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Anit [1.1K]
3 years ago
12

If the product of 2 positive fractions a and bid 15/56 find3 pairs of possible values for a and b

Mathematics
1 answer:
Marizza181 [45]3 years ago
5 0
Factors of 15: 1, 3, 5
factors of 56: 2, 4, 7, 8,14, 28
3 pairs of possible values of a and b are
5/14 and 3/4; 1/2 and 15/28; 3/7 and 5/8
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64% of students will apply for graduate school. from a sample of 100 students, 52 stating that they will apply for grad school.
lana66690 [7]

Answer:

you<u> accept </u>the alternative hypothesis

Step-by-step explanation:

The null and alternative hypothesis can be computed as follows:

H_o: p = 0.64 \\ \\ H_1: p \le 0.64

The sample proportion \hat p = \dfrac{x}{n}

\hat p = \dfrac{52}{100}

\hat p = 0.52

The test statistics can be computed as:

Z = \dfrac{\hat p -p_o}{ \sqrt{ \dfrac{p_o \times (1-p_o)}{ n} }}}

Z = \dfrac{0.52 -0.64}{ \sqrt{ \dfrac{0.64 \times (1-0.64)}{ 100} }}}

Z = -2.5

The P-value = 2( Z< -2.5)

From the tables;

The P-value = 2 (0.0062)

The P-value = 0.0124

The significance level = 0.01

Since the P-value is > significance level; we fail to reject the null hypothesis.

Conclusion: we accept the alternative hypothesis

7 0
3 years ago
What is the sum of 9/10+8/100
ArbitrLikvidat [17]
9/10 + 8/100

9/10 + 2×4/25×4

Common denominator is 50.

9/10 + 2/25.

5×9/5×10 + 2×2/2×25

45/50 + 4/50

= 49/50
6 0
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Answer:

1264 and 632

Step-by-step explanation:

x + 2x = 1896

3x=1896

x=632

5 0
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Answer:I think it might be c

Step-by-step explanation:

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3 years ago
In a nursery class of 18 pupils, the average is
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Answer:

The sum of the age of pupils is 81

Step-by-step explanation:

Let sum of age of 18pupils = x

Average ages = 4.5

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4.5 = x/18

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8 0
3 years ago
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