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Anna11 [10]
4 years ago
5

I need helppppp........

Mathematics
1 answer:
grin007 [14]4 years ago
7 0

Answer:

B

Step-by-step explanation:

To do this, you need to complete the square.

y=-2x^2-8x-13 \\\\y=-2(x^2+4x)-13 \\\\y=-2(x^2+4x+4)+8-13 \\\\y=-2(x+2)^2-5

Therefore, the correct answer is choice B. Hope this helps!

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Evaluate the following for a = -20, b = 30, c = 5 | 2a | - b | bc | - | ac |
padilas [110]
The answer to the question

4 0
4 years ago
Evaluate 156 divided by(8x+14)when x=8 i am only in 6th grade be nice
VikaD [51]
So first we have to find out what the bottom number is so

8x+14
subsitute 8 for x
8(8)+14
64+14
78

so 156/78
an easy way to do this is to factor it out and find the 'ones' like 4/8=1/2 times 4/4 (4/4=1 and can be canceled out)
*=times
156=2*2*3*13
78=2*3*13

so (2*2*3*13)/(2*3*13)
2/1 times (2*3*13)/(2*3*13)
we can cross out the (2*3*13) and get
2 as the answer
6 0
3 years ago
Read 2 more answers
Can someone help with this plss:(((((((
svet-max [94.6K]

Answer:

33 = r

Step-by-step explanation:

The circumference is given by

C = 2 * pi *r

207.24 = 2 * 3.14 *r

207.24 = 6.28 *r

Divide each side by 6.28

207.24/6.28 = 6.28 r /6.28

33 = r

6 0
3 years ago
Does anyone know how to do this?
Shalnov [3]

Answer:

  • 8

Step-by-step explanation:

8 multiplied by .75 = 6 which is 25 percent off.

8 0
3 years ago
write the slope intercept equation. the graph of f passes through (-6,4) and is perpendicular to the line that has an x-intercep
Nimfa-mama [501]

Answer:

y = -\frac{1}{3} x + 2

Step-by-step explanation:

The slope of the line that has an x intercept of (2,0) and y-intercept of (0,-6) is:

Slope(s) = Change in y ÷ change in x

s = \frac{0 - -6}{2 - 0} = 3

The slope of the perpendicular line to this line with slope of 3 has to have a slope of -1 ÷ 3 = -\frac{1}{3}

Reason: The product of slopes of lines perpendicular to each other have to be -1

So the slope of the perpendicular line that passes through (-6,4) is -\frac{1}{3}

As mentioned earlier, we derive a slope of a line by dividing the change in y by the change in x

Taking another point (x,y) on the line,

-\frac{1}{3} = \frac{y - 4}{x - -6}

-\frac{1}{3} = \frac{y - 4}{x + 6}

y - 4 = -\frac{1}{3}x - 2

y = -\frac{1}{3}x + 2

5 0
3 years ago
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