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Sphinxa [80]
2 years ago
15

A formula used for calculating velocity is v= 1/2 at^2. what is a expressed in terms of v and t

Mathematics
1 answer:
cricket20 [7]2 years ago
6 0

Answer:

a = (2v) / ( t^2)

Step-by-step explanation:

v = 1/2 at^2

Multiply by 2

2v = 2 * 1/2 at^2

2v = a t^2

Divide each side by t^2

2v / t^2 = a t^2 / t^2

2v / t^2 = a

a = (2v) / ( t^2)

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Solve for b help please
aliya0001 [1]

Answer:

-12=-4/3b

-12x4/3=b

-16=b

b=-16

4 0
3 years ago
Under his cell phone plan, Evan pays a flat cost of $57.50 per month and $3 per gigabyte. He wants to keep his bill at $62.90 pe
frozen [14]

Answer:

3g+57.50=62.90

Step-by-step explanation:

Your total will be 62.90 so its by its self and you need to subtract 57.50 and divide by 62.90

4 0
2 years ago
I have the answer for x I just need to know how to get the answer for Y, please help, thanks.
Ad libitum [116K]
You can use Soh Cah Toa to get your answer, in other words, sin cos tan. If you already have x, that means you probably used tan, which is adjacent and opposite. Now for y, you are trying to find the hypotenuse so you could use, sin or cos, for sin you would use the adjacent (x) and the hypotenuse (y) and for cos, you would use opposite (4) and the hypotenuse (y). This is all based on the angle 45.
4 0
2 years ago
Find the Z-scores that separate the middle 61% of the distribution from the area in the tails of the standard normal distributio
professor190 [17]

Answer:

Z-scores between -0.86 and 0.86 separate the middle 61% of the distribution from the area in the tails of the standard normal distribution

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Middle 61%

Between the 50 - (61/2) = 19.5th percentile and the 50 + (61/2) = 80.5th percentile.

19.5th percentile.

Z with a pvalue of 0.195. So Z = -0.86

80.5th percentile.

Z with a pvalue of 0.805. So Z = 0.86.

Z-scores between -0.86 and 0.86 separate the middle 61% of the distribution from the area in the tails of the standard normal distribution

8 0
2 years ago
Help please dont add a link or you'll get reported
vladimir1956 [14]
A) 288 m2

Explanation:
Ok so surface area is just adding up all the area of each faces. Just look at what I do below:

Area of the rectangular base:
10 • 6= 60

Area of the front triangle facing us:
1/2 • 12 • 10= 60
Multiply 60 by 2 cause there is still another similar triangle at the back- 60 • 2= 120

Area of the triangle facing right:
1/2 • 8 • 6= 24
Multiply 25 by 2 case there is still another similar triangle facing on other side(left)
24 • 2= 48

Add them all up together
60 + 120 + 48= 228

MARK ME BRAINLIEST TYSM
have a nice day/night! :DD

8 0
2 years ago
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