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evablogger [386]
3 years ago
8

If some one could help me with these three questions I will be stoked!!!please please help me my teacher didn’t walk us through

this at all

Mathematics
1 answer:
salantis [7]3 years ago
5 0

17) replace the given number for "x" and evaluate

a) x² + 2x + 1   ; when x = 3

  3² + 2(3) + 1

= 9 + 6 + 1

= 16

b) x² + 2x + 1   ; when x = -4

  (-4)² + 2(-4) + 1

= 16 - 8 + 1

= 9

c) x² + 2x + 1   ; when x = 3

  (-22.872)² + 2(-22.872) + 1

= 523.128384 - 45.744 + 1

= 478.384384

18) The dependent variable is affected by the other variable and is the "output"   The independent variable is the input.

a) y = 3x - 5;    "x" is the independent variable

b) the time of day is the independent variable  (you would input the time of day to calculate the temperature).

19) Let the x-axis represent the length of the lumber cut off and the y-axis represent the length of the lumber remaining.

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their down payment is 30%

Step-by-step explanation:

4 0
3 years ago
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What is the constant term for -2a3b2+5ab5+7b4+8
stiv31 [10]

Hey there!

<u>Constant terms</u> are the terms where no variables are there (only the constant, i.e, the number). So, here the term <em><u>8</u></em><em><u> </u></em><em><u> </u></em>is the constant term because it doesn't have any variables.

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2 years ago
-3x+6/2 &lt;12 there is no divison sign so its -3x+6 over 2
Vaselesa [24]

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6 0
3 years ago
Maria would like to leave a tip (t) of at least 15% of her dinner bill (b). Which inequality best could be used to find the amou
mr_godi [17]
First let's define the variables of the problem:
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 b: dinner bill.
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3 0
3 years ago
What is the exact volume of the cylinder?
enyata [817]

Answer:

Step-by-step explanation:

The formula for the volume of a cylinder is V = πr²h.  

Here, r = 5cm, and h = 15 cm, and so the volume is:

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