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2 years ago

13

Type in expanded form. Use parentheses to indicate multiplication. (-3x)^4

1 answer:

Mumz [18]2 years ago

8 0

Negative 3x over the power by four

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Student/dashboard/home

DIA [1.3K]

Answer:

multiply by 2

Step-by-step explanation:

5x2=10

10x2=20

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2 years ago

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A dance studio offers ballet and hip-hop classes. The studio has 8 ballet classes for every 12 hip-hop classes. How many hip-hop

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There are 1 1/2 hip hop classes for 1 ballet class.

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Where do I put the parentheses for this question 5•2+3-8=17

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HA HATDOGGGGGGGGG G Haha cjar

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An expression on the total cost to download the movies

kari74 [83]

Whata re the answers that i can oick from

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2 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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2 years ago