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3 years ago

Evaluate 10x2y–2 for x = –1 and y = –2.

Mathematics

1 answer:

Paul [167]3 years ago

4 0

Answer:

-16

Step-by-step explanation:

10 x -1= -10

2 x -2= -4

-10-4= -14

-14-2= -16

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MAXImum [283]

The last one is correct

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3 years ago

a stack of 4 books weigh 5.2 pounds if each book weighs the same amount then how much does each book weigh

statuscvo [17]

Answer:

1.3 pounds

Step-by-step explanation:

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3 years ago

Find cot theta if csc theta = sqrt17/4 and tan theta >0.

Lorico [155]

Answer:

$tan \theta = 4$

Step-by-step explanation:

We know that

$cosec \theta = \frac{hypotenuse }{opposite }$

Given :

$cosec \theta =\frac{\sqrt{17}}{4}\\$

So 4 is the opposite side of theta.

$tan \theta = \frac{opposite}{adjacent}$

We use the Pythagorean theorem to find for the adjacent side.

$a = \sqrt{17 - 4^2} = \sqrt{17-16} = 1$

$Therefore, \ tan \theta = \frac{4}{1} = 4$

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3 years ago

A group of 4 friends went out for a special dinner. the items they ordered are listed below

Bond [772]

<h3>My friends the answer is 3.</h3>

24.95 + 18.96 + 17.55 + 23.14 + 12.00 + 96.60

4 divided by 12 is 3

3 0

2 years ago

Freddie is walking for a charity at a constant rate. After two hours, Freddie has walked 4 miles. At 4 hours, he had walked 8 mi

lesantik [10]

Answer:

Freddie would have walked 25 miles after 12 and a half hours.

Step-by-step explanation:

Given that Freddie is walking at a constant speed, and after 2 hours he walked 4 miles, while after 4 hours he walked 8 miles, to determine how long he walked 25 miles, the following calculation must be performed:

4/2 = Miles per hour

2 miles per hour

2X = Y

2X = 25

X = 25/2

X = 12.5

Therefore, Freddie would have walked 25 miles after 12 and a half hours.

8 0

2 years ago