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IrinaK [193]
3 years ago
12

Anna babysits on the weekends she charges $7 per hour last weekend she made a total of $63 how many hours did she babysit let h

represent the number of hours she worked
Mathematics
1 answer:
kvasek [131]3 years ago
7 0

Answer:

9 hours, I hoped this helped :)

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Grade 6 - End of term assessment
sertanlavr [38]

Answer:

The greatest number of 15 inches pieces that can be cut from 5 rolls of length 9 feet is: 35

Step-by-step explanation:

Given

Total length of one roll of ribbon = 9 feet

As the pieces have to be cut into inches, we will convert the measurement in feet to inches

As there are 12 inches in one feet, 9 feet will be equal to:

9*12 = 108 inches

Now first of all, we have to see how many 15 inches pieces can be cut from one role

So,

=\frac{Length\ of\ roll}{Length\ of\ piece}\\=\frac{108}{15}\\=7.2

So the seamstress can cut 7 15-inch long pieces from a roll.

Now given that he has to cut from 5 rolls, the total number of 15-inch pieces will be:

= 5 * 7 =35

Hence,

The greatest number of 15 inches pieces that can be cut from 5 rolls of length 9 feet is: 35

5 0
3 years ago
Round the fraction to 0, 1/2, or 1.<br><br><br><br> 9/10
marishachu [46]

Answer:

round to 1

Step-by-step explanation:

it is closest to 1 so it wouldnt make sense to round to a number farther away

4 0
3 years ago
A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time student
Butoxors [25]

Answer: (21.541,\ 23.059)

Step-by-step explanation:

The confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n=240 , which is a large sample , so we apply z-test .

Sample mean : \overline{x}=22.3

Standard deviation : \sigma= 6

Significance level : \alpha=1-0.95=0.05

Critical value : z_{\alpha/2}=1.960

Now, a confidence interval at the 95% level of confidence will be :-

22.3\pm(1.960)\dfrac{6}{\sqrt{240}}\\\\\approx22.3\pm0.759\\\\=(22.3-0.759,\ 22.3+0.759)\\\\=(21.541,\ 23.059)

7 0
3 years ago
Does anyone know how to change their username for Brainly????? If so HELP!!!!!!!!!! Will give 20 points to anyone I really don't
Len [333]

Answer:

no I don't is it not in the user settings?

8 0
3 years ago
Read 2 more answers
Savannah had 40 iris blooms last year this year she had 15% more iris blooms how many more hours blooms did Savannah have this y
lisov135 [29]

Answer:

she had 6 more iris bloom this year

Step-by-step explanation:

40 times .15 is 6

8 0
3 years ago
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