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MArishka [77]
2 years ago
13

Let f(x)=3x^2−2x+1. What is the value of f(−4)? −55 −49 41 57

Mathematics
1 answer:
dalvyx [7]2 years ago
3 0

Answer:

  • 57

Step-by-step explanation:

f(x)=3x^2-2x+1;f(-4)

Let x=-4

3(-4)^2-2(-4)+1

48-\left(-8\right)+1

57

~

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romanna [79]

Answer:if the notebooks cost 3.59 and pens cost 1.49, with x representing the notebooks and y representing the number of pens and an amount of $13, the inequality would be written as 3.59x+1.49y13

Step-by-step explanation:

3 0
3 years ago
HELP FAST NOT SURE WHAT TO DO
meriva

Answer: It’d be C. 1462


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3 0
3 years ago
Find an equation of the line perpendicular to the graph of 14x-7y=8 that passing through the point at (-2,5).
MAXImum [283]

Answer:

2x + 4y = 16.

Step-by-step explanation:

14x - 7y = 8

Convert to slope-intercept form:

-7y = -14x + 8

y = 2x - 8/7

The slope is 2 so the line perpendicular to it has a slope of -1/2, so we have:

y = 1/2x + c

This line passes through the point (-2, 5) so:

5 = -1/2* (-2) + c

5 = 1 + c

c = 5 - 1 = 4

So our equation is y = -1/2x + 4.

Convert to standard from

4y = -2x + 16

2x + 4y = 16.

7 0
3 years ago
Is the square root of 81 9?I think it is.
TEA [102]
Yes, because 9*9 is 81
5 0
3 years ago
Let angle 1 and angle 2 be complementary. If má 1 = 4x +3 and m42 = x + 2, find the measure
Andre45 [30]

Answer:

m∠1 = 71°

Step-by-step explanation:

Angle 1 and 2 are complementary, meaning the measures of the two angles add up to 90°.

Set the measures of the two angles equal to 90°

(4x+3)+(x+2)=90\\

Combine like terms

5x+5=90

Solve for x

x=17

Plug the value of 'x' back into the given equation for the measure of angle 1

m

m∠1 = 71°

6 0
3 years ago
Read 2 more answers
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