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olga nikolaevna [1]
3 years ago
5

Given h(x) = 4x2 - 5x + 4 find h(-5).

Mathematics
2 answers:
MrRissso [65]3 years ago
7 0

9514 1404 393

Answer:

  h(-5) = 129

Step-by-step explanation:

Put -5 where x is and do the arithmetic.

  h(-5) = 4(-5)² -5(-5) +4

  h(-5) = 4(25) +25 +4 = 129

Citrus2011 [14]3 years ago
5 0

Answer:

answer is 129

Step-by-step explanation:

4(-5)^2 -5(-5) +4 =129

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An extension ladder leans agintst a biulding, making a 75 degree angle of elevation with the ground. The base of the ladder is 8
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For this problem, you're going to need to use trig. More specifically, you need to use the tangent function:

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3 years ago
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Please help i really don’t understand what to do for this problem
Ipatiy [6.2K]

Answer:

Slope = 6.25

Y-intercept = 8.50 or 8.5

Equation: y = 6.25x + 8.50 or y = 6.25x + 8.5

Proportional = No

Step-by-step explanation:

The slope is also the rate of change and the question states that Kayla earned $6.25 an hour. So your slope also known as rate of change is 6.25.

Your y-intercept is the starting point and in the question it states that Kayla received $8.50 in tips. So your y-intercept also known as starting point is $8.50.

The Equation is meant to be set-up like this:

y = mx + b which is y = slope + y-intercept

Since $6.25 is our slope and $8.50 is our y-intercept lets arrange it:

y = 6.25x + 8.50

A proportional graph is a graph that has the line drawn from the equation going through the origin which is (0,0) the middle intersection between the y and x line. So with that being said the graph is not proportional because it doesn't go through the origin.

How do I know this?

I know this because the starting point in the equation that I graph is 8.50 or 8.5 and it does not start from (0,0) or 0 so it does not cross the (0,0) point.  

4 0
3 years ago
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Reika [66]

Answer:

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Step-by-step explanation:

This is a system of equations:

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Now, substitute P for 3 in the first equation.

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Answer:

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