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adell [148]
3 years ago
8

Is 3x = x + 8 true?​

Mathematics
2 answers:
Mamont248 [21]3 years ago
6 0

Answer:  The answer to the equation is : x= 4 (Friend me)

Step-by-step explanation: This is a two-step equation. Therefore, you have two steps lol. The first step is combining like terms. So, the simplified equation would be 2x=8. Then the last step would be dividing. You'd divide 2x by 2 and 8 by 2, which would give you x=4!

ANEK [815]3 years ago
5 0

Answer:

So 3x = x +8 is your equation

We adjust the equation to isolate the x and we end up with 2x = 8

We have to isolate the x even more to turn it into x = 4.

So our final answer is x = 4

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How do -11.5 and -9.5 compare?
DIA [1.3K]

Answer:

-9.5 is larger by 2 units

Step-by-step explanation:

-9.5 - (-11.5)

= -9.5 + 11.5

= 2.

5 0
3 years ago
What quadratic function does the graph represent?
nekit [7.7K]

Answer:

f(x)=-\frac{1}{3}(x-2)^2+4,

Step-by-step explanation:

The function of the graph can be written in the vertex form as

f(x)=a(x-h)^2+k, where V(h,k)=V(2,4) is the vertex of the quadratic function.

We substitute the value to obtain;

f(x)=a(x-2)^2+4,

The point (5,1) lies on the graph so we use it to determine the value of a.

1=a(5-2)^2+4,

1-4=a(3)^2,

-3=9a,

a=-\frac{1}{3}

The required equation is

f(x)=-\frac{1}{3}(x-2)^2+4,

5 0
3 years ago
Please help! Will mark brainiest!!!!
brilliants [131]

Answer:

This is the alternate exterior angle theorem

Step-by-step explanation:

This is because angle 2 and angle 7 are in the <u>outer</u> part of each side of opposite lines

8 0
3 years ago
Suppose the mean height for adult males in the U.S. is about 70 inches and the standard deviation is about 3 inches. Assume men’
nlexa [21]

Question options :

a. They should be between 64 and 76 inches tall.

b. They should be close to the height that is 95% of the mean. That is, 66.5 inches, plus or minus 2 standard deviations.

c. They should be at or below the 95th percentile, which is 74.92 inches.

d. None of the above.

Answer: a. They should be between 64 and 76 inches tall.

Step-by-step explanation:

Given the following :

Assume men's height follow a normal curve ; and :

Mean height = 70 inches

Standard deviation= 3 inches

According to the empirical rule ;

Assuming a normal distribution with x being random variables ;

About 68% of x-values lie between -1 to 1 standard deviation of the mean. With about 95% of the x values lying between - 2 and +2 standard deviation of mean. With 99.7% falling between - 3 to 3 standard deviations from the mean.

Using the empirical rule :

95% will fall between + or - 2 standard deviation of the mean.

Lower limit = - 2(3) = - 6

Upper limit = 2(3) = 6

(-6+mean) and (+6+ mean)

(-6 + 70) and (6+70)

64 and 76

8 0
3 years ago
Tori has a bag with 3 blue marbles, 5 red marbles and 1 yellow marble. She chooses a marble at random, returns it to the bag, an
Damm [24]

Answer:

3-    5-   1

^      ^     ^

1 -5, 1,3   3,5

Step-by-step explanation:

5 0
3 years ago
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