All categories

3 years ago

40% of what number is 80? (please explain step-by-step!)

Mathematics

2 answers:

Natasha_Volkova [10]3 years ago

4 0

1) Change 40% into a decimal which would .40
2) Multiply .40 by 80
3) The answer is 32

icang [17]3 years ago

3 0

Simply divide 80 by 40%, or .4
80/.4= 200 check by multiplying 200 by .4 or 40%
200 x .4 = 80

You might be interested in

Ben earns $12,800 a year. About 15% is taken out for taxes.How much is taken out for taxes?

Gnoma [55]

$1920 is taken out for taxes

7 0

3 years ago

Enter the equation of the line in the form y=mx where m is the slope.Immersive Reader

kari74 [83]

Answer:

y = 1/2x

Step-by-step explanation:

The slope is the rise (up) over run (left or right depending on if the number is negative) between points. So the next point on the graph is up 5 and over 10. this simplified is 1/2. Then you put this into y=mx which is y=1/2x

4 0

4 years ago

Exercise

Maurinko [17]

X - nominator
y - denominator

$\frac{3x}{y+12}=\frac{3}{4}\\
\frac{x+7}{3y}=\frac{1}{2}\\\\
3(y+12)=12x\\
2(x+7)=3y\\\\
3y+36=12x\\
2x+14=3y\\\\
2x+14+36=12x\\
10x=50\\
x=5\\\\
3y=2\cdot5+14\\
3y=10+14\\
3y=24\\
y=8\\\\
\frac{x}{y}=\boxed{\frac{5}{8}}$

6 0

4 years ago

Help me plis I don’t know (11 points)

klasskru [66]

Answer:

D and E

Step-by-step explanation:

Both of these answers are still equal to the fraction -2/5.

5 0

3 years ago

Find the solution of the equation<br> given below.<br>7+(-5x) = -33

omeli [17]

Answer:

x = 8

Step-by-step explanation:

Given

7 + (- 5x) = - 33

Note that + (- ) = -

7 - 5x = - 33 ( subtract 7 from both sides )

- 5x = - 40 ( divide both sides by - 5 )

x = 8

4 0

4 years ago