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nekit [7.7K]
3 years ago
11

What are three equivalent ratios to. 19 to 38

Mathematics
1 answer:
skad [1K]3 years ago
8 0
Three equivalent ratios to 19:38 are: 38:76, 54:114, and 76:152

You can solve this by multiplying the ratio on both sides by any number, so we can do times 2, 3, and 4. Multiply 2 by 19 and by 38 on the other side so that you get 38:76. Next you can do 3 times 19 and by 38 to get 57:114. Lastly you want to do 4 times 19 and by 38 to get 76:152.
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A study was conducted to determine whether magnets were effective in treating pain. The values represent measurements of pain us
amm1812

Answer:

Given:

Sham: n= 20,     x=0.44,   s=1.24,

Magnet:n= 20,  x =0.49,   s= 0.95

For Sham:

Sample size, n = 20

Sample mean = 0.44

Standard deviation = 1.24

For Magnet:

Sample size = 20

Sample mean = 0.49

Standard deviation = 0.95

The null and alternative hypotheses:

H0: s1²=s2²

H1: s1² ≠ s2²

a) To find the test statistics, use the formula:

\frac{s1^2}{s2^2}

\frac{1.24^2}{0.95^2} = \frac{1.5376}{0.9025} = 1.7037

Test statistics = 1.7037

b) P-value:

Sham: degrees of freedom = n - 1 = 20 - 1 = 19

Magnet: degrees of freedom = n - 1 = 20 - 1 = 19

The critical values:

[Za/2, df1, df2)], [(1 - Za/2), df1, df2]

f[0.05/2, 19, 19], f[(1 - 0.05/2), 19, 19]

f[0.025, 19, 19], f[0.975, 19, 19]

(2.526, 0.3958)

The rejection region:

Reject H0, if  F < 0.3958 or if F > 2.526

c) Conclusion:

Since the critical values of test statistic is between (0.3958 < 1.7037 < 2.526), we fail to reject null hypothesis H0.

There is insufficient evidence to to support the claim that those given a sham treatment have reductions that vary more than those treated with magnets

3 0
3 years ago
I need health drink is 130% of the recommended daily allowance RDA for a certain vitamin the RDA for this vitamin is 45 MG. How
Tanzania [10]

From this question I take it that you need to know what is 130% of 45 mg. 130% of 45 is equal to 1.3x45, which is 58.3. So, your answer is 58.3 mg of the vitamin.

5 0
3 years ago
Read 2 more answers
What is the 43rd term of the sequence: 17, 9, 1, -7
Yuki888 [10]

Answer:

-319

Step-by-step explanation:

5 0
3 years ago
3.14 times 16 divided by 3
AleksAgata [21]

Answer:

The answer is 16.746667

Step-by-step explanation:

1) Simplify 3.14 × 16 to 50.24.

50.24 \div 3

2) Simplify 50.24 ÷ 3 to 16.746667.

16.746667

<u>Therefor</u><u>. </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>16.746667.</u>

5 0
2 years ago
It costs $8 for each sandwich a family buys, plus $3 for a gallon of milk. How much will the family spend if they buy 4 sandwich
borishaifa [10]

Answer:

$35

Step-by-step explanation:

$8 x 4 = $32 + $3 = $35

7 0
3 years ago
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