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Genrish500 [490]
2 years ago
6

Given u = ⟨2, –8⟩ and v = ⟨8, –2⟩, what is u · v?

Mathematics
2 answers:
emmasim [6.3K]2 years ago
8 0

Answer:

c

Step-by-step explanation:

Juliette [100K]2 years ago
6 0

Answer:

I think it's C. 0

Step-by-step explanation:

On Edge

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Using the grouping method to factor the polynomial below completely. x^3+2x^2+4x+8
Ivenika [448]

Answer:  (x+2)(x^2+4)

Step-by-step explanation:

x^3+2x^2+4x+8

(x^3+2x^2)+(4x+8)\\x^2(x+2)+4(x+2)

(x+2)(x^2+4)

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3 years ago
What is the reflection image of R across the y-axis?
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You only need to inverse your x coordinate.

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lisov135 [29]

Answer:

-8x im pretty sure!!

Step-by-step explanation:

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3 years ago
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What is the value of -3 2/3 +1/3
emmainna [20.7K]

Exact Form:

−10/3

Decimal Form:

−3.3...

Mixed Number Form:

−3 1/3

4 0
2 years ago
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The axis of symmetry for the graph of the function is f(x) = x2 + bx + 10 is x = 6. What is the value of b?
joja [24]

Answer:

b=-12

Step-by-step explanation:

we have

f(x)=x^{2}+bx+10

we know that

The equation of a vertical parabola into vertex form is equal to

y=a(x-h)^{2} +k

where

(h,k) is the vertex of the parabola

and the axis of symmetry is equal to x=h

In this problem we have the axis of symmetry x=6

so

the x-coordinate of the vertex is equal to 6  

therefore

For x=6+1=7 -----> one unit to the right of the vertex

Find the value of f(7)

f(7)=7^{2}+b(7)+10

f(7)=59+7b

For x=6-1=5 -----> one unit to the left of the vertex

Find the value of f(5)

f(5)=5^{2}+b(5)+10

f(5)=35+5b

Remember that

f(5)=f(7) ------> the x-coordinates are at the same distance from the axis of symmetry

so

59+7b=35+5b ------> solve for b

7b-5b=35-59

2b=-24

b=-12


3 0
2 years ago
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