All categories

3 years ago

5(x-10)=30-15x Solve for x

Mathematics

2 answers:

Tamiku [17]3 years ago

6 0

Hello!

Answer:

$\boxed{x=4}$

The answer should have a positive sign.

Step-by-step explanation:

First, you do is expand.

5(x-10)=5x-50

5x-50=30-15x

Then add by 50 both sides of an equation.

5x-50+50=30-15x+50

Simplify.

5x=-15x+80

Next add 15x both sides of an equation.

5x+15=-15x+80+15x

Simplify.

20x=80

Divide by 20 both sides of an equation.

20x/20=80/20

Simplify and solve.

80/20=4

$\boxed{x=4}$ , which is our final answer.

Hope this helps you!

Have a nice day! :)

Thanks!

Arte-miy333 [17]3 years ago

5 0

Answer:

x = 4

Step-by-step explanation:

This equation has 3 terms. Divide all of them by 5 to simplify the equation.

We get:

x - 10 = 6 - 3x

Combining the x terms, we get 4x - 10 = 6, or 4x = 16, or x = 4.

You might be interested in

Solve for x in the equation X^2 - 8X + 41= 0

BaLLatris [955]

Answer:

The equation has two solutions for x:

x₁ = (8 + 10i)/2

x₂ = (8 - 10i)/2

Step-by-step explanation:

Let's use the quadratic formula for solving for x in the equation:

X^2 - 8X + 41= 0

x² - 8x + 41 = 0

Let's recall that the quadratic formula is:

x = -b +/- (√b² - 4ac)/2a

Replacing with the real values, we have:

x = 8 +/- (√-8² - 4 * 1 * 41)/2 * 1

x = 8 +/- (√64 - 164)/2

x = 8 +/- (√-100)/2

x = 8 +/- (√-1 *100)/2

Let's recall that √-1 = i

x = 8 +/- 10i/2

x₁ = (8 + 10i)/2

x₂ = (8 - 10i)/2

8 0

3 years ago

What is the quotient of 5,256 ÷ 52?

denis23 [38]

Answer:

5,256 - 4 = 5,252 = 52 x 101 or 101.0769230769231

Step-by-step explanation:

3 0

3 years ago

What is the area of the donut?

mrs_skeptik [129]

6 x 4=24 so the area of the donut 24 which is the answer to the question

8 0

2 years ago

The scores on a quiz are normally distributed. The mean of the quiz is 93 and the standard deviation is 4.2. By using the Empiri

xz_007 [3.2K]

Answer:

any score that lies between 88.8 and 97.2 is within one std. dev. of the mean

Step-by-step explanation:

One std. dev. above the mean would be 93 + 4.2, or 97.2. One std. dev. below the mean would be 93 - 4.2, or 88.8.

So: any score that lies between 88.8 and 97.2 is within one std. dev. of the mean.

6 0

3 years ago

A group of 40 bowlers showed that their average score was 192. Assume the population standard deviation is 8. Find the 95% confi

kodGreya [7K]

Answer:

$CI=189.5,194.5$

Step-by-step explanation:

From the question we are told that:

Sample size $n=40$

Mean $\=x =192$

Standard deviation $\sigma=8$

Significance Level $\alpha=0.05$

From table

Critical Value of $Z=1.96$

Generally the equation for momentum is mathematically given by

$CI =\=x \pm z_(a/2) \frac{\sigma}{\sqrt{n}}$

$CI =192 \pm 1.96 \frac{8}{\sqrt{40}}$

$CI=192 \pm 2.479$

$CI=189.5,194.5$

5 0

3 years ago