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2 years ago

Four friends charge different amounts for babysitting. Who charges the most per hour?

Mathematics

2 answers:

lesya [120]2 years ago

8 0

We need the rates please attach a picture

dalvyx [7]2 years ago

3 0

Answer:

Xiavier changes the most :).

Step-by-step explanation:

Claudia work for 3 hours to get $28

Xiavier works for 2 hours to get $20

Ling works for 4 hours to get $30

And Alyssa works 6 hours to get $45

Claudia is charging $9.33 per hour

Xiavier is charging $10 per hour

Ling is charging $7.50 per hour

and Alyssa is charging 7.50 per hour.

This makes your answer Xiavier.

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What is the degree of 5xyz

natta225 [31]

Answer:

Step-by-step explanation:

Add up the exponents of the variables

5xyz = 1+1+1 = 3

The degree is 3

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3 years ago

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According to government data, 75% of employed women have never been married. Rounding to 4 decimal places, if 15 employed women

blagie [28]

Answer:

We are given that According to government data, 75% of employed women have never been married.

So, Probability of success = 0.75

So, Probability of failure = 1-0.75 = 0.25

If 15 employed women are randomly selected:

a. What is the probability that exactly 2 of them have never been married?

We will use binomial

Formula : $P(X=r) =^nC_r p^r q^{n-r}$

At x = 2

$P(X=r) =^{15}C_2 (0.75)^2 (0.25^{15-2}$

$P(X=2) =\frac{15!}{2!(15-2)!} (0.75)^2 (0.25^{13}$

$P(X=2) =8.8009 \times 10^{-7}$

b. That at most 2 of them have never been married?

At most two means at x = 0 ,1 , 2

So, $P(X=r) =^{15}C_0 (0.75)^0 (0.25^{15-0}+^{15}C_1 (0.75)^1 (0.25^{15-1}+^{15}C_2 (0.75)^2 (0.25^{15-2}$

$P(X=r) =(0.75)^0 (0.25^{15-0}+15 (0.75)^1 (0.25^{15-1}+\frac{15!}{2!(15-2)!} (0.75)^2 (0.25^{15-2})$

$P(X=r) =9.9439 \times 10^{-6}$

c. That at least 13 of them have been married?

P(x=13)+P(x=14)+P(x=15)

$={15}C_{13}(0.75)^{13} (0.25^{15-13})+{15}C_{14} (0.75)^{14}(0.25^{15-14}+{15}C_{15} (0.75)^{15} (0.25^{15-15})$

$=\frac{15!}{13!(15-13)!}(0.75)^{13} (0.25^{15-13})+\frac{15!}{14!(15-14)!} (0.75)^{14}(0.25^{15-14}+{15}C_{15} (0.75)^{15} (0.25^{15-15})$

$=0.2360$

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3 years ago

Pls help me I need it pls!! I only need the last question which is "Find the weight of one circle. Show or explain how you got y

r-ruslan [8.4K]

Answer: 25/4=6.25

Explanation:
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3 years ago

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Step-by-step explanation:

Putting values of x and y

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3 years ago

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Two digits of the 5-digit number A = 74*9* are missing. Fill in the missing digits so that the number obtained is the smallest p

e-lub [12.9K]

Answer:

A = 74295.

Step-by-step explanation:

74*9*

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So we try 74090/45 - not an integer

74095/45 = No

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3 years ago

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