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3 years ago

Explain in words how to change a fraction to a percent

2 answers:

4 0

Let's take 1/5 as an example. Okay so percents are usually x/100. So what times 5 equals 100? 20! So we multiply both the top and bottom by 20. 1 x 20= 20 and 5 x 20= 100. So it would be 20/100 as a fraction. Now since a percent is out of 100, then you just take the 20 as a percent. The answer to this would be 20%. Now for numbers that don't easily go Into 100. Let us look at 2/3. You would have to divide 2 by 3 which is .6666. Now put decimal two places to the right. Percent is 66%

Fynjy0 [20]3 years ago

3 0

Hi , you have to divide the numerator and the denominator , if you get a decimal you just have to move the period 2 spaces to the right.
For example
3/8 -0.375
0.375 - 37.5

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If 80% is 72 marks what is full marks <br><br> can someone tell me the answer please

tekilochka [14]

80% = 0.8

100% = 1

0.8 = 72

1 = x

0.8* x = 72 * 1

x = 72 / 0.8 = 90

0.8 * 90 = 72

80% * 90 = 72

5 0

3 years ago

K+2 is greater than 12 and k+2 is less than or equal to 18

krok68 [10]

k + 2 > 12

so k > 10

k + 2 ≤ 18

so k ≤ 16

Solution is 10 < k ≤ 16

4 0

4 years ago

The lengths of the sides of a triangle are consecutive odd numbers. What is the length of the longest side if the perimeter is 4

Usimov [2.4K]

Answer:

Step-by-step explanation:

Let x be the first side

x+2 is the next side ( consecutive odd number)

x+4 is the third side ( consecutive odd number)

P = x + x+2 + x+4

45 = x + x+2 + x+4

Combine like terms

45 = 3x+6

Subtract 6 from each side

45-6 = 3x+6-6

39 = 3x

Divide by 3

39/3 = 3x/3

13 =x

The longest side is

x+4

13+4 = 17

The longest side is 17

7 0

3 years ago

How far in feet will a child on the edge of the merry-go-round travel? If r=6 feet, the angle is 310

goblinko [34]

Answer:

First some theory we need to solve this problem.

For a circle of radius R, the perimeter is:

P = 2*pi*R

where pi = 3.14

If we have a section of this circle, defined by an angle θ, the length of this arc will be:

A = (θ/360°)*2*pi*R

In the case of the problem, the total distance that the child travels is equal to the length of an arc of 310° in a circle of radius r = 6ft.

Using the above formula, we know that the length of this arc is:

A = (310°/360°)*2*3.14*(6ft) = 32.4 ft

7 0

3 years ago

Im trying to plot a slope function on a graph

mixer [17]

Answer:

Graphing from slope

Step-by-step explanation:

To graph a linear equation in slope-intercept form, we can use the information given by that form. For example, y=2x+3 tells us that the slope of the line is 2 and the y-intercept is at (0,3). This gives us one point the line goes through, and the direction we should continue from that point to draw the entire line.

3 0

3 years ago