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3 years ago

11

6^3-4^2+17divide(x-4)

1 answer:

mr Goodwill [35]3 years ago

5 0

Answer:

-54.25

Step-by-step explanation:

Just do it step by step and youll get the answer

You might be interested in

A recent study compared the time spent together by single- and dual-earner couples. According to the records kept by the wives d

sergij07 [2.7K]

Answer:

There is evidence to show that the single-earner couples on average spend more time watching television together

Step-by-step explanation:

Given that a recent study compared the time spent together by single- and dual-earner couples. According to the records kept by the wives during the study, the mean amount of time spent together watching television among the single-earner couples was 61 minutes per day, with a standard deviation of 15.5 minutes. For the dual-earner couples, the mean number of minutes spent watching television was 48.4 minutes, with a standard deviation of 18.1 minutes.

$H_0: \bar x=\bar y\\H_a: \bar x > \bar y$

(Right tailed test where x stands for single earner and y for double)

Let us assume sample sizes are 500 each.

Difference -12.600

Standard error 1.066

95% CI -14.6913 to -10.5087

t-statistic -11.823

DF 998

Significance level P < 0.0001

Since p is less than alpha we reject null hypothesis.

There is evidence to show that the single-earner couples on average spend more time watching television together

4 0

3 years ago

The distance between two stars is 9.0 x 10 to the power of -3 light years. A light year is equal to

sergey [27]

Answer:

The distance between the two stars in miles is 5.292 * 10^10 miles

Step-by-step explanation:

Here, we want to make a conversion from light year to miles

To make this conversion, we simply are going to multiply the light year by the miles

Mathematically, we have this as;

9 * 10^-3 * 5.88 * 10^12

= 52.92 * 10^9

= 5.292 * 10^10 miles

6 0

3 years ago

48% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually

oksian1 [2.3K]

Answer:

There is no sufficient evidence to support the executive claim

Step-by-step explanation:

From the question we are told that

The population proportion is $p = 0.48$

The sample proportion is $\r p = 0.45$

The sample size is $n = 300$

The level of significance is $\alpha = 0.02$

The null hypothesis is $H_o : p= 0.48$

The alternative hypothesis is $H_a : p \ne 0.48$

Generally the test statistics is mathematically evaluated as

$t = \frac{\r p - p }{ \sqrt{ \frac{p(1 - p )}{n} } }$

=> $t = \frac{0.45 - 0.48 }{ \sqrt{ \frac{0.48 (1 - 0.48 )}{300} } }$

=> $t = -1.04$

The p-value is mathematically represented as

$p-value = 2P(z > |-1.04|)$

Form the z-table

$P(z > |-1.04|) = 0.15$

=> $p-value = 2 * 0.15$

=> $p-value = 0.3$

Given that $p-value > \alpha$ we fail to reject the null hypothesis

Hence we can conclude that there is no sufficient evidence to support the executive claim

5 0

3 years ago

What is the slope of the line that

ArbitrLikvidat [17]

Answer: M=1/3

Step-by-step explanation: We know how to find the slope by using the formula: y2-y1/x2-x1

Then we get 3-1/3--3=2/6=

1/3

6 0

3 years ago

There are 15 students in a class and 12 of these students passed their Geometry test. What percentage of these students passed t

nata0808 [166]

80 percent passed their geometry test

3 0

3 years ago