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3 years ago

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

Mathematics

1 answer:

german3 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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Please someone help me. Im giving brainliest!

ArbitrLikvidat [17]

Answer:

To solve the equation: First, subtract 9 from both sides of the equation. Second, divide both sides of the equation by -10

Step-by-step explanation:

We are subtracting from both sides because we need to do the inverse, and the inverse of adding 9 is subtracting it.

Same with the -10. We need to do the inverse, and the inverse of multiplying by -10 is dividing by it.

5 0

2 years ago

Read 2 more answers

Solve for x, given the equation Square root of x plus 9 − 4 = 1.

Daniel [21]

ANSWER

The value of x is
$16.$

EXPLANATION

We want to solve the equation,

$\sqrt{x + 9} - 4 = 1$

The first step is to add 4 to both sides of the equation to obtain,

$\sqrt{x + 9} = 1 + 4$

We simplify the right hand side to obtain,

$\sqrt{x + 9} = 5$

We now square both sides of the equation to obtain,

$(\sqrt{x + 9} ) ^{2} = {5}^{2}$

This simplifies to

$x + 9= 25$

We solve for x to obtain,

$x = 25 - 9$

This implies that,

$x = 16$

4 0

3 years ago

Suppose that circles A and B have a central angle measuring 40°. Additionally, circle A has a radius of 5 2 ft and the radius of

vladimir1956 [14]

It is 9/4π ft².

Since the central angle is 40°, this is 40/360 = 1/9 of the circle.

The area of the circle is given by A=πr²; since r=9/2, we have
A=π(9/2)² = 81/4π

Multiplying this by 1/9,
81/4π(1/9) = 81/36π = 9/4π

4 0

3 years ago

(50 POINTS) (PLEASE ANSWER THE QUESTION, NOT JUST TRY AND TAKE MY POINTS, I NEED HELP ON THIS SO DO NOT ANSWER IF YOU DO NOT KNO

jarptica [38.1K]

Answer:

No, there is no proportional relationship

Step-by-step explanation:

The proportional relationship is:

y = kx, which is a special form of linear equation, with zero y-intercept

In the given case we have:

y = 4.5x + 10

This is a linear function but not proportional relationship because it has y-intercept, different than zero

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3 years ago

A farmer owns a total of 10 acres of land. The land is separated into 4 2/3 equally sized sections. How many acres are in each s

Ostrovityanka [42]

Answer:

I will solve the question and answer

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3 years ago