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3 years ago

9

During summer, the height of the water in a pool decreased by 2 inches each week due to evaporation. What is the change in the h

eight of the water over an 8 week period??

1 answer:

Alecsey [184]3 years ago

8 0

Answer:

16in or 1ft 4in

Step-by-step explanation:

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You randomly choose one of the tiles. Without replacing the first tile, you choose a second tile. Find the probability of the co

densk [106]

Answer: I really don't know yet.

Step-by-step explanation:

Another day. $5^{2}$

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2 years ago

Prove that C(50,3) + C(50,4) = C(51,4)

valkas [14]

By definition of the binomial coefficient,

$C(n,k) = \dfrac{n!}{k!(n-k)!}$

so we have

$C(50,3) + C(50,4) = \dfrac{50!}{3!47!} + \dfrac{50!}{4!46!} \\\\ = \dfrac{50!}{3!46!} \left(\dfrac1{47} + \dfrac14\right) \\\\ = \dfrac{50!}{3!46!} \times \dfrac{51}{188} \\\\ = \dfrac{51!}{3!46!} \times \dfrac1{4\times47} \\\\ = \dfrac{51!}{4!47!} \\\\ = \dfrac{51!}{4!(51-4)!} = C(51,4)$

as required.

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2 years ago

Which angle is the smallest?

svetoff [14.1K]

Angle A is the smallest.
It's truly simple; The triangle's smallest side is 10 units (used for unknown units of measurements). Angles A and E are both acute angles, however, angle E is larger due to side AD being larger than side ED. So, the angle has to widen in order to reach the full length.

3 0

3 years ago

Pls I have a 50 in math rn

tekilochka [14]

Answer:

A

Step-by-step explanation:

4 0

2 years ago

The diagram shows four graphs match the graphs to the equations

cluponka [151]

Answer:

y=x^2 is graph D

y=1/x is graph A

otherwise, you're right

7 0

2 years ago