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2 years ago

Jennifer babysat for 6 hours and earned $52.50. divide what is her hourly rate?

Mathematics

2 answers:

cricket20 [7]2 years ago

7 0

Answer:

$8.75

Step-by-step explanation:

52.50/6=8.75

To make sure that is correct

8.75×6

vlabodo [156]2 years ago

5 0

Answer:

Her hourly rate is $8.75

Step-by-step explanation:

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Two samples each of size 25 are taken from independent populations assumed to be normally distributed with equal variances. the

NeTakaya

$n_1=25, n_2=25\\ \bar{X_1}=35.5, \bar{X_2}=33\\ s_1=3, s_2=4$

Pooled Combined Variance $s_p=12.5$

Test Statistic:

$t=\frac{\left(\bar{X_1}-\bar{X_2}\right)}{s_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}$

$t=\frac{\left(35.5-33\right)}{12.5\sqrt{\frac{1}{25}+\frac{1}{25}}}$

$\left|t\right|=0.01414$

Degrees of freedom = $n_1+n_2-2=25+25-2=48$

$\alpha =0.05$

$t-Critical =t_{\alpha /2, n_1+n_2-2}=t_{0.025, 48}=-2.0206 \\Table value=|t|=2.0206\\|t|=2.0206$

The table value is greater than the calculated value.

Thus we accept H0.

8 0

3 years ago

The Martinez family walked three over five of a mile in three over eight of an hour. What equation can be used to calculate thei

jolli1 [7]

Velocity=distance/time

v=d/t

So in this case:

v=(3mi/5)/(3hr/8) that's the equation you need to solve.

v=(3m/5)*(8/3hr)

8/5 mph=(3m/5)*(8/3hr)

1 3/5 mph= (3/5)/(3/8)

So the first statement is correct.

7 0

3 years ago

Chose 1 answer:<br> A. 5.4<br> B. 5-4<br> C. 4/5<br> D. 5/4

umka2103 [35]

Answer:

D. 5/4

Step-by-step explanation:

A. 5.4 can't be 'cause the shade did not reach 5 on number line.

B. 5 - 4 = 1 can'e be 'cause it pass 1.

C. 4 / 5 = 0.8 can't be 'cause its less than the shade.

D. 5 / 4 = 1.25 correct

8 0

3 years ago

Mike and Ike are twins. Mike’s age is one more than twice a certain number. Ike’s age is 10 less than triple that same number. F

Misha Larkins [42]

Mike age is 3 less then twice the age of his brother nuke.
M = Mike's age now
N = Nuke's age now
M = 2N - 3

Ten years ago, four times nuke's age was one more mike's age.
M-10 = Mike's age 10 years ago
N-10 = Muke's age 10 years ago
4(N - 10) = 1 + M -10

what are their present ages

find M and N

substitute M = 2N - 3 into 4(N - 10) = 1 + M -10:

4(N - 10) = 1 + [2N - 3] - 10
4N - 40 = 2N - 12
2N = 28
N = 14

M = 2(14) - 3 = 28 - 3 = 25

Mike is 25 and Nuke is 14.

check:
4(14 - 10) = 4(4) = 16 = 26 -10 = 1 + 25 - 10

4 0

2 years ago

Coach Bruch had 12 quarts of milk. How much is this in cups?

Thepotemich [5.8K]

Answer: 48

Step-by-step explanation: there is 4 cups in a quart

5 0

3 years ago