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3 years ago

15

A Student select a marble from a bag, keeps it and select another. The bag contains 5 Green marbles 4 black marbles and 2 blue m

arbles. Find the probability of selecting a green marble on the first trial and a black marble on the second trial.

1 answer:

Serga [27]3 years ago

7 0

Answer:

Yes because yes.

Step-by-step explanation:

Y + e + s = Yes

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Blair’s needs more than 708 total points on assignments in her math class to get the grade she wants she only has 236 points and

NeX [460]

Answer:

The answer is 8

Step-by-step explanation:

Blair needs 8 extra credit assignments because 708-236=472 divided by 59 equals 8 ... so therefore that is the correct answer.

5 0

2 years ago

50 points!!!! What is the area of the trapezoid

Deffense [45]

Answer:

308 square feet

Step-by-step explanation:

A = 1/2 (26+18) (14)

A = 1/2 (44) (14)

A = 308

Answer

308 square feet

4 0

2 years ago

Read 2 more answers

Let divf = 6(5 − x) and 0 ≤ a, b, c ≤ 12. (a) find the flux of f out of the rectangular solid 0 ≤ x ≤ a, 0 ≤ y ≤ b, and 0 ≤ z ≤

dusya [7]

Continuing from the setup in the question linked above (and using the same symbols/variables), we have

$\displaystyle\iint_{\mathcal S}\mathbf f\cdot\mathrm d\mathbf S=\iiint_{\mathcal R}(\nabla\cdot f)\,\mathrm dV$
$=\displaystyle6\int_{z=0}^{z=c}\int_{y=0}^{y=b}\int_{x=0}^{x=a}(5-x)\,\mathrm dx\,\mathrm dy\,\mathrm dz$
$=\displaystyle6bc\int_0^a(5-x)\,\mathrm dx$
$=6bc\left(5a-\dfrac{a^2}2\right)=3abc(10-a)$

The next part of the question asks to maximize this result - our target function which we'll call $g(a,b,c)=3abc(10-a)$ - subject to $0\le a,b,c\le12$ .

We can see that $g$ is quadratic in $a$ , so let's complete the square.

$g(a,b,c)=-3bc(a^2-10a+25-25)=3bc(25-(a-5)^2)$

Since $b,c$ are non-negative, it stands to reason that the total product will be maximized if $a-5$ vanishes because $25-(a-5)^2$ is a parabola with its vertex (a maximum) at (5, 25). Setting $a=5$ , it's clear that the maximum of $g$ will then be attained when $b,c$ are largest, so the largest flux will be attained at $(a,b,c)=(5,12,12)$ , which gives a flux of 10,800.

7 0

2 years ago

A lawn sprinkler sprays water 7 feet in every direction as it rotates. What is the distance around the outside circle of water?

Readme [11.4K]

The answer is B. To find the Circumference (what you're looking for) you use 2×pi×radius. Which is 2×pi×7. In terms of pi that's just 2×7, which equals 14. So that means your answer is 14pi.

6 0

2 years ago

Read 2 more answers

The management of a supermarket wants to find if there is a relationship between the number of times a specific product is promo

Degger [83]

Answer:

15 11

Step-by-step explanation:

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2 years ago