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3 years ago

25 points!! please answer

Mathematics

2 answers:

melomori [17]3 years ago

6 0

ac is the answer

hope that helps

Genrish500 [490]3 years ago

5 0

Answer:

the answer is ac i hope you do well!

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Write an inequality to model the situation. A number exceeds 21

mezya [45]

It could be x > 21 im not sure

8 0

2 years ago

Akiko's bill at the restaurant was $14.05. She left a tip of 18% what is the tip amount (no rounding)

kozerog [31]

Answer:

$2.52

Step-by-step explanation:

8 0

2 years ago

A scientist studying earth's rotation determines that a specific location on earth's equator travels about 40,000 kilometers in

Mama L [17]

Answer:

Step-by-step explanation:

Discussion

The first thing you have to do is convert km to miles

Formula

1 mile = 1.6 km

x mile = 40000 km Cross Multiply

Solution

1.6*x = 1 * 40000 Divide by 1.6

x = 40000/1.6

x = 25000 miles

Answer Part 1

The distance covered is 25000 miles

Discussion Part 2

That's the distance covered in a day. Now we need to convert that to speed. The time (in hours) for 1 day is 24 hours.

Givens

d = 25000 miles

t = 24 hours

s = ?

Solution

s = d/t

s = 25000 / 24

s = 1041.66 miles per hour

Answer: 1041.66 is what is to be entered as your answer

7 0

2 years ago

An experiment was conducted to investigate whether there is a difference in mean bag strengths for two different brands of paper

Elanso [62]

Answer:

A two-sample t-test for a difference between sample means

Step-by-step explanation:

Explanation:-

A random sample of 50 bags from each of Brand X and Brand Y was selected

Given two sample sizes n₁ and n₂

Each bag was held from its rim, and one-ounce weights were dropped into the bag one at a time from the same height until the bag ripped

mean of ounces the first sample = x⁻

mean of the second sample =y⁻

Given data one-ounce weights were dropped into the bag one at a time from the same height until the bag ripped

Standard deviation of the first sample = S₁

Standard deviation of the second sample = S₂

Now we use t - distribution for a difference between the means

$t = \frac{x^{-} -y^{-} }{\sqrt{S^{2}(\frac{1}{n_{1} } +\frac{1}{n_{2} } } }$

where

$S^{2} = \frac{n_{1} S_{1} ^{2} +n_{2}S_{2} ^{2} }{n_{1} +n_{2} -2 }$

Degrees of freedom γ = n₁ +n₂ -2

3 0

3 years ago

Can someone please help me with this question.

GenaCL600 [577]

A different way to do this is doing adding

1.) 3/4 + 3/4 + 3/4 + 3/4 = 12/4 = 3

Another way is reducing

12/4 = 3

I hope this helps

8 0

2 years ago