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frosja888 [35]
3 years ago
14

Simplify by combining like terms 4x(x+9)+10x

Mathematics
1 answer:
Natalija [7]3 years ago
6 0

Answer:

4x^{2} + 46x

Step-by-step explanation:

<u>Step 1:  Distribute  </u>

(4x * x) + (4x * 9) + 10x

4x^{2} + 36x + 10x

<u>Step 2:  Combine Like Terms </u>

4x^{2} + 36x + 10x

4x^{2} + (36x + 10x)

4x^{2} + 46x

Answer:  4x^{2} + 46x

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At the start of the week a bookshop had science and art books in the ratio 2:5. By the end of the week, 20% of each type of book
Anastaziya [24]
Let there be 2x science and 5x art books 
<span>science books sold = 2x × 0.2 = 0.4x </span>
<span>science books unsold = 2x – 0.4x = 1.6x </span>

<span>art books sold = 5x × 0.2 = x </span>
<span>art books unsold = 5x – x = 4x </span>

<span>total books unsold = 1.6x + 4x = 5.6x </span>
<span>5.6x = 2240 </span>
<span>x = 400 </span>

<span>2x science = 800 </span>
<span>and 5x art books = 2000 </span>
5 0
3 years ago
NEED ANSWER ASAP PLEASE WILL GIVE BRAINLIEST An integer n is divided by 2 and the quotient is an even integer. What does this te
Nesterboy [21]

Answer:

n is a multiple of 4

Step-by-step explanation:

Let's think about this.

Even numbers are basically numbers that, when divided by 2, get us an integer.

This means that n must be an even integer.

<em>However,</em>

Every other even number, when divided by 2, gets you an odd integer.

This means that every second even number, n \div 2 gets us an even number.

This also means that every time n \div 2 is an even number, n will be a multiple of 4 (as 2\cdot 2 = 4).

Test this out with any even number that's a multiple of 4 (all multiples of 4 are even numbers)

Hope this helped!

4 0
3 years ago
If 15 people can empty the truck in 60 minutes, how long will it take 25 people to empty the same truck.
nikklg [1K]
60 divide dos by 15 is 4, so it takes 4 minutes for each person to empty it.
25 x 4 = 100, so the answer would be 100 minutes.
8 0
3 years ago
Solve the equation<br> 6.7x = 5.2x + 12.3
Anna [14]

Answer:

x = 8.2

Step-by-step explanation:

6.7x = 5.2x + 12.3

6.7x - 5.2x = 12.3

1.5x = 12.3

x = 8.2 =  \frac{41}{5}  = 8 \frac{1}{5}

7 0
3 years ago
Can someone help me with this question?
Reil [10]

Answer:

3,512

Step-by-step explanation:

3,520-8=3,512

4 0
3 years ago
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