All categories

3 years ago

X+9 divided by 3 equals 8

Mathematics

2 answers:

kykrilka [37]3 years ago

8 0

Answer: 15

Step-by-step explanation:

I am assuming the equation is set up like this:

(x+9)/3 = 8

Multipy by 3 to both sides

x + 9 = 24

Subtract 9

x = 15

Lelu [443]3 years ago

8 0

Answer:

Step-by-step explanation:

24 divided by 3 = 8

so 24 - 9 = 15

so 15 is your answer.

You might be interested in

Sqrt(2x-6)=3-x Solve for x

soldi70 [24.7K]

Answer:

x = 3

Step-by-step explanation:

$\sqrt{2x - 6} = 3 - x$

Square both sides of the equation

$2x - 6 = (3 - x)^{2} = 9 - 6x + x^{2} \\$

$x^{2} - 8x + 15 = 0\\$

(x - 3)(x - 5) = 0

x = 3 or 5

Now, you must always check your results because a result may not satisfy the original equation.

If x = 3, then $\sqrt{2x - 6} = \sqrt{2(3) - 6} = \sqrt{6 - 6} = \sqrt{0} = 0$ and 3 - x = 3 - 3 = 0

So 3 satisfies the original.

If x = 5, then $\sqrt{2(5) - 6} = \sqrt{10 - 6} = \sqrt{4} = 2$ , but 3 - x = 3 - 5 = -2. Therefore, 5 does NOT satisfy the original equation.

That means that x = 3 is the solution to the equation.

5 0

3 years ago

ANSWER CORRECTLY AND ILL MARK YOU AS THE BRAINLIEST

lana66690 [7]

Answer:

2/3

Step-by-step explanation:

im pretty sure that's the answer

6 0

3 years ago

Read 2 more answers

Pls help qrudkh r rural

sveta [45]

Answer:

your answer would be C.

Step-by-step explanation:

3 0

3 years ago

Can you help me with my math?

Dennis_Churaev [7]

Answer:

y = -3x - 1

Step-by-step explanation:

First find the slope then the Y-intercept

5 0

3 years ago

Solve the equation 3(2x+2)=3x-15 x=-7 x=-17/3 x=3 x=7

Nady [450]

3(2x+2)=3x-15

mutiply the bracket by 3

(3)(2x)(3)(2)= 6x+6

6x+6= 3x-15

move 3x to the other side

sign changes from +3x to -3x

6x-3x+6= 3x-3x-15

6x-3x+6= -15

3x+6= -15

move +6 to the other side

sign changes from +6 to -6

3x+6-6= -15-6

3x= -21

divide by 3 for both sides

3x/3= -21/3

x= -7

Answer: x= -7

4 0

3 years ago

Read 2 more answers