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emmainna [20.7K]
4 years ago
7

I need help with b and d please. Parabola questions

Mathematics
1 answer:
kumpel [21]4 years ago
7 0
For the axis of symmetry it will be -b/2a but in this case the axis of symmetry is going to be y=4. the x intercept will be the roots (2,0) and (6,0) and for the y intercept it will be (0,3) since the parabola crosses the y axis at (0,3)
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Which expression are equivalent to 2(4f+2g)
Cloud [144]

Answer:

8f+4g

Step-by-step explanation:

You have to distribute 2 to each number in the parentheses 2 times 4 is 8 and since 4 has a variable it is 8f and 2 times 2 is 4 and since 2 has a variable it is 4g. We don't combine the two because they have different variables. So the answer is 8f+4g. Hope this helped :)

8 0
3 years ago
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Y_Kistochka [10]

Step-by-step explanation:

multiply.48 by 55and then divide it by the swuare root

6 0
3 years ago
58, 100, 85, 98, 71, 92 find the mean absolute deviation​
barxatty [35]

Answer:

Mean Absolute Deveation (MAD): 13

Step-by-step explanation:

.

7 0
2 years ago
the half-life of strontium-90 is approximately 29 years. how much of a 500 g sample of strontium-90 will remain after 58 years​
Yuliya22 [10]

Answer:  125 g

<u>Step-by-step explanation:</u>

A = P_o\cdot e^{kt}\\\\\text{First, use the given information to find k:}\\\\\bullet A=\dfrac{1}{2}P_o\\\\\bullet k = unknown\\\\\bullet t=29\text{ years}\\\\\dfrac{1}{2}P_o=P_o\cdot e^{k(29)}\\\\\\\dfrac{1}{2}=e^{k(29)}\qquad divided\ both\ sides\ by\ P_o\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=ln\bigg(e^{k(29)}\bigg)\qquad applied\ ln\ to\ both\ sides\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=29k\qquad simplified-ln\ and\ e\ cancel\ out\\\\\\\dfrac{ln\bigg(\dfrac{1}{2}\bigg)}{29}=k\qquad divided\ 29\ from\ both\ sides\\\\\\-0.0239=k

\text{Now, use the following in the equation to solve for A:}\\\\\bullet A=unknown\\\bullet P_o=500\\\bullet k=-0.0239\\\bullet t=58\text{ years}\\\\A=500\cdot e^{(-0.0239)(58)}\\\\.\quad=500\cdot e^{-1.386}\\\\.\quad=125

8 0
4 years ago
What is the scale factor from triangle PRQ to triangle SUT
Alex

Answer:

Scale factor is 1.5

Step-by-step explanation:

ST = PR

10/15

= 1.5

8 0
3 years ago
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