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2 years ago

Two equivalent expressions for 7x.

Mathematics

2 answers:

Alona [7]2 years ago

8 0

Rtgvdtghhvcdthhvh sorry phone glItChiNg

scoundrel [369]2 years ago

6 0

Answer:

Combine any like terms on each side of the equation: x-terms with x-terms and constants with constants. Arrange the terms in the same order, usually x-term before constants. If all of the terms in the two expressions are identical, then the two expressions are equivalent.

Step-by-step explanation:

Instructions! If you still dont get it Visit KhanAcademy.com! ^w^

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What numbers multiplied equal to -4 and add up to 8

crimeas [40]

Answer:

scdeceece

Step-by-step explanation:

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3 years ago

What is the gcf of 96^5 and64^2

Arada [10]

8 is the gcf .........

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3 years ago

The sum of two numbers is equal to 63 and their differences are 12. Find the numbers.

icang [17]

Answer:

13.5

Step-by-step explanation:

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3 years ago

The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what

harkovskaia [24]

Answer:

78.88%

Step-by-step explanation:

We have been given that

$\mu=25,\sigma=4,x_1=20,x_2=30$

The z-score formula is given by

$z-\text{score}=\frac{x-\mu}{\sigma}$

For $x_1=20$

$z_1=\frac{20-25}{4}\\\\z_1=-1.25$

For $x_2=30$

$z_2=\frac{30-25}{4}\\\\z_2=1.25$

Now, we find the corresponding probability from the standard z score table.

For the z score -1.25, we have the probability 0.1056

For the z score 1.25, we have the probability 0.8944

Therefore, the percent of the trees that are between 20 and 30 years old is given by

0.8944 - 0.1056

= 0.7888

=78.88%

6 0

3 years ago

Read 2 more answers

Two-fifths of one less than a number is less than three-fifths of one more than that number. What numbers are in the solution se

yaroslaw [1]

2/5 * (n - 1) < 3/5 * (n + 1)
2/5 * n - 2/5 < 3/5 * n + 3/5
- 2/5 - 3/5 < 3/5 * n - 2/5 * n
- 5/5 < 1/5 * n
- 1 < 1/5 * n /*5
- 5 < n
n > - 5

n = x

The correct result would be B) <span>x > - 5.</span>

7 0

3 years ago

Read 2 more answers