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3 years ago

Situation: to compute the perimeter of a rectangle you find the sum of two times

Mathematics

1 answer:

Alex_Xolod [135]3 years ago

5 0

Answer:

110

Step-by-step explanation:

$30 + 25 \\ = 55 \times 2 \\ = 110$

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Write an expression for b divided by 6

yaroslaw [1]

Answer:

a = b / 6

Step-by-step explanation:

5 0

3 years ago

A lathe is set to cut bars of steel into lengths of 6 centimeters. the lathe is considered to be in perfect adjustment if the av

Nitella [24]

The hypothesis testing for this problem is:
a. The hypothesis for this problem are:
Null: H0: μ=6
Alternative: Ha: μ≠6

b. Test
T-statistics = (6.08 - 6) / 0.44* √(121) = 2

c. P value = 0.047759

Since our p-value is smaller than the significant level of 0.05, we can say that we reject the null hypothesis.

Conclusion: there is enough evidence to say lathe is not in perfect adjustment.

4 0

3 years ago

Determine the slope of the line represented by y = 2x - 9

lbvjy [14]

Answer:

Step-by-step explanation:

2x is the slope which is just 2

7 0

2 years ago

A shoe manufacturer was investigating the weights of men's soccer cleats. He felt that the weight of these cleats was less than

aleksklad [387]

Answer:

The conclusion is that the researcher was correct

Step-by-step explanation:

From the question we are told that

The sample size is $n = 13$

The sample mean is $\= x = 9.63$

The standard deviation is $s = 0.585$

The significance level is $\alpha = 0.05$

The Null Hypothesis is $H_o : \mu = 0$

The Alternative Hypothesis is $H_a = \mu < 10$

The test statistic is mathematically represented as

$t = \frac{\= x - \mu }{\frac{s}{\sqrt{n} } }$

Substituting values

$t = \frac{9.63 - 10 }{\frac{0.585}{\sqrt{13} } }$

$t = - 2.280$

Now the critical value for $\alpha$ is

$t_{\alpha } = 1.645$

This obtained from the critical value table

So comparing the critical value of alpha and the test value we see that the test value is less than the critical value so the Null Hypothesis is rejected

The conclusion is that the researcher was correct

6 0

3 years ago

Craig used 4 scoops of soil to fill 2/5 of a plant pot. How many scoops will Craig need to fill the whole plant pot?

liberstina [14]

Answer:

Step-by-step explanation:

4=2/5 8=4/5 10=5/5

3 0

3 years ago