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stepladder [879]
2 years ago
12

tammy bought rolls of paper towels to give to her family members. she first gave half of her paper towels to her niece. after gi

ving to her niece, she then gave away one-fourth of what was left to her sister. finally, after giving to her sister, she gave a third of what was left to her brother. this left her with 16 paper towel rolls. how many rolls of paper towels did tammy originally buy? math
Mathematics
1 answer:
a_sh-v [17]2 years ago
6 0

Answer:

64

Step-by-step explanation:

I just took a random number, got the remaining paper towels, and divided 16 by it. Then I multiplied 16 by that number. 64 every time. Can I please have Brainliest? I just want my first Brainliest. Please??? : ( Please?

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A rectangle has width w and its length is 2 units shorter that 3 times the width
topjm [15]
2(3w-2+w)
=2(4w-2)
=8w-4

the formula for solving perimeters is 2(WL). so L=3w-2, because the question said the length is 2 units shorter than 3 times the width, and the width is w. so the final equation is <span>2(3w-2+w), and then you just have to simplify that </span>
8 0
3 years ago
An opinion poll surveyed 900 people and reported that 36% believe a certain governor broke campaign financing laws in his electi
Anuta_ua [19.1K]

Answer:

The confidence Interval = (0.329, 0.391)

Step-by-step explanation:

Formula for the Confidence Interval for proportion =

p ± z × √p(1 - p)/n

where

p = x/n

From the question

n = 900 people

x = 36% of 900 people

= 36/100 × 900

= 324

z = z score of 95% confidence Interval

z = 1.98

p = x/n

= 324/900

= 0.36

Confidence Interval = p ± z × √p(1 - p)/n

= 0.36 ± 1.96 × √0.36 (1 - 0.36)/900

= 0.36 ± 1.96 ×√0.36 (0.64)/900

= 0.36 ± 1.96 × √0.000256

= 0.36 ± 1.96 × 0.016

= 0.36 ± 0.03136

Confidence Interval = 0.36 ± 0.03136

= 0.36 - 0.03136

= 0.32864

Approximately to 3 decimal places = 0.329

= 0.36 + 0.03136

= 0.39136

Approximately to 3 decimal places = 0.391

Therefore, the 95% confidence interval for the population proportion of people who believe the governor broke campaign financing laws = (0.329, 0.391)

7 0
3 years ago
40% of the students in a class are girls and the number of boys is 24 find the total number of students and the number of girls​
navik [9.2K]

Answer:

Girls = 16

Total students = 40

Step-by-step explanation:

40% of the students are girls, this means 60% of the students are boys.

To find the number of girls, setup a proportion using the percentages and actual number of students in the class. I am going to make the numerator the numbers that go with the girls and the denominator will be the numbers that go with the boys.

Also let's convert the percentages to decimals by moving the decimal two places left.

40% = 0.4 and 60% = 0.6

\frac{.4}{.6} =\frac{g}{24} \\.6g=9.6\\\frac{.6g}{.6} =\frac{9.6}{.6} \\g=16

Now let's find the total number of students by adding the number of girls to the number of boys.

16 + 24 = 40

7 0
1 year ago
You can use the formula c= 5/9 (f-32) to convert temperature in degrees fahrenheit, f, to temperature in degrees celsius,
mrs_skeptik [129]
C=5/9 (62-32)
c=(5/9)*30
c= 150/9
c=16.666....
so c=16.6
6 0
3 years ago
Read 2 more answers
HELP PLEASE
frozen [14]

Answer:

it would take seven and a half hours

Step-by-step explanation:

450 ÷60 =7.5

8 0
3 years ago
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