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IrinaK [193]
3 years ago
8

What is the value of f(x) = –x2 – 2 when x = –1?

Mathematics
1 answer:
djyliett [7]3 years ago
8 0
0 because the -x cancels out the ones negative and 1 x 2 is 2. And 2-2 is 0
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Help with this math problem
marishachu [46]

see explanations

Step-by-step explanation:

Formula for mid-point is;

midpoint=((x_1+x_2)/2,(y_1+y_2)/2)

1.Given S(-3,4), U(-3,0) and T(5,0) then finding the mid-points

SU = [(-3+-3)/2,(4+0)/2] =(-3,2)

TU= [(-3+5)/2,(0+0)/2] =(1,0)

ST=[(-3+5)/2,(4+0)/2]=(1,2)

2.Mid-point formula for this case given W(-5,1) and Z(3,3) will be;

Midpoint = [ (x₁+x₂)/2,(y₁+y₂)/2]

Midpoint= [(-5+3)/2 ,(1+3)/2]

Midpoint=(1,2)

3. Finding the length of segments and the midpoint of the segments

Formula for length of segment, d, is given as;

For C(-1,5) and D(5,1)

d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2} \\\\d=\sqrt{(1-5)^2+(5--1)^2} =\sqrt{-4^2+6^2} =\sqrt{16+36} =\sqrt{52} =7.21

Midpoint of the segment CD will be

[(-1+5)/2,(5+1)/2] = (2,3)

For E (-3,-6) and F(5,0)

d=\sqrt{(0--6)^2+(5--3)^2} =\sqrt{6^2+8^2} =\sqrt{36+64} =\sqrt{100} =10

The midpoint for segment EF will be;

[(-3+5)/2 ,(-6+0)/2] =(1,-3)

For L(-4,4) and M(-1,-5)

d=\sqrt{(-5--4)^2+(-1-4)^2} \\d=\sqrt{-1^2+-5^2} \\\\d=\sqrt{1+25}=\sqrt{26} =5.1

Learn More

Midpoint of a segment :brainly.com/question/10424143

Distance of a segment :brainly.com/question/11591660

Keywords :midpoint, midpoint formula, segment length, line segment

#LearnwithBrainly

4 0
3 years ago
Arturo bought some belts online for $73. He used a coupon code to get a 20%
Oksanka [162]

Answer:

The processing fee will cost $8.76

Step-by-step explanation:

the price after the discount:

20% = 0.2

100% = 1

1 - 0.2 = 0.8

0.8

$73 • 0.8 = $58.4

cost of processing fee:

15% = 0.15

$58.4 • 0.15 = $8.76

7 0
2 years ago
Zach has a credit card with a $500 limit. He has used the card to pay $120.32 for groceries. How much more can Zach spend withou
matrenka [14]
500-120.32 = 379.68
4 0
2 years ago
3t + 35=6 Enter your answer in the box.
IrinaVladis [17]

3t+35−35=6−35

3t=−29

3t/3=-29/3

<u>Answer is t=-29/3</u>

Hope this helps!

8 0
2 years ago
Read 2 more answers
Are 5(2x-y) and 15x-5y equivalent expressions?
krek1111 [17]

No, they are not equivalent.

5(2x - y) = 10x - 5y and it is not equal to 15x - 5y.

(using distribution property)

6 0
2 years ago
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