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sashaice [31]
3 years ago
7

99 POINTS .Use the parabola tool to graph the quadratic function f(x)=2x2+16x+30 . Graph the parabola by first plotting its vert

ex and then plotting a second point on the parabola. right answer gets brainliest.

Mathematics
2 answers:
Iteru [2.4K]3 years ago
6 0
Hello!

We can put in numbers for x to get points of the graph

2(-4)^2 + 16(-4) + 30 = -2

One point is (-4, -2)

2(-3)^2 + 16(-3) + 30 = 0

The next point is (-3, 0)

2(-5)^2 + 16(-5) + 30 = 0

The third point is (-5, 0)

The parabola has a vertex of (-4, -2) and goes through the points (-3, 0) and (-5, 0)

Hope this helps!
andre [41]3 years ago
3 0
F(x)=2x²+16x+30=2(x²+8x)+30=2(x²+2*4x+16)+30-32=2(x+4)²-2
Vertex(-4,-2)
Another point, for example x-int.
2x²+16x+30 =0
2(x²+8x+15)=0
x²+8x+15=0
(x+3)(x+5)=0
x=-3, x=-5
You can take (-3,0) or (-5,0)

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I really need help. I don't understand​
Aleks [24]
The rate of change is 1/4 and the y intercept is -4
6 0
3 years ago
Find the median mode range and any outliers. Then describe the data using them 77777,88,555,6,99,10101010,12
umka2103 [35]

Answer:

The median = 5

The mode  = 7

Range = 5

Outliers= None

Step-by-step explanation:

The median is the  value of the middle term.

The median is that value which divides the data into two equal halves.

7,7,7,7,7,8,8,5,5,5,6,9,9,10,10,10,10,12

There are 18 terms . So the middle term would be 9th term value= 5

The mode is the value which is repeated the most. = 7

Range is the difference between the highest and lowest value.= 12- 7= 5

The interquartile range, IQR= q3 - q1 where q3= 10 and q1= 7

IQR= 10 −7=3

The inner fences can be found out by

q1−(1.5*IQR) and q3+(1.5*IQR)

=7−(1.5*3) and 10+(1.5*3)

Inner fences: 2.5 and 14.5

The outer fences are q1−(3*IQR) and q3+(3*IQR)

=7−(3*3) and 10+(3*3)

Outer fences: -2 and 19

So if there are any outliers in this data set, they will either be less than -2 or greater than 19. But there are no outliers.

6 0
3 years ago
The length of the segment between the points $(2a, a-4)$ and $(4, -1)$ is $2\sqrt{10}$ units. What is the product of all possibl
True [87]

Answer:

-3

Step-by-step explanation:

The length of a segment is

sqrt( ( y2-y1)^2 + (x2-x1) ^2) = 2 sqrt(10)

sqrt( ( a-4 - -1)^2 + (2a -4) ^2) = 2 sqrt(10)

sqrt( ( a-4 +1)^2 + (2a -4) ^2) = 2 sqrt(10)

Combine like terms

sqrt( ( a-3)^2 + (2a -4) ^2) = 2 sqrt(10)

Square each side

( a-3)^2 + (2a -4) ^2) = 4 *(10)

FOIL the left side

a^2 -6a +9   + 4a^2 -16a +16 = 40

Combine like terms

5a^2 -22a +25 = 40

Subtract 40 from each side

5a^2 -22a -15 =0

Factor

(a - 5) (5 a + 3) = 0

Using the zero product property

a-5 =0   5a +3 = 0

a = 5       5a = -3

a=5     a = -3/5

The product of the terms is

5 * -3/5 = -3

5 0
3 years ago
What’s 6% as a fraction
guapka [62]

Answer: 6/100

Step-by-step explanation:

a percent is out of 100%, to write 6% as a fraction simply but 6/100

5 0
3 years ago
What is x!!! PLSSSSSSSSS ANSWEREEE
steposvetlana [31]

Answer:

13 bc 100 x (13 - 3) = 100 x 10 = 1000

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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