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Y_Kistochka [10]
3 years ago
5

Find the quotient.5 over 7 divided by 7 over 10

Mathematics
1 answer:
raketka [301]3 years ago
3 0

Answer:

\frac{5}{7}\div \frac{7}{10}=\frac{50}{49}

Step-by-step explanation:

\frac{5}{7}\div \frac{7}{10}

\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{b}\div \frac{c}{d}=\frac{a}{b}\times \frac{d}{c}

=\frac{5}{7}\times \frac{10}{7}

\mathrm{Multiply\:fractions}:\quad \frac{a}{b}\times \frac{c}{d}=\frac{a\:\times \:c}{b\:\times \:d}

=\frac{5\times \:10}{7\times \:7}

\mathrm{Multiply\:the\:numbers:}\:5\times \:10=50

=\frac{50}{7\times \:7}

\mathrm{Multiply\:the\:numbers:}\:7\times \:7=49

=\frac{50}{49}

Therefore,

  • \frac{5}{7}\div \frac{7}{10}=\frac{50}{49}
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The Wilson family had 5 children. Assuming that the probability of a child being a girl is 0.5, find the probability that the Wi
Dafna11 [192]

Answer:

0.813

0.500

Step-by-step explanation:

Use binomial probability.

P = nCr p^r q^(n−r)

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1−p).

In this problem, n = 5, p = 0.5, and q = 0.5.

"At least 2 girls" means r = 2, 3, 4, or 5.

Or, we can use the complement.

P(at least 2 girls) = 1 − P(at most 1 girl)

P(at least 2 girls) = 1 − P(r=0 or r=1)

P(at least 2 girls) = 1 − ₅C₁ (0.5)¹ (0.5)⁵⁻¹ − ₅C₀ (0.5)⁰ (0.5)⁵⁻⁰

P(at least 2 girls) = 1 − 5 (0.5) (0.5)⁴ − 1 (1) (0.5)⁵

P(at least 2 girls) = 1 − 6 (0.5)⁵

P(at least 2 girls) ≈ 0.813

"At most 2 girls" means r = 0, 1, or 2.

P(at most 2 girls) = P(r=0, r=1, or r=2)

P(at most 2 girls) = ₅C₀ (0.5)⁰ (0.5)⁵⁻⁰ + ₅C₁ (0.5)¹ (0.5)⁵⁻¹ + ₅C₂ (0.5)² (0.5)⁵⁻²

P(at most 2 girls) = 1 (1) (0.5)⁵ + 5 (0.5) (0.5)⁴ + 10 (0.5)² (0.5)³

P(at most 2 girls) = 16 (0.5)⁵

P(at most 2 girls) = 0.500

4 0
3 years ago
Which number can each term of the equation be multiplied by to eliminate the fractions before solving?
Lerok [7]

To eliminate the fraction, we multiply by 4

<h3>How to eliminate the fractions?</h3>

The equation is given as:

-3/4m-1/2=2+1/4m

Rewrite properly as:

-\frac{3}{4}m - \frac 12 = 2 + \frac 14m

The denominators of the above fractions are 2 and 4

The LCM of 2 and 4 is 4

So, we multiply through by 4.

This gives

-3m - 2 = 8 + m

Hence, to eliminate the fraction, we multiply by 4

Read  more about fractions at:

brainly.com/question/10354322

#SPJ1

7 0
2 years ago
Find the quotient:<br> 3)21<br> A. 6<br> B. 7<br> C. 8<br> D. 9
finlep [7]
The answer is B:7!!!!!!!
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There are 1,295 students attending a small university.There are 714 women enrolled.What percent of the students are women?
BARSIC [14]
Total students = 1295

Number of women = 714

Percentage of women = 714/1295 x 100 = 55.14%

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Answer: 55.14% of the students are women.
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Find the gradient of this line. Use gradient = rise/run
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Step-by-step explanation:

the gradient of the line = 2 units/ 3 units = 2/3

5 0
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