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denis23 [38]
2 years ago
5

Can you please help me:)

Mathematics
1 answer:
svp [43]2 years ago
4 0

Answer:

c

Step-by-step explanation:

yes c

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Aaron wants to mulch his garden. His garden is x^2+18x+81 ft^2 One bag of mulch covers x^2-81 ft^2 . Divide the expressions and
blsea [12.9K]

Answer:

Step-by-step explanation:

Given

Garden: x^2+18x+81

One Bag: x^2 - 81

Requires

Determine the number of bags to cover the whole garden

This is calculated as thus;

Bags = \frac{x^2+18x+81}{x^2 - 81}

Expand the numerator

Bags = \frac{x^2+9x+9x+81}{x^2 - 81}

Bags = \frac{x(x+9)+9(x+9)}{x^2 - 81}

Bags = \frac{(x+9)(x+9)}{x^2 - 81}

Express 81 as 9²

Bags = \frac{(x+9)(x+9)}{x^2 - 9\²}

Evaluate as difference of two squares

Bags = \frac{(x+9)(x+9)}{(x - 9)(x+9)}

Bags = \frac{(x+9)}{(x - 9)}

Hence, the number of bags is Bags = \frac{(x+9)}{(x - 9)}

3 0
3 years ago
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 1083 and x=550 who said
Zigmanuir [339]

Step-by-step explanation:

p = x / n

p = 550 / 1083

p = 0.5078

5 0
3 years ago
Use properties to rewrite the expression to be easier to solve explain (13+4.63)+7.4
Nuetrik [128]

Answer

(13+4) + (4.63+7.4)

Step-by-step explanation:

Use the commutative property to put the decimals together. Use the associative property to group the decimals and numbers together as shown in the answer.

8 0
3 years ago
105,159 rounded to the nearest ten thousand
IceJOKER [234]
If you look at the hundereds place you see it is under the number 5 which means you would drop 1, 5, & 9 and the answer would be 105,000. If the number was above 5 you would have had to make it 106,000.

7 0
3 years ago
Find the exact value of the trigonometric expression given cos (22.5 ).
Digiron [165]
Use the identity   cos^2 (a/2) =  1/2 (1 + cos a) so

cos^ 2 22.5  = cos^2 (45/2)  = 1/2 ( 1 + cos 45)  =  1/2(1 + sqrt2/ 2)4 = 1/2 + sqrt2/4

cos 22.5  =  sqrt ( 1/2 + sqrt2/4)  Answer
3 0
2 years ago
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