All categories

3 years ago

Explain how you could use mental math to find the following sum. Then find the sum.

Mathematics

1 answer:

dexar [7]3 years ago

4 0

Add up all like factors so just add all of them up

You might be interested in

Lulu made 10 pounds of unicorn slime and divided the slime equally among 6 jars. How much slime went in each jar?

Andrew [12]

Answer:

1.6

Step-by-step explanation:

10 divide by 6 equals 1.6 repeating

7 0

3 years ago

Read 2 more answers

What is 4.5x + 2.5(x - 4)

marysya [2.9K]

Answer:

7x-10

Step-by-step explanation:

4 0

4 years ago

Graph the line with the equation y=1/3x+1

devlian [24]

Answer:

See photo

Step-by-step explanation:

$\frac{1}{3}$ = $\frac{rise}{run}$

1 = slope intercept

6 0

3 years ago

Which polynomial is equivalent to (11r – 8) + (5r - 9)?

pickupchik [31]

<h3>Answer: 16r - 17</h3>

Work Shown:

(11r - 8) + (5r - 9)

11r - 8 + 5r - 9

(11r+5r) + (-8-9)

16r - 17

4 0

3 years ago

A certain animated movie earned $ 1 . 1 ? 1 0 9 $1.1?10 9 in revenues at the box office. The movie lasts 9 . 1 ? 1 0 1 9.1?10 1

Leokris [45]

Answer:

$ $1.21\times 10^{7}$ per minute.

Step-by-step explanation:

We have been given that a certain animated movie earned $ $1.1\times10^{9}$ in revenues at the box office. The movie lasts $9.1\times10^{1}$ minutes.

To find the revenue earned per minute of the movie we will will divide $1.1\times10^{9}$ by $9.1\times10^{1}$ .

$\text{The revenue earned per minute by the movie}=\frac{1.1*10^{9}}{9.1*10^{1}}$

Using quotient rule of exponents we will get,

$\text{The revenue earned per minute by the movie}=\frac{1.1}{9.1}*10^{(9-1)}$

$\text{The revenue earned per minute by the movie}=\frac{1.1}{9.1}*10^{8}$

$\text{The revenue earned per minute by the movie}=0.1208791208791209\times 10^{8}$

We can write 0.1208791208791209 as $1.208791208791209\times10^{-1}$ .

$\text{The revenue earned per minute by the movie}=1.208791208791209\times 10^{-1} \times 10^{8}$

Using product rule of exponents we will get,

$\text{The revenue earned per minute by the movie}=1.208791208791209\times 10^{-1+8}$

$\text{The revenue earned per minute by the movie}=1.208791208791209\times 10^{7}$

Upon rounding our answer to two decimal places we will get,

$\text{The revenue earned per minute by the movie}=1.21\times 10^{7}$

Therefore, the movie had earned a revenue of $ $1.21\times 10^{7}$ per minute.

7 0

4 years ago

Read 2 more answers