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2 years ago

The customer gives you four $20 bills for a video game that totals $67.33.

Mathematics

1 answer:

Lesechka [4]2 years ago

5 0

Answer:

the answer is $12.67

Step-by-step explanation:

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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

What is the unit length of a'b'

ladessa [460]

5
is thr correct answer

8 0

3 years ago

1. Evaluate

Dmitry_Shevchenko [17]

1. Evaluate (2-2^3)^3-4x(-4)

$(2-2 x^{3} )^{3} -4x(-4)=8-8x^{9} -16x$ 
 $=8(1-x^{9} -2x)$ 

2. Compute
-453+(-5.34)=-453-5.34
=-458.34
-56+27.4=-28.6

3. Use <, >, or =

9 > -8
-12 < -3
-4 > -7

6 0

3 years ago

Solve: 18/9- root(2,81) -Image below-

balu736 [363]

Answer:

-7

Step-by-step explanation:

$(18 \div 9) - \sqrt{81 } \\ \\ 2 - 9 \\ - 7$