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tino4ka555 [31]
3 years ago
8

5/7 of the people who listen to the speaker working mixed the wrestler unconvinced what was the ratio of the convinced to the un

convinced
Mathematics
1 answer:
Zanzabum3 years ago
5 0
1-5/7=2/7, 2/7:5:7= 2:5
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Cuantas veces al día la manecilla de la hora de un reloj análogo pasa por un número múltiplo de 3.
Fiesta28 [93]
Pasa 96 veces. Porque cuando en una hora ahí 4 múltiples de 3. Tu coges las 4 vez es I lo multiplica a 24 horas. Así es como yo resulte con el número 96.
5 0
3 years ago
Which of the following options have the same value as 65% of 20
Natasha2012 [34]

Answer:

Opt A and D

Step-by-step explanation:

65% is 100 based number, this means that 65% is the same as 65/100, or 0,65.

65% of 20 is obtained performing the following operation:

0,65 * 20

or

65*20/100

Any of them

7 0
3 years ago
Read 2 more answers
Plz help. I don't understand how to do this.<br> Multiply. −4i(2−i)
Elza [17]

Answer:

-8i+4i^2

Step-by-step explanation:

You do distributive property(multiply -4i on the inside on the parantesis) and you get the answer. Eres muy bruto!!!!!!! fue un chiste:)

8 0
2 years ago
The average size of 8 farms in Indiana County, Pennsylvania, is 191 acres with standard deviation of 38 acres. The average size
Grace [21]

Answer:

Step-by-step explanation:

This is a test of 2 independent groups. The population standard deviations are not known. it is a two-tailed test. Let μ1 be average size of farms in Indiana County, Pennsylvania and μ2 be the average size of farms in Greene County, Pennsylvania.

The random variable is μ1 - μ2 = difference in the average size of the farms in Indiana County and the average size of the farms in Greene County.

We would set up the hypothesis.

The null hypothesis is

H0 : μ1 = μ2 H0 : μ1 - μ2 = 0

The alternative hypothesis is

H1 : μ1 ≠ μ2 H1 : μ1 - μ2 ≠ 0

Since sample standard deviation is known, we would determine the test statistic by using the t test. The formula is

(μ1 - μ2)/√(s1²/n1 + s2²/n2)

From the information given,

μ1 = 191

μ2 = 199

s1 = 38

s2 = 12

n1 = 8

n2 = 10

t = (191 - 199)/√(38²/8 + 12²/10)

t = - 0.57

The formula for determining the degree of freedom is

df = [s1²/n1 + s2²/n2]²/(1/n1 - 1)(s1²/n1)² + (1/n2 - 1)(s2²/n2)²

df = [38²/8 + 12²/10]²/[(1/8 - 1)(38²/8)² + (1/10 - 1)(12²/10)²] = 37986.01/4677.36142857143

df = 8

We would determine the probability value from the t test calculator. It becomes

p value = 0.58

Let us assume a significance level of 0.05

Since alpha, 0.05 < than the p value, 0.58, then we would accept the null hypothesis. Therefore, at a significance level of 5%, there is not sufficient evidence to conclude that the average size of the farms in Indiana County and the average size of the farms in Greene County are different.

4 0
3 years ago
Please explain to me how it was solved.​
nydimaria [60]

Answer:

Fraction: 1/ 5 n= 7

Step-by-step explanation:

To find n first you cross multiply : 2/ 10 * n / 35

= So we multiply 10 and n ( answer = 10n)

= Then 2 and 35 ( multiply) ( answer = 70)

Now algebra

70 = 10n

Divide both sides by 10

10n / 10 = 70 / 10

n = 7

The fraction becomes 7 / 35

When this is simplified the answer is 1 / 5

To simplify you divide the numerator and denominator of the fraction by 25 ( GCF )

HOPE THIS HELPED

5 0
3 years ago
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