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denis-greek [22]
3 years ago
7

Which is the most reasonable estimate for the height of a two-story house 15 centimeters, 15 meters,or 15 kilometers?

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
5 0
15 meters should be about right. hope this helped
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Find the volume of the sphere with a radius of 13 inches Round your answer to the nearest tenth
musickatia [10]

Answer:

V= 9202.77 in³

Step-by-step explanation:

3 0
3 years ago
An urn contains three red balls and four blue balls. Draw two balls at random from the urn, without replacement. Compute the exp
mezya [45]

Step-by-step explanation:

in total we have 3+4 = 7 balls.

when we draw the first ball, the probability to draw a red ball is 3/7, and a blue ball 4/7.

when we draw the second ball, we have now only 6 balls in total.

the probabilty to draw a red back now depends also on the result of the first draw.

if the first ball was already red, then we have only a chance now of 2 out of 6.

if the first ball was blue, then we have now a chance of 3 out of 6.

so, the probably to draw at least 1 red ball in 2 draws is the probability of drawing one on the first draw plus the probability of drawing one on the second :

1 - probability to see 2 blue balls

1 - 4/7 × 3/6 = 1 - 12/42 = 30/42 = 0.714285714...

the expected number of red balls in 2 draws is

1 red in first red in first red in second

but not second and second but not first

1×(3/7 × 4/6) + 2×(3/7 × 2/6) + 1×(4/7 × 3/6) = 12/42 + 12/42 + 12/42 = 36/42 = 6/7 = 0.857142857 ≈ 0.8571

7 0
2 years ago
Elle placed a bucket under a leaky roof. The bucket was 310 full after 25 of an hour. How much water is leaking per hour?
kvasek [131]

Answer:

3/4 bucket

Step-by-step explanation:

Elle placed a bucket under a leaky roof. The bucket was 3/10 full after 2/5 of an hour. How much water is leaking per hour

Water leaking : time taken

Let x = amount of water leaking per hour

3/10 : 2/5 = x : 1

3/10 ÷ 2/5 = x / 1

3/10 × 5/2 = x / 1

15 / 20 = x / 1

Cross product

15 * 1 = 20 * x

15 = 20x

x = 15/20

= 3/4

3/4 bucket of water is leaking per hour

4 0
3 years ago
NEED HELP ASAP<br><br> Question A.) k=5<br> Question B.) ????
andrezito [222]

Answer:

b) f^{-1}(x) = \frac{4x+5}{3}

Step-by-step explanation:

b) To find the inverse function, switch the x and y variables and solve for y:

f(x) = \frac{3x-5}{4}\\y = \frac{3x-5}{4}\\x = \frac{3y-5}{4}\\4x = 3y-5\\4x+5 = 3y\\\frac{4x+5}{3} = y\\f^{-1}(x) = \frac{4x+5}{3}

Verify Answer:

f(1) = \frac{3(1)-5}{4} = -0.5\\f^{-1}(-0.5) = \frac{4(-0.5)+5}{3} = 1

3 0
2 years ago
HELP NEEDED!!! WILL MARK BRAINLIEST!!!
finlep [7]

Answer:

  x = ±√ 1.667 = ± 1.29099

Step-by-step explanation:

List factors of p: 3,8

List factors of q: 4,5

List possible zeros: +/- p/q (0 -8 1.667

(looked it up )

7 0
3 years ago
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