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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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4(x-5)=18 what does x equal

aliya0001 [1]

Answer:

x = 9.5

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

ATCs are required to undergo periodic random drug testing.

aleksandr82 [10.1K]

Answer:

The responsess to the given question can be defined as follows:

Step-by-step explanation:

$P(medication\ used) = 0.007 \\\\P( drug \not\ used ) = 1 - 0.007 = 0.993\\\\P(test\ positive | medication \ used) = 0.96 \\\\ P(test \ negative | medication \ used) = 1 - 0.96 = 0.04\\\\$

$P(Point | Non-used\ medication )=0.93\\\\ P(Point |No\ medication ) = 1 - 0.93 = 0.07$

As per the given info we draw the tree diagram which is defined in the attachment file.

$P ( test \ is\ positive ) = P( medication \ used ) \times P( Test \ positive | medication \ used ) + P( medication not \ used ) \times P( Test\ positive | medication \ not \ used )$

$= ( 0.007 \times 0.96 ) + ( 0.993\times 0.07 )\\\\= 0.0762$

$P( medication \ used | test\ positive )= \frac{\textup{P( medication used ) *P( Test positive given medication used )}}{\textup{P( medication used )}}$

$= \frac{( 0.007\times 0.96 )}{0.0762}\\\\= 0.0882$

8 0

2 years ago

Johanna has to solve the system of equations using substitution. She isolates x in the second equation. Which should be her next

olganol [36]

Answer: A) 3(10 - 5y) + 6y =12

Step-by-step explanation:

As per the question , the given system of linear equation :

$3x+6y=12---(i)\\\\ x+5y=10---(ii)$

Here , To solve the system of equations using substitution , Johanna isolates x in the second equation and writes

$x=10-5y$

As per the substitution method , the next step is to substitute the isolated value of 'x' in first equation , thus the next step will become

$3(10-5y)+6y=12$

Hence, the correct option is A) 3(10 - 5y) + 6y =12

6 0

3 years ago

Find the circumference of the larger circle if the area of one of the smaller circles is 48 pi in^2.

notsponge [240]

Answer:

C. 16√3π in.

Step-by-step explanation:

Circumference of a circle = 2πr where

r is the radius of the circle.

Given the area of one of the smaller circle to be 48π in², we can get the radius of one of the smaller circle.

If A = πr²

48π = πr²

r² = 48

r = √48 in

The radius of one of the smaller circle is √48.

To get the circumference of the larger circle, we need the radius of the larger circle. The radius R of the larger circle will be equivalent to the diameter (2r) of one of the smaller circle.

R = 2r

R = 2√48 inches

Since C = 2πR

C = 2π(2√48)

C = 4√48π in

C = 4(√16×3)π in

C = 4(4√3)π in

C = 16√3π in

Thw circumference of the larger circle is 16√3π in.

3 0

2 years ago

Read 2 more answers

Does someone mind helping me with this question? Thank you!

Soloha48 [4]

Answer: 640

Step-by-step explanation:

The scale factor is 20/5=4, so the ratio of the areas is the square of this, or 16.

Thus, the area of ABCD is 40(16)=640.

4 0

1 year ago