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3 years ago

How much is three more than the square of 8?

Mathematics

1 answer:

Dmitry_Shevchenko [17]3 years ago

6 0

<span>5.82842712475 or if you round it then it can be 5.8</span>

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What is −5x + 4 for x = −5

Triss [41]

Answer:

Step-by-step explanation:

Given

- 5x + 4 ← substitute x = - 5 into the expression

= - 5(- 5) + 4 = 25 + 4 = 29

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3 years ago

A skyscraper casts a shadow 200 feet long. If the angle of elevation of the sun is 49 , then the height of the skyscraper is ___

Nookie1986 [14]

Based on the information, you could find it using this formula :

Assuming the height of the skyscraper is coded as 'y'

Tan 49 = y/200

1.1504 = y/200

y = 230.8 Feet

hope this helps

7 0

3 years ago

Read 2 more answers

Abigail and Bailey wash dogs to make extra money. Abigail can wash all of the dogs in 5 hours. Bailey can wash all the dogs in 3

aleksandr82 [10.1K]

Answer: The correct option is (b) $1\dfrac{7}{8}~\textup{hours}.$

Step-by-step explanation: Given that Abigail and Bailey wash dogs to make extra money. Abigail can wash all of the dogs in 5 hours and Bailey can wash all the dogs in 3 hours.

We are to find the time taken by them if they wash the dogs together.

Abigail can wash the dogs in 5 hours.

So, in 1 hour, the fraction of the dogs Abigail can wash is given by

$\dfrac{1}{5}.$

Bailey can wash the dogs in 3 hours.

So, in 1 hour, the fraction of the dogs Bailey can wash is given by

$\dfrac{1}{3}.$

Hence, if they work together, then the fraction of the dogs that they wash in 1 hour is given by

$\dfrac{1}{5}+\dfrac{1}{3}=\dfrac{3+5}{15}=\dfrac{8}{15}.$

Therefore, the time taken by them to wash the dogs if they work together will be

$t=\dfrac{1}{\frac{8}{15}}=\dfrac{15}{8}=1\dfrac{7}{8}~\textup{hours}.$

Thus, option (b) is correct.

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3 years ago

A motor center carries out servicing of cars, which includes the replacement of parts.

nalin [4]

Answer:

1 box of spark plugs, 3 air filter boxes, 1 oil filter box, and 5 boxes of engine oil

Step-by-step explanation:

the max amount of services that can be done is about 20 per week, including the one on Saturday. so u just multiply the amount needed by the 20 possible services and check to see the amount that comes in each box, then get as many as needed

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3 years ago

Find each measure.<br> 11. m

Charra [1.4K]

Answer:

f mZDEC = (12x – 3), mZBCE = (7x – 26), and mzDAE = 72°, find each angle measure. 12X-3+7X-36 =180. 19x-29 = 180. 19x - 309. X = 11 m<DEC = 12cu1-3.Step-by-step explanation:

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3 years ago