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3 years ago

WILL GET BRAINLIEST HELP URGENT

Mathematics

1 answer:

sveticcg [70]3 years ago

7 0

Answer:

1.for x=2 and x=4 , y=0 so the zeroes are 2 and 4

the symettry of the parabola is x=3

2. the answer is x= -b/2a=-2/2=-1

x=-1 is the symettry of the parabola

3. V(-b/2a, -(b^2-4ac)/4a)

-b/2a=-10/4=-5/2=-2.5

- (b^2-4ac)=- (100-64)=-36

4a=4*2=8 so the answer is V(-2.5 , - 36/8)= V(-2.5, -4.5)

4. y=3x^2-18x+17

V(-b/2a, -(b^2-4ac)/4a)

V(18/6, (-18^2+4*3*17)/12)

V(3, (-324+204)/12

V(3, -10)

the simmetry of parabola is x=3

Step-by-step explanation:

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Pls help me graphing this, pleaseee 20 points!!

sdas [7]

Answer:

Step-by-step explanation: the first number goes two the side and the secend goes up

7 0

3 years ago

Need help with this question plz

neonofarm [45]

Answer:

A (3,-2)

Step-by-step explanation:

x = t-1

y = -sqrt(t)

Let t= 4

x = 4-1 = 3

t = -sqrt(4) = -2

The (x,y) coordinate is (3,-2)

7 0

3 years ago

A computer program has a bug that causes it to fail once in every thousand runs, on average. In an effort to find the bug, indep

Serhud [2]

Answer:

The standard deviation of the number of runs required is 2447.26

Step-by-step explanation:

For each run, there are only two possible outcomes. Either the program fails, or it does not. The probability of the computer failing during a run is independent of other runs. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The standard deviation for the expected number of trials for r sucesses is:

$\sqrt{V(X)} = \sqrt{\frac{r(1-p)}{p^{2}}}$

A computer program has a bug that causes it to fail once in every thousand runs, on average.

This means that $p = \frac{1}{1000} = 0.001$

In an effort to find the bug, independent runs of the program will be made until the program has failed six times. What is the standard deviation of the number of runs required?

This means that r = 6. So

$\sqrt{V(X)} = \sqrt{\frac{6*0.999}{(0.001)^{2}}} = 2447.26$

The standard deviation of the number of runs required is 2447.26

8 0

3 years ago

PLZ HELP!!! Find the surface area of the prism.

loris [4]

421 cm2 is the answer

4 0

3 years ago

A rectangular room is 7 times as long as it's wide and it's perimeter is 64metres. Find the dimension of the room.

wlad13 [49]

Answer:

Length = 28 meters
Width = 4 meters

Step-by-step explanation:

Assume the width of the rectangle is x. That means that the length of the rectangle is 7x which is 7 times as long as it is wide.

Perimeter of a rectangle:

= Length + length + Width + Width

Therefore:

7x + 7x + x + x = 64

16x = 64

x = 64/16

x = 4 meters

Length is 7 times as long:

= 4 * 7

= 28 meters

4 0

3 years ago