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4 years ago

Please need help and steps

Mathematics

1 answer:

Solnce55 [7]4 years ago

3 0

Answer: 2 and 17/20 mm is the total thickness of the stack.

Step-by-step explanation:

Get the values you need for the dime and the penny from the chart:

dime: 1 and 7/20mm , penny: 1 and 1/2mm

Find common denominators for the fractions given in the chart.

20 will work because 1/2 is the same as 10/20.

Add the numerators of the fractions: 7 + 10 = 17 so the fraction will be 17/20

Add the whole numbers 1 + 1 = 2

Put it all together and now you've got 2 and 17/20 mm

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In Ms.Khans class,22 out of 25 students hand in their projects on time. What percent of the class hand in their projects on time

Nikitich [7]

88 % students of the class hand in their projects on time

Solution:

Given that, Ms.Khans class, 22 out of 25 students hand in their projects on time

Total number students = 25

Students hand in their projects on time = 22

To find: percent of the class hand in their projects on time

$\text{ percent of class hand in time } = \frac{\text{Students hand in projects on time}}{\text{total students}} \times 100$

Substituting the values, we get

$\text{ percent of class hand in time } = \frac{22}{25} \times 100\\\\\text{ percent of class hand in time } = 0.88 \times 100\\\\\text{ percent of class hand in time } = 88$

Thus 88 % students of the class hand in their projects on time

5 0

3 years ago

Write an algebraic expression for product of 10 and the sum of x and 8

egoroff_w [7]

That would be the same as : 10 × (x + 8)

Okay, so it's asking for the product of 10, and the sum of 8 and k. Sum is the answer to an addition problem, so that would make the last of it 8 + k. And we'd be multiplying this with 10, so that would make it : 10 × (x + 8)

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4 years ago

20+20+20+20+20+20+20+20+20+/245+85678345+8657

melomori [17]

Answer:

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Step-by-step explanation:

3 0

2 years ago

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Mike observed that 75% of the students of a school liked skating. If 35 students of the school did not like skating, the number

Allisa [31]

If 75% liked skating, then 25% did not
so 25% of what is 35
0.25x = 35
x = 35/0.25
x = 140...so there is a total of 140 students

75% of 140 =
0.75(140) = 105...so 105 students liked skating

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3 years ago

The length of a rectangle is 4 cm more than the width and the perimeter is at least 48 cm. What are the smallest possible dimens

Luden [163]

Let w be the width then w+4 is the length and 2*w+2*(w+4)=4*w+8 is the expression for the perimeter. So
4*w+8>=48
4*w>=40
w>=10

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4 years ago