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3 years ago

2h/3 -1/4 = 1/3how do you do this problem

Mathematics

1 answer:

mrs_skeptik [129]3 years ago

7 0

Subtract from both sides

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If 2*3=10, 3*5=13, what is 4*7?

Mrac [35]

It should be 16, but because there is only 2 examples, I'm not totally sure. But, I hope this helps you! :)

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3 years ago

Solve this system of equations:

Natali [406]

Answer:

Step-by-step explanation:

4(2y -8) + y = 13

8y - 32 + y = 13

9y - 32 = 13

9y = 45

y = 5

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(2, 5)

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3 years ago

Please help me on this

saul85 [17]

Answer:

Step-by-step explanation:

9•8 = 72

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3 years ago

Consider an urn containing 8 white balls, 7 red balls and 5 black balls.

weqwewe [10]

Answer + Step-by-step explanation:

1) The probability of getting 2 white balls is equal to:

$=\frac{8}{20} \times \frac{7}{19}\\\\= 0.147368421053$

2) the probability of getting 2 white balls is equal to:

$=C^{2}_{5}\times (\frac{8}{20} \times \frac{7}{19}) \times (\frac{12}{18} \times \frac{11}{17} \times \frac{10}{16})\\=0.397316821465$

3) The probability of getting at least 72 white balls is:

$=C^{72}_{150}\times \left( \frac{8}{20} \right)^{72} \times \left( \frac{7}{20} \right)^{78} +C^{73}_{150}\times \left( \frac{8}{20} \right)^{73} \times \left( \frac{7}{20} \right)^{77} + \cdots +C^{149}_{150}\times \left( \frac{8}{20} \right)^{149} \times \left( \frac{7}{20} \right)^{1} +\left( \frac{8}{20} \right)^{150}$

$=\sum^{150}_{k=72} [C^{k}_{150}\times \left( \frac{8}{15} \right)^{k} \times \left( \frac{7}{15} \right)^{150-k}]$

5 0

1 year ago

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Identify the 6 coins that will make a total of $0.66

Sauron [17]

2 quarters, 3 nickels, 1 Penny

5 0

4 years ago

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2h/3 -1/4 = 1/3how do you do this problem​

2h/3 -1/4 = 1/3how do you do this problem