Dave found that 4/5 of the students in his class have a cell phone. what percent of the students in his class do not have a cell phone

20% of the students in Dave's class don't have a cell phone.

Step-by-step explanation:

Multiply 4/5 by 100:

Cross simplify 4/5 and 100 to change 5 to 1 and 100 to 20:

Once you multiply, you should get 80%. 80% is the number of students that have a cell phone. To get the number of students who don't have a cell phone, we have to subtract 100% by 80%:

100%

-80%

--------

20%

➳ Hope this helps!

➳ CloutAnswers

It must have the same slope as the given line, so

m = -A/B = -1/-2 = 1/2

So far, we have

y = mx + b = x/2 + b

Use the given point to find b.

4 = -2/2 + b = -1 + b

b = 5

y = x/2 + 5

Multiply through by 2.

2y = x + 10

Standard form:

x - 2y = -10