Jae's homework consists of 16 math problems. She has finished 4 problems so far.

2 answers:

5 0

To solve this problem, you can first set up a fraction to show how much is done out of the total amount of questions. Since there are 16 total questions, the denominator will be 16. Since 4 questions were answered, 4 is going to be the numerator. So, your fraction will be 4/16.

4/16 can be simplified to 1/4

Divide 1 by 4 to get a decimal. The decimal that you get should be 0.25. Move the decimal point to the right 2 places to get what it is as a percent.

0.25 = 25%

VMariaS [17]2 years ago

3 0

Jae has finished 25% of her homework.

4/16
=1/4
=1÷4
=0.25

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Find two numbers if their sum is 6.1 and their difference is 1.6

Radda [10]

For this case, the first thing we must do is define variables:
x: unknown number (1)
y: unknown number (2)
We now write the equations that model the problem:
their sum is 6.1:
$x + y = 6.1
$
their difference is 1.6:
$x - y = 1.6
$
Solving the system we have:
We add both equations:
$x + x = 6.1 + 1.6

2x = 7.7

x = 7.7 / 2

x = 3.85$
Then, we look for the value of y using any of the equations:
$x - y = 1.6

y = x - 1.6

y = 3.85 - 1.6

y = 2.25$
Answer:
The numbers are:
$x = 3.85

y = 2.25$