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3 years ago

Pls help 7th grade math your a life saver ❤

Mathematics

2 answers:

pentagon [3]3 years ago

6 0

2. 50 minutes

3. 8 commercials in the 6 minute block

Darina [25.2K]3 years ago

4 0

2. 5/6
50/60
50 minutes
3. 6
45 sec per commercial
3/4 24/4
8
8 commercials in the 6 minute block

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Find the area of the figure.

11111nata11111 [884]

Answer:

180 sq.cm

Step-by-step explanation:

A = 10 x 10 + 16 x 5 x 1/2 x 2

A = 100 + 16 x 5

A = 100 + 80

A = 180 square cm

Hope that helps!

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3 years ago

Read 2 more answers

What is 30 less than 0

PilotLPTM [1.2K]

Answer: -30

Step-by-step explanation:

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3 years ago

An automobile manufacturer has given its van a 47.2 miles/gallon (MPG) rating. An independent testing firm has been contracted t

7nadin3 [17]

Answer:

The test statistics is $t = -1.7$

The Null and Alternative hypothesis are

$H_o : \mu = 47.2$ and $H_a : \mu \ne 47.2$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 47.2 miles/gallon(MPG)$

The sample size is $n = 250 \ van$

The sample mean is $\= x = 47.0$

The sample standard deviation is $\sigma = 1.9$

The level of significance is $\alpha = 0.02$

Given that the value which the manufacturer gave the automobile is 47.2 and it is believed that this is not correct, then

The Null Hypothesis is

$H_o : \mu = 47.2$

The alternative Hypothesis is

$H_a : \mu \ne 47.2$

The test statistics can be mathematically evaluated as

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

substituting values

$t = \frac{\= 47- 47.2}{\frac{1.9 }{\sqrt{250} } }$

$t = -1.7$

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3 years ago

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blagie [28]

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4 years ago

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liberstina [14]

Answer:

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Step-by-step explanation:

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3 years ago