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2 years ago

The sum of 12 and a certain number is equal to the product of 3 and the number

Mathematics

1 answer:

german2 years ago

3 0

Answer:

Read the explanation!

Step-by-step explanation:

Let the "certain number" be $x$ .

( $*$ is a symbol for multiplication).

Create a few equations and expressions:

The sum of 12 and a certain number: $12 + x$

The product of 3 and the number: $3 *x = 3x$

The sum of 12 and a certain number is equal to the product of 3 and the number:

$12 + x$ = $3x$

Solve!

12=3x-x

12=2x

x=6

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a_sh-v [17]

Answer:

Step-by-step explanation:

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3 years ago

How do you convert gallons into ounces

Viefleur [7K]

Multiply number of gallons by 16 (because 16 oz/ 1 gallon).

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3 years ago

When Gerald started on his trip, his odometer read 109,875. At the end of his trip it read 110,480. How many miles did he travel

ozzi

Gerald traveled 605 miles. In order to get this answer you subtract 109,875 from 110,480.

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3 years ago

(9x^2+5x^2+11x)+(-2x^3+9x-8x^2)

lidiya [134]

Answer:

First step is to remove those unnecessary brackets :

$\longrightarrow\tt \: 9 {x}^{3} + 5 {x}^{2} + 11x - 2 {x}^{3} + 9x - 8 {x}^{2}$

Combine the like terms :

$\longrightarrow \tt \: 9 {x}^{3} - 2 {x}^{3} + 5 {x}^{2} - 8 {x}^{2} + 11x + 9x$

$\longrightarrow \boxed{\tt \: 7 {x}^{3} - 3 {x}^{2} + 20x}$

Our final answer is 7x^3 - 3x^2 + 20x .

--------- HappY LearninG <3 --------

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2 years ago

Find c if f (x)=-3 A.x=-3 B.x=5 C.x=6 D.x=-2

mestny [16]

The answer is negative two

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3 years ago