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2 years ago

9

What is the experimental probability that you will get exactly 2 out of the three correct

1 answer:

Dmitry [639]2 years ago

7 0

Oh ok so the answer is .666666666666 etc infinite 6s

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What is the following product? (2 square root 7+3 square root 6)(5 square root 2+4 square root 3)

Xelga [282]

$(2\sqrt7+3\sqrt6)(5\sqrt2+4\sqrt3)\qquad\text{use distributive property}\\\\=(2\sqrt7)(5\sqrt2)+(2\sqrt7)(4\sqrt3)+(3\sqrt6)(5\sqrt2)+(3\sqrt6)(4\sqrt3)\\\\=10\sqrt{14}+8\sqrt{21}+15\sqrt{12}+12\sqrt{18}\\\\=10\sqrt{14}+8\sqrt{21}+15\sqrt{4\cdot3}+12\sqrt{9\cdot2}\\\\=10\sqrt{14}+8\sqrt{21}+15\sqrt4\cdot\sqrt3+12\sqrt9\cdot\sqrt2\\\\=10\sqrt{14}+8\sqrt{21}+(15)(2)\sqrt3+(12)(3)\sqrt2\\\\=\boxed{10\sqrt{14}+8\sqrt{21}+30\sqrt3+36\sqrt2}$

5 0

2 years ago

Read 2 more answers

What number is 0.25% of 46?

cestrela7 [59]

Answer:

0.115

Step-by-step explanation:

First, multiply 0.25 x 46 to get 11.5

Then, multiply by 11.5 x 100 and get your answer.

You can find the percent of any number my doing this:

Multiplying the percent x the number then dividing by 100

hope this helps :)

3 0

2 years ago

Jungwon has $15. Notepads cost $2.50 each. How many notepads can Jungwon buy?

Artyom0805 [142]

15 divided by 2.50 is 6

4 0

2 years ago

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polygon B is a scaled copy of polygon A using a scaled factor of 5. polygon A's area is what fraction of polygon B's area

marishachu [46]

Answer:

1/5

Step-by-step explanation:

polygon B's area is 5 times greater than polygon A

3 0

2 years ago

The mean age of 9 women in an office is 27 years old.

Veronika [31]

26 to nearest year

We require the total of the sums of ages for both groups before calculating the mean for all 16

using mean = $\frac{sum}{count}$

Women

27 = $\frac{sum }{9}$ ( cross- multiply )

sum = 9 × 27 = 243

Men

25 = $\frac{sum}{7}$ ( cross- multiply )

sum = 7 × 25 = 175

Total sum of all 16 = 243 + 175 = 418

mean = $\frac{418}{16}$ = 26 ( to nearest year )

6 0

2 years ago

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