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Travka [436]
3 years ago
13

F(x) = x^2- 51 when f (-7)

Mathematics
1 answer:
Elena-2011 [213]3 years ago
3 0

Answer:

f(x)= -2

Step-by-step explanation:

f(x) = x^2- 51

        -7^2-51

          49-51

            -2

f(x)= -2

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write an equation of a line passing thru the point (-4,-11) and perpendicular to the line 4x+5y= -45​
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Answer:

y = 5/4x - 6

Step-by-step explanation:

First, put 4x + 5y= -45​ in y = mx + b form

4x + 5y= -45​

5y = -4x - 45

y = -4/5x - 9

So, the slope is -4/5. Perpendicular lines have a opposite reciprocal slope, so the line's slope will be 5/4

To find the equation of the perpendicular line, plug in the slope and given point into y = mx + b, and solve for b

y = mx + b

-11 = 5/4(-4) + b

-11 = -5 + b

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Plug in b and the slope into y = mx + b

y = 5/4x - 6

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3 years ago
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The chorus has 35 members. Which expression represents the number of ways a group of 6 members can be chosen to do a special per
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Snowcat [4.5K]

The value of the function  (f - g)(x) is x² + 3x + 5

<h3>How to solve functions?</h3>

A function is defined as a relation between a set of inputs having one output each.

In a simpler terms, a function relates input and output.

Therefore, let's solve the function (f - g)(x)

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Therefore,

(f - g)(x) = x² + 3x + 5

learn more on function here: brainly.com/question/15607023

#SPJ1

7 0
1 year ago
Does every line have a slope and a y-intercept? Explain
motikmotik

Answer:

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