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Len [333]
4 years ago
13

I'm totally lost on this one. How do you do this problem? (Only #11)

Mathematics
2 answers:
hichkok12 [17]4 years ago
6 0
22.5 because you have to add all the numbers up
dedylja [7]4 years ago
4 0
Answer is A. Hope this helped
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In a bag there are blue sweets and red sweets.
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Answer:

9/4

Step-by-step explanation:

9 out of 4 are blue, just flip the ratio.

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Give one real world example of rate to f change
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1, A horse runs 27 miles per hour (distance traveled changes by 27 miles for each hour)

Step-by-step explanation:

hope it helps!

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Convert the following fraction into a decimal.
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A random sample is to be selected from a population that has a proportion of successes p=.60. When n=400, what is the probabilit
Nata [24]

Answer:

0.45134

Step-by-step explanation:

Given that :

p = 0.6

n = 400

Probability that sample. Proportion falls between 0.59 and 0.62

Using Normal approximation :

Mean (m) = n * p = 400 * 0.6 = 240

Standard deviation (s) = sqrt(pq/n)

q = 1 - p = 1 - 0.6 = 0.4

s = sqrt((0.6 * 0.4) / 400) = 0.0244948

P(0.59 < p < 0.62) :

(x - m) / s

P((0.59 - 0.6) / 0.0244948) < p < P((0.62 - 0.6) / 0.0244948)

P(Z < −0.408249) < p < P(Z < 0.8164998)

Using the Z probability calculator :

0.79289 - 0.34155 = 0.45134

3 0
3 years ago
Matthew launches a ball at 34 meters/sec from a 28 meter tall platform. The function of the ball's height (h) at time (t) second
Alex17521 [72]

Answer:

17 seconds

Step-by-step explanation:

h(t) represents height, we want to know when the ball will return to a height of 28 feet.  So our equation is..

28 = -2t² + 34t + 28

Now solve for t...

0 = -2t² + 34t         (subtract 28 from both sides)

0 = t² - 17t             (divide both sides by -2)

0 = t(t - 17)          (factor out a t)

So

t = 0

or

t - 17 = 0

  t = 17          

0 seconds is the initial height.  At 17 seconds, the ball will return to that height

5 0
3 years ago
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