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3 years ago

SOMEONE PLS HELP!

Mathematics

1 answer:

exis [7]3 years ago

5 0

The angle measure of any interior angle of a regular polygon with 6 sides is 120 degrees

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How does 6+(-3) equal 3? I don't understand what I have to do to get that answer.

WITCHER [35]

Answer:

look at the explanantion <33

Step-by-step explanation:

so negative numbers are basically numbers with minus signs in front of them. So when you add a negative number, its basically like subtracting a number. so by adding negative three, youre subtacting 3.

6-3 is 3. does that make sense?

8 0

3 years ago

Read 2 more answers

Amy used a total of 7 1/4 gallons of gas while driving her car. Each hour she was driving, she used 5/6 gallons of gas. What was

nika2105 [10]

Answer: 8 7/10 hours

whole part = 8

fractional part = 7/10

========================================================

Work Shown:

x = number of hours driving

(5/6)x = total number of gallons of gas used

(5/6)x = 7 & 1/4

(5/6)x = 7 + 1/4

(5/6)x = 28/4 + 1/4

(5/6)x = 29/4

x = (29/4)*(6/5)

x = (29*6)/(4*5)

x = 174/20

x = 87/10

x = (80+7)/10

x = 80/10 + 7/10

x = 8 + 7/10

x = 8 & 7/10

This is the same as writing 8 7/10

Amy drove 8 full hours, plus an additional 7/10 of an hour.

That mixed number converts to the decimal value 8.7

7 0

1 year ago

A cereal manufacturer is concerned that the boxes of cereal not be under filled or overfilled.

aniked [119]

Answer:

Step-by-step explanation:

given that

A cereal manufacturer is concerned that the boxes of cereal not be under filled or overfilled.

Each box of cereal is supposed to contain 13 ounces of cereal.

A random sample of 31 boxes is tested.

The average weight is 12.58 ounces and the standard deviation is 0.25 ounces.

Sample mean = 12.58

Sample std deviation = 0.25

Sample size = 31

Sample std error = $\sqrt{\frac{0.25}{\sqrt{31} } } \\=0.0449$

confidence interval can be calculated using t critical value because population sd is not known.

df = 30

t critical for two tailed = 1.697

Margin of error = $1.697*0.0449\\=0.07620$

conidence interval = $(12.58-0.0762, 12.58+0.0762)\\=(12.5038, 12.6562)$

Since this does not contain 13 oz. we reject the claim that each box contains exactly 13 oz.

4 0

4 years ago

An online shopping company has t-shirts for sale. The sales tax rate is 7.25% on each shirt ordered, and there is a flat fee of

jenyasd209 [6]

Answer: A

Step-by-step explanation:

4 0

4 years ago

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boyakko [2]

Answer:

5hg vb

Step-by-step explanation:

,hgbn

5 0

2 years ago