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timofeeve [1]
3 years ago
11

Why can a variable be used to represent a number

Mathematics
1 answer:
irina [24]3 years ago
6 0

Variables can be used to represent unknown numbers in a equation or expression that you will later find out what they are
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If f(x) = 4x + 3x2 + 1, then what is the remainder when f(x)<br> is divided by X -2?
Bezzdna [24]

Answer:

remainder = 21

Step-by-step explanation:

If f(x) is divided by (x - h) then the remainder is f(h)

Here f(x) is divided by (x - 2) with h = 2 , then remainder is

f(2) = 4(2) + 3(2)² + 1 = 8 + 3(4) + 1 = 8 + 12 + 1 = 21

5 0
3 years ago
Albert's hourly pay is $8.10. He has an hourly pay of $12.15 when he works more than 40 hours. He worked 45 hours last week. Wha
Sedaia [141]

Answer:

$384.75

Step-by-step explanation:

Albert's hourly pay is $8.10

When he works for more than 40 hours, his hourly pay will increase to $12.15.

Last week, Albert worked for 45 hours, his hourly pay would be:

First 40 hours = $8.10 * 40 = $324

Remaining 5 hours =

$12.15 * 5 = $60.75

Albert gross pay for this period will be calculated as:

$324 + $60.75 = $384.75

Therefore, Albert gross pay for this period = $384.75

3 0
3 years ago
you are purchasing a house 12 years from now the estimated purchase price is $171,600 you want to make a 20% down payment how mu
IRINA_888 [86]

Answer:The answer would be $238.33 a month

7 0
2 years ago
Name a pair of vertical angles, a straight angle, and two acute angles<br> other than
malfutka [58]

Step-by-step explanation:

While there are no examples available, there is the room to understand each angle type you listed, vertical angles are angles that are opposite from each other, and they are congruent (they have the same angle in degrees) now, imagine that for vertical angles, they are in an X top and bottom are equal, and the two sides are equal. For a straight angle, that is usually two angles that are right angles (90 degrees) back to back, meaning when you add 90 and 90 degrees together, you get a straight line or a 180 degree angle. An example of an acute angle is any angle less than 90 degrees, that is a real number, so imagine 25, 40, and 60 as all acute angles.

Hope this helps you identify them in your problem!

3 0
3 years ago
Divide the following by hand (long division). (Show your work )<br><br> 585 ÷ 13
slamgirl [31]

Answer: 45

Step-by-step explanation: To divide this start with finding how many times 585 goes into 13 which is 0. I put a picture for you to look at.

5 0
3 years ago
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