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3 years ago

This Histogram displays the prices in thousands of dollars of seven cars

Mathematics

1 answer:

Katarina [22]3 years ago

8 0

Answer:

Step-by-step explanation:

The median price is between $20,000 and $30,000.

i got it right on the quiz :)

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The speed of light is about 6.71x10 squared (8) miles per hour. write that number in standared form?

Genrish500 [490]

the answer is 671,000,000

6.71 x 10^8 converted to standard form is equal to 671,000,000.

Hope it helps:)

please mark me as the brainliest:)XD

5 0

3 years ago

2x+5-x=3 (2×-3) solve each equation

umka21 [38]

The answer is x =14/5

2x+5-x=3 (2×-3)

distribute the 3.
2x + 5 -x = 6x -9

Combine like terms on the left.
x +5 = 6x -9

Subtract the 6x term from both sides.
-5x + 5 = -9

Subtract the 5 to both sides.
-5x = -14

Divide both sides by -5.
x = 14/5

3 0

3 years ago

In recent years major league baseball games have averaged three hours in duration. However, because games in Denver tend to be h

lara31 [8.8K]

Answer:

We conclude that the games in Denver would be longer than major league baseball games.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 180 minutes

Sample mean, $\bar{x}$ = 185.54 minutes

Sample size, n = 81

Alpha, α = 0.05

Sample standard deviation, s = 24.6 minutes

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 180\text{ minutes}\\H_A: \mu > 18\text{ minutes}$

We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{185.54 - 180}{\frac{24.6}{\sqrt{81}} } = 2.026$

Now,

$t_{critical} \text{ at 0.05 level of significance, 80 degree of freedom } = 1.664$

Since,

$t_{stat} > t_{critical}$

We fail to accept the null hypothesis and reject it.

We accept the alternate hypothesis.

We conclude that the games in Denver would be longer than major league baseball games.

8 0

3 years ago

Brad bought a shirt at a 20% discount and with sales tax of 5%. How can the expression 1.05(x - 0.2x) be rewritten to show what

Sveta_85 [38]

Is b because said 0.85

5 0

3 years ago

Mia’s cell phone plan: $15 a month plus free texts plus $2.50 per GB of high-speed data. Mia used 3.8 GB and sent 110 texts. How

SashulF [63]

I’m not sure but u multiply 2.5 by 3.8 to get amount she has to pay for GB. Since it free texts so 2.5 • 3.8 = $9.5 plus $15 which give $24.5
I could be wrong..

7 0

3 years ago

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