0

She will need a minimum of 38 hours, at 38 hours she will make 456, plus the 300 she already has, so that in total is 756.

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A batch of 500 machined parts contains 10 that do not conform to customer requirements. Parts are selected successively, without

sveticcg [70]

Question:

For the following exercise, determine the range (possible values) of the random variable. A batch of 500 machined parts contains 10 that do not conform to customer requirements. Parts are selected successively, without replacement, until a nonconforming part is obtained. The random variable is the number of parts selected.

Answer:

Possible values are all integers from 1 to 491.

{1,2,...........491}

Step-by-step explanation:

Given:

Total number of machined parts = 500

Number that do not conform to customers requirements = 10

Number that conforms to customers requirements = 500 - 10 = 490

Since, parts are selected successively, without replacement, until a nonconforming part is obtained, the range of the random variable (number of parts selected) here will be all integers from 1 to 491 ie {1,2,...........,491}.

Here, we have a total of 490 conforming parts, and 10 non conforming parts, there must be a non-conforming part among 491 selections, considering the fact that total number of parts are 500

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3 years ago

A bicycle company makes 3 different bicycle styles. Each style comes in 4 colors. Each style is made in 6 frame sizes with a cho

horsena [70]

$3*4*6*2 = 144$

I guess that is the answer.

Hope this helps !

Photon

5 0

3 years ago

Can someone’s please help

Fiesta28 [93]

Answer:

4.87 ft

Step-by-step explanation:

The height of the skylight =

The height of the blue △ - the height of the red △

Let <em>b</em> ft be the height of the blue △.

sin 60° = $\frac{b}{25}$

<em>b</em> = 25 sin 60°

Let <em>r</em> ft be the height of the red △.

tan 40° = $\frac{r}{20}$

<em>r</em> = 20 tan 40°

The height of the skylight

= 25 sin 60° - 20 tan 40°

= 4.87 ft (rounded to the nearest hundredth)

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3 years ago

The larger number of two is seven less than three times the smaller number. If the sum of the numbers is 61, find the numbers.

Reika [66]

Answer:

27 and 34

Step-by-step explanation:

2x+7=61

2x=54

x=27

27+7=34

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3 years ago

Anyone want branliest I need help on my homework I dont understand the question.

fenix001 [56]

Answer:

3-106

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b. 6

c. -7

3-107

a. 5/8

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Step-by-step explanation:

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3 years ago