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sladkih [1.3K]
3 years ago
8

Determine the direction that this parabola opens y=-4x^2-8x-13

Mathematics
1 answer:
Mazyrski [523]3 years ago
4 0

Answer:

The direction that the paraboa y=-4x^2-8x-13 open is

Down

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HELP ME pleaseeeee ill mark you as brainiest if I get two answers
sergiy2304 [10]

                                        Question 9

Given the segment XY with the endpoints X and Y

Given that the ray NM is the segment bisector XY

so

NM divides the segment XY into two equal parts

XM = MY

given

XM = 3x+1

MY = 8x-24

so substituting XM = 3x+1 and MY = 8x-24 in the equation

XM = MY

3x+1 = 8x-24

8x-3x = 1+24

5x = 25

divide both sides by 5

5x/5 = 25/5

x = 5

so the value of x = 5

As the length of the segment XY is:

Length of segment XY = XM + MY

                                = 3x+1 + 8x-24

                                = 11x - 23

substituting x = 5

                               = 11(5) - 23

                               = 55 - 23

                               = 32

Therefore,

The length of the segment = 32 units

                                        Question 10)

Given the segment XY with the endpoints X and Y

Given that the line n is the segment bisector XY

so

The line divides the segment XY into two equal parts at M

XM = MY

given

XM = 5x+8

MY = 9x+12

so substituting XM = 5x+8 and MY = 9x+12 in the equation

XM = MY

5x+8 = 9x+12

9x-5x = 8-12

4x = -4

divide both sides by 4

4x/4 = -4/4

x = -1

so the value of x = -1

As the length of the segment XY is:

Length of segment XY = XM + MY

                                = 5x+8 + 9x+12

                                = 14x + 20

substituting x = 1

                               = 14(-1) + 20

                               = -14+20

                               = 6

Therefore,

The length of the segment XY = 6 units

8 0
3 years ago
Convert the mixed number 7 4/7 to a mixed decimal and round the nearest thousand
RideAnS [48]
Using a calculator, you can find out that \sf{ \frac{4}{7}\approx 0.571428571 \approx.571

and so that means \sf{ 7\frac{4}{7}\approx 7.571428571 \approx 7.571

so your answer is

\sf{ 7\frac{4}{7} \approx \huge{\boxed{7.571}}
8 0
3 years ago
Read 2 more answers
I need help on this 6th grade math problem
vivado [14]

Answer: x<17.5

Step-by-step explanation:

Subtract  from both sides: x+2.5-2.5<20-2.5

Simplify the arithmetic: x<20-2.5

Simplify the arithmetic: x<17.5

Hope it helps!

4 0
2 years ago
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6:1 equivalent to the ratio 12:3
Lady bird [3.3K]

Answer:

No

Step-by-step explanation:

multiply each side of 6:1 by 3 to get it equivalent. 18:3 is not equal to 12:3 so no

3 0
3 years ago
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True or False<br> <img src="https://tex.z-dn.net/?f=%20i%5E%7B2%7D%20%3D%20%5Csqrt%7B2%7D%20" id="TexFormula1" title=" i^{2} = \
ivanzaharov [21]
I hope this helps you

3 0
3 years ago
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