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4 years ago

11

there are 7 students on a committee. To decide which 3 of these students will attend a conference, 3 names are chosen at random

by pulling names one at a time from a hate. What is the probability that sarah jamal and mai are chosen in any order

1 answer:

rosijanka [135]4 years ago

4 0

If it’s all 3 being chosen it’s 1/7 X 1/7 X 1/7 which is .002915 which would be a .29%

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WHAT WOULD THIS BE? HOW WOULD I DO IT PLEASE HELP IM STUCK

kipiarov [429]

Answer:

90

Step-by-step explanation:

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3 years ago

Which shows one way to determine the factors of y3 – 9x2 + 5x – 45 by grouping

Gnoma [55]

Answer:

(x²+5)(x-9)

Step-by-step explanation:

Assuming that you are asking to factor by grouping:

x³ - 9x² + 5x – 45

You can group:

x²(x-9) + 5(x-9)

and then combine the x² and 5:

(x²+5)(x-9)

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3 years ago

HELP PICTURE IS SHOWN

Vedmedyk [2.9K]

The answer is c) 45 times PI cubed.

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3 years ago

pychu [463]

Answer:

68.8 sq. inches.

Step-by-step explanation:

The triangular surfaces have sides 2 in by 3 in by 4 in.

So, half perimeter, s = $\frac{2 + 3 + 4}{2} = 4.5$

So, the area of the triangular face is $\sqrt{s(s - 4)(s - 2)(s - 3)} = \sqrt{4.5 \times 0.5 \times 2.5 \times 1.5} = 2.9$ sq. inches.

Now, the total surface area of the right triangular prism will be (2.9 × 2) + 7(2 + 3 + 4) = 68.8 sq. inches. (Answer)

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3 years ago

During the summer , you want to earn at least $150 per week. You can earn$10 per hour working for a farmer, and $5 per hour baby

almond37 [142]

X = nr. hrs working for a farmer;
y = nr. hrs. babysitting;
x + y <= 25;
10x + 5y >= 150

a) Solve the system => one of the solution is x =5; y = 20(babysitting)
b) 10 + 12 =22 <= 25; 10*10 + 5*12 = 160 >=150.

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4 years ago

Read 2 more answers