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3 years ago

Can someone help me

Mathematics

1 answer:

kramer3 years ago

8 0

i think its 13.3 correct m if im wrong

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18/30 reduce into fraction

Firlakuza [10]

Answer:

35 - reduced

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3 years ago

Which equation can be used to find one-tenth of 119.9

mel-nik [20]

To find one tenth of 119.9 just divide 119.9 by 10

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3 years ago

What’s the measure of angle B?

velikii [3]

Answer:

60°

Step-by-step explanation:

∠B=(240-120)/2=120/2=60°

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3 years ago

What the unit rate for this? “9 inches of snow in 3 hous”

anastassius [24]

Answer:

3 inches per hour

Step-by-step explanation:

divide the number on the y axis (i'm assuming it's inches of snow) by the number on the x axis (i'm assuming its hours)

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3 years ago

A study of 35 golfers showed that their average score on a particular course was 92. The sample standard deviation was 5. We wan

svlad2 [7]

Answer:

$t_{\alpha/2} = t_{0.05/2} = t_{0.025} = 2.0322$

Step-by-step explanation:

We have a sample of size n = 35, $\bar{x} = 92$ and $s = 5$ . As we want to construct a 95% confidence interval to estimate the value of the true population mean $\mu$ , we should use the pivotal quantity given by $T = \frac{\bar{X}-\mu}{S/\sqrt{n}}$ which comes from the t distribution with n - 1 = 35 - 1 = 34 degrees of freedom. Besides we should use the t-value $t_{\alpha/2} = t_{0.05/2} = t_{0.025} = 2.0322$ , i.e., regarding the t-distribution with 34 degrees of freedom, we have an area of 0.025 above 2.0322 and below the probability density function. The rationale behind this is that $P(-2.0322\leq T\leq 2.0322) = 0.95$ because of the simmetry of the t distribution.

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3 years ago