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3 years ago

Solve the equation. 49+b^2=625.

1 answer:

7 0

49 + b^2 - 625

We want to isolate b on one side of the equation to get the value for b.

First, let's subtract both sides by 49

b^2 = 625 - 49

b^2 = 576

Now, let's take the square root of both sides.

b = √576

b = 24

That's your answer.

Have an awesome day! :)

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How do you solve x/3>-1

Goryan [66]

x/3>-1

Isolate the x. Multiply 3 to both sides

(x/3)3 > -1(3)

x > -1(3)

x > -3

x > -3 is your answer

hope this helps

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3 years ago

2 PONS

Margaret [11]

The right answer is of option A.

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8 0

4 years ago

We want to place a bench measuring 7.05 feet in the center of a platform that is 40.75 feet long

AnnyKZ [126]

40.75 - 7.05= 33.7
33.7 / 2 = 16.85
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5 0

3 years ago

The number of nails of a given length is normally distributed with a mean length of 5 in and a standard deviation of 0.03 find t

umka2103 [35]

Answer:

19 nails

Step-by-step explanation:

Let's first determine the z-score by using the formula:

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

Where x=5.03, μ=5, σ=0.03 and so:

$z=\frac{5.03-5}{0.03}=1$

We can now use a z-score table to determine that 1.00 is synonymous with 0.8413 meaning 84.13%. This means that 84.13% of the nails are less than or equal to 5.03 inches long. Therefore, since we know 100% = 1 in decimals we can determine that the length greater than 5.03 inches is 1-0.8413=0.1587. This means that 15.87% of the 120 nails are greater than 5.03 inches long.

Finally, we can determine how many nails are greater than 5.03 by determining what is 15.87% of 120 which is:

$120 \times 0.1587 \approx 19$

And so 19 out of the 120 nails are greater than 5.03 inches long.

5 0

3 years ago

What is the resulting polynomial when -7w² +13 is subtracted from -2w²+6w - 19?

maks197457 [2]

Answer:

5w^2 + 6w - 32

Step-by-step explanation:

Subtract as needed and combine like terms

(-2w^2 + 6w - 19) - (-7w^2 +13) dont forget to distribute the negative

so you get this:

-2w^2 + 7w^2 = 5w^2

-19 - 13 = - 32

your answer is 5w^2 + 6w - 32

hope this helps :)

8 0

2 years ago

Read 2 more answers