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3 years ago

How do you do 4x-6=22 and plz show how you got it

2 answers:

8 0

The original equation is 4x - 6 = 22. We can solve this by first isolating x, and that can be done by initially adding 6 to both sides. After doing this, we are left with 4x = 28. Now, we can simply divide both sides by 4, giving us an x value of x = 7. Therefore, the answer to your problem is x = 7. Hope this helped and have a great Halloween!

notka56 [123]3 years ago

6 0

Well, here you are trying to get x by itself so:

add 6 to both sides-
4x = 28

divide by 4 from both sides-
4x /4 = 28 /4

So, x = 7

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A first number plus twice a second number is 14. Twice the first number plus the second totals 10. Find the numbers.

Nookie1986 [14]

Answer:

first number(x) = 2 second number(y)= 6

Step-by-step explanation:

This is an example of a simultaneous equation.

First write this word problem as equations, where x is the "first number" that you've mentioned and y is the "second number".

x + 2y = 14 (equation 1)

2x + y = 10 (equation 2)

This is solved using the elimination method.

We need to make one of the coefficients the same - in this case we can make y the same. In order to do this we need to multiply equation 2 by 2, so that y becomes 2y.

2x + y = 10 MULTIPLY BY 2

4x + 2y = 20 (this is now our new equation 2 with the same y coefficient)

Now subtract equation 1 from equation 2.

4x - x + 2y - 2y = 20 - 14 (2y cancels out here)

3x = 6

x = 2

Now we substitute our x value into equation 1 to find the value of y.

2 + 2y = 14

2y = 12

y = 6

Hope this has answered your question.

6 0

3 years ago

Read 2 more answers

Write and solve a proportion to answer the question.

Reptile [31]

Answer:

Step-by-step explanation:

p/100×25=12

p/4=12

(p/4)×4=12×4

p=48

I hope this makes sense

8 0

3 years ago

Tara and Edith share a sum of money in the ratio 13 : 12

svlad2 [7]

Answer:

She receives 108.33% ( or $108.33)

Step-by-step explanation:

Tara receives $108.33 because 13/12 into a percentage =108 times 100

which = 108.33.That's all there is to it! Hope you have a great day.

5 0

2 years ago

What does .30 meters equal to

Maslowich

30 CM
0.984252 FT
300.0000096 MM

3 0

3 years ago

The Insure.com website reports that the mean annual premium for automobile insurance in the United States was $1,503 in March 20

stira [4]

Answer:

a) Option A)

$H_{0}: \mu \geq 1503\\H_A: \mu < 1503$

b) Point estimate of difference = -78

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $1,503

Sample mean, $\bar{x}$ = $1,425

Sample size, n = 25

Sample standard deviation, s = $160

We have to carry a hypothesis test that the mean annual premium in Pennsylvania is lower than the national mean annual premium.

a) First, we design the null and the alternate hypothesis

$H_{0}: \mu \geq 1503\text{ dollars}\\H_A: \mu < 1503\text{ dollars}$

b) Point estimate of the difference between the mean annual premium in Pennsylvania and the national mean

Point estimate of difference =

Mean annual premium in Pennsylvania - National mean

$\text{Point estimate} = \bar{x} - \mu = 1425 - 1503 = -78$

Thus,

Point estimate of difference = -78

5 0

3 years ago