3 years ago

Greta has watched 30 minutes of a movie. This is 20%of the entire movie. How long is the movie?

1 answer:

german3 years ago

8 0

The answer is 180 minutes. because you multiply 30 times 0.20 and you get 6. Then you multiply 6 times 30 and get 180 minutes. And 180 minutes in hours is 3 hours.

You might be interested in

What is 904.358 rounded to the nearest ten and nearest tenth?

Oksana_A [137]

the answer is 904.4

6 0

3 years ago

Read 2 more answers

Find the number that we can place in the box, so that the resulting quadratic is the square of a binomial.

Arturiano [62]

We need a number to complete

$(x+c)^2=x^2+2xc+c^2$

Since we have

$2xc=\dfrac{4}{5}x \iff 2c=\dfrac{4}{5}\iff c=\dfrac{4}{10}=\dfrac{2}{5}$

And so the expanded square is

$\left( x+\dfrac{2}{5}\right)^2=x^2+\dfrac{4}{5}x+\dfrac{4}{25}$

6 0

3 years ago

Divide round your answer to the nearest hundredth 1divide3

salantis [7]

1 divided by 3
$\frac{1}{3}$
Turn fraction into decimal
$0.333$
Since it is repeating, and it's a 3, you don't need to round it up
The rule is 5+ = round up while 4- = round down.

7 0

3 years ago

Solve the equation -10×+1+7×=37

Vlad [161]

Answer:

I am pretty sure it is -12

4 0

3 years ago

Read 2 more answers

Malia runs 5 miles in 1 hour. How many miles does she run in half an hour? In 2 1/2 hours?

Vika [28.1K]

OK so you take the 5 miles in one hour and divide that by 2 to find the half hour
x=5/2 x= 2.5 miles

To find the 2 1/2 hours you take the hour distance (5) double it and add the half hour distance
x=(5 x 2) + 2.5 x= 10 + 2.5 x=12.5 miles

7 0

3 years ago

Greta has watched 30 minutes of a movie. This is 20%of the entire movie. How long is the movie?​

Greta has watched 30 minutes of a movie. This is 20%of the entire movie. How long is the movie?