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galben [10]
3 years ago
7

Molly wants to buy a scooter for $540. She can save $75 a week but owes her sister $60. How many weeks will it take Molly to pay

back her sister and buy the scooter?
Mathematics
1 answer:
vesna_86 [32]3 years ago
8 0

Answer:

SORRY DONT KNOW! :/

Step-by-step explanation:

:>

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HELP PLEASE!!!!!!!!!!!!!!
Lady_Fox [76]

Answer:

Savannah

Step-by-step explanation:

Emery has solved it incorrectly;

x = 100

7 0
3 years ago
Select the expression that simplifies to a value of 6.
Vika [28.1K]
The 4th one is the right
3 0
2 years ago
M ∠abd=87 M ∠abd=9x-1 M ∠cbd =6x+58
elena-s [515]

Answer:

there is no answer to this

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
If A= (7,9) and B= (3,12) what is the length of AB?
MissTica
The length can be found using the Pythagorean Theorem...

c^2=a^2+b^2 and in this case:

d^2=(dx^2)+(dy^2)

d^2=(3-7)^2+(12-9)^2

d^2=-4^2+3^2

d^2=16+9

d^2=25

d=5 

So the length of AB=5 units.
8 0
3 years ago
Read 2 more answers
A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. Determ
Hunter-Best [27]

Answer:

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not.

This means that n = 100, \pi = \frac{20}{100} = 0.2

68% confidence level

So \alpha = 0.32, z is the value of Z that has a pvalue of 1 - \frac{0.32}{2} = 0.84, so Z = 0.995.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 - 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.16

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 + 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.24

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

4 0
3 years ago
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