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Misha Larkins [42]
3 years ago
6

2 over 3 times 5 show your answer as a multiplication equation of a whole number and a fraction

Mathematics
1 answer:
romanna [79]3 years ago
5 0
There you go, the answer is circled. The rest is the work that goes to it.

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HELP WITH MATHHHH PLEASE
Darina [25.2K]

The vertex is at the point (0,0) and the focus at the point (0, 1/8). This is given to us. Both the vertex and focus are separated by a vertical distance in the positive direction.

This means that the parabola opens upward. The vertex form of the equation for a parabola that opens upward is:

y = a(x - h)^2 + k, where the point

(h, k) is the vertex of the parabola.

Plug the vertex given into the above equation.

y = a(x - 0)^2 + 0

y = ax^2 + 0

y = ax^2

What is a?

Note: a = 1/(4f), where f is the distance from the vertex to the focus or simply as given in the focus point above 1/8.

Let f = 1/8

a = 1/4(1/8)

a = 1/(1/2)

a = 2

The equation we want is

y = 2x^2.

f(x) = 2x^2

Choice A is the answer.

8 0
3 years ago
An unknown radioactive element decays into non-radioactive substances. In 180 days the radioactivity of a sample decreases by 73
BigorU [14]

Answer:

  • half-life: 95.3 days
  • 60% life: 70.2 days

Step-by-step explanation:

a) The proportion remaining (p) after d days can be described by ...

  p = (1 -0.73)^(d/180) = 0.27^(d/180)

Then p=1/2 when ...

  0.50 = 0.27^(d/180)

  log(0.50) = (d/180)log(0.27)

  180(log(0.50)/log(0.27) = d ≈ 95.3

The half-life is about 95.3 days.

__

b) For the proportion remaining to be 60/100, we can use the same solution process. In the end, 0.50 will be replaced by 0.60, and we have ...

  d = 180(log(0.60)/log(0.27) ≈ 70.2 . . . days

60 mg will remain of a 100 mg sample after 70.2 days.

8 0
2 years ago
4341 was rounded to the nearest one.<br> what is the lower bound?
Olin [163]

Answer:

Lower bound is 4340.5

Step-by-step explanation:

................

4 0
2 years ago
Two vertices of a right triangle are located at (1, 3) and (2, 5) .
exis [7]
If you graph 4 separate triangles with the four different points, only (2,3) and (1,5) form a right triangle.
4 0
3 years ago
Read 2 more answers
A pillar candle has a diameter of 2 inches and is 3 inches tall. What is the volume of wax in the candle? (Use 3.14 for π. Do no
klemol [59]

Answer:

V = 9.42

Step-by-step explanation:

A pillar candle resembles a cylinder.

Volume of cylinder.

V = πr²h

V = (3.14)(1)²(3)

V = (3.14)(3)

V = 9.42

7 0
3 years ago
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