2 years ago

What is the value of the unknown number in the verbal description?

Mathematics

2 answers:

levacccp [35]2 years ago

6 0

Answer:

The correct option is A.

Step-by-step explanation:

Let the unknown number be x.

It is given that 5 times the sum of 12 and a number is 80.

$5(12+x)=80$

Using distributive property we get

$5(12)+5x=80$

$60+5x=80$

Subtract 60 from both the sides.

$5x=80-60$

$5x=20$

Divide both sides by 5.

$x=4$

The value of x is 4. Therefore the correct option is A.

OLEGan [10]2 years ago

5 0

12 + 4 = 16

16 x 5 = 80

answer: A. 4

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Neporo4naja [7]

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<h3><u>https://brainly.in/question/10886862</u></h3>

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2 years ago

Express as a trinomial (3x+8) (x+10)

docker41 [41]

Answer:

$3x^{2} +38x+80$

Step-by-step explanation:

Hello!

A trinomial is a expression consisting of three different terms

To turn this into a trinomial we multiply everything to each other

3x * x = $3x^{2}$

3x * 10 = 30x

8 * x = 8x

8 * 10 = 80

Now we put them all together in an equation

$3x^{2} +30x+8x+80$

Combine like terms

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Hope this helps!

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