What is the range of the discrete finite function?

Which describes the first step in solving the equation 4x - 7 = -15?

GalinKa [24]

Answer:

Add 7 to both sides

Step-by-step explanation:

You would need to add 7 to both sides to cancel out the 7 on the right side of the equation to get x one step closer to being by itself.

Then you would get 4x = -8.

Next divide by 4 on both sides to get x by itself so do the inverse operation of what 4 was doing to x.

x = -2

7 0

3 years ago

What is the sum ? (2x^2-4x+1)+(5x+x^2-1)

Ipatiy [6.2K]

$Hello$ $There!$

The answer is...

$3x^2+x$

HERE'S A EXPLANATION!

$2x^2-4x+1+5x+x^2-1$

$=2x^2+-4x+1+5x+x^2+-1$

Combine these like terms!

$=2x^2+-4x+1+5x+x^2+-1$

$=(2x^2+x^2)+(-4x+5x)+(1+-1)$

$=3x^2+x$

ANSWER!

$=3x^2+x$

Hopefully, this helps you!!

$AnimeVines$

6 0

3 years ago

A bag contains five red marbles, two orange marbles, one yellow marble, and two green marbles. Two marbles are drawn from the ba

Anvisha [2.4K]

The answer is

$\frac{2}{10} \div \frac{2}{9} = .04444$
the probability of choosing an orange marble is 2/10 because there are 2 orange marbles and 10 marbles in total.

the probability of choosing a green marble is 2/9 because there are 2 green marbles and 9 marbles in total (because you already picked one marble out of the bag thereby decreasing the total number of marbles in all).

when you multiply the probability of these two events you get .04444 which is the probability of both events happening simultaneously.

4 0

3 years ago

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A company produces refrigerators for beer kegs. The refrigerators are supposed to maintain a mean temperature of 43°F, ideal for

Deffense [45]

Answer:

C) Fail to reject the claim that the mean temperature is equal to 43°F when it is actually different from 43°F.

Options:

A) Fail to reject the claim that the mean temperature is equal to 43°F when it is actually 43°F.

B) Reject the claim that the mean temperature is equal to 43°F when it is actually 43°F.

C) Fail to reject the claim that the mean temperature is equal to 43°F when it is actually different from 43°F.

D) Reject the claim that the mean temperature is equal to 43°F when it is actually different from 43°F.

Explanation:

The null hypothesis H0: µ=43°F (a true mean temperature maintained by refrigerator is equal to 43°)

The alternative hypothesis Ha: µ<>43 (a true mean temperature maintained by refrigerator is not equal to 43).

A type II error does not reject null hypothesis H0 when it is false. Therefore, the type II error for the test fails to reject the claim that the mean temperature is equal to 43°F when it is actually different from 43°F.

3 0

3 years ago

Read the numbers and decide what the next number should be. 20 30 40 50 60 70

goldenfox [79]

80 Because the numbers are going up by 10

4 0

4 years ago

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