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sergey [27]
3 years ago
7

Factor the expression x2 - 49. A. 7(x² – 7) B. 7.(2-7) C. 2+7(2-7) D. (x + 7)(x-7)

Mathematics
1 answer:
NISA [10]3 years ago
6 0
X^2 - 49 = (x + 7)(x - 7) = x^2 - 7x + 7x = 49 = x^2 - 49
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Which of the following best describes rotational symmetry
Gala2k [10]

Answer: B

Step-by-step explanation:

A best describes the quality of symmetry, not specifically rotational symmetry.

C applies to that of A.

D applies to flipping an image across an axis.

B specifically outlines the symmetry of an object when rotated, thus B would be the most precise answer.

7 0
3 years ago
A stores balance sheet represents the amounts customer owe as negative numbers and credits to customers as positive numbers.
Snowcat [4.5K]

The opposite of each customer's balance is obtained by changing its sign.

They are given below:

Girardi 85.23

Lewis - 20.44

Stien : 116.33

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Wenner : 9.85


4 0
3 years ago
4/3⋅92−29=A cylindrical-shaped water tank has a diameter of 4 feet and is 12 feet tall. Which is closest to the volume of this t
Nookie1986 [14]

Answer:

Actual volume: 150.8

Step-by-step explanation:

the equation to find the volume of a cylinder is:

V= pi (r)^2 (h)

r= radius

h= height

To get the radius, you divide the diameter by 2.

when you plug in the numbers is looks like this:

V= pi (2)^2 (12)

you'll get 150.8 ft^3

I'm not really sure which volume would be the closest, but it should be around the answer I provided

3 0
3 years ago
Shawna can paint a fence in 8 hours. Kevin can paint the same fence in 4 hours. How long will it take them working together? Sho
saw5 [17]

Answer: 2.66 hours

Step-by-step explanation:

Shawana can paint a fence in 8hours which means in one hour she can paint 1/8 of a fence.

Kevin can paint the same fence in 4 hours, so in one hour he can paint 1/4 of the fence.

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Total hours for painting is 3/8 or 2.66 hours

6 0
3 years ago
Read 2 more answers
Pete's monthly housing budget is $2,250. His monthly costs are $215.75 for insurance, $143.50 for utilities, and $273 for taxes.
Afina-wow [57]

Answer:

Option B.  house B; monthly payment of $1,550.89 is the correct answer.

Step-by-step explanation:

In order to calculate the highest payment Pete can afford we have to subtract his expenses from his housing budget.

Given

Total housing budget = $2250

Monthly costs = $215.75

Utilities = $143.50

Taxes = $273

First all expenses can be added together to subtract from the housing budget.

So

Monthly\ costs = Insurance\ +\ Utilities\ +\ taxes\\ = \$215.75 + \$143.50 + \$273\\= \$632.25

Now the total monthly cost will be subtracted from housing budget.

Amount\ for\ monthly\ payment = Housing\ budget - Monthly\ Expenses\\=\$2250\ -\ \$632.25\\=\$1617.75

Hence, he saves $1617.75 for monthly payment.

Looking at the options, C and D will be ruled out as both the quantities are greater than 1617.75

Option A and B both are smaller than 1617.75 but as $1,550.89>$1,327.18, Option B is the highest monthly payment Pete can afford.

Hence,

Option B.  house B; monthly payment of $1,550.89 is the correct answer.

6 0
4 years ago
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