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zhenek [66]
3 years ago
15

A train travels 2,000 miles in 40 hours ,going the same distance each hour .how many miles does the train travel each hour

Mathematics
2 answers:
Oksana_A [137]3 years ago
8 0

Answer:

50

Step-by-step explanation:

2000/40=50

Reika [66]3 years ago
5 0

Answer:

The train travels 50 miles per hour

Step-by-step explanation:

You can solve this by dividing 2,000 by 40.

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he number of square feet per house are normally distributed with an unknown population mean and standard deviation. If a random
Rama09 [41]

Answer: 1.300228

Step-by-step explanation:

The t-score we use for the confidence interval is two-tailed , i.e. the  t-score should be used to find a (1-\alpha) is given by :-

t_{n-1, \alpha/2}, where n is the sample size.

Given : Level of confidence: 1-\alpha: 0.80

Significance level : \alpha: 1-0.80=0.20

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t_{n-1, \alpha/2}=t_{46, 0.10}=1.300228

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4 0
3 years ago
Find the probability of drawing an 8 and then a queen (with replacement) from a standard deck of cards
murzikaleks [220]

Prob (8) = 4/52 = 1/13

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4 0
3 years ago
Read 2 more answers
Pls help
KATRIN_1 [288]

Answer:

169.04 in² (nearest hundredth)

Step-by-step explanation:

Surface area of a cone = \pir² + \pirl

(where r = radius of the base and l = slant height)

Given slant height l = 10 and surface area = 188.5

Surface area  = \pir² + \pirl

188.5 = \pir² + 10\pir

\pir² + 10\pir - 188.5 = 0

r = \frac{-10\pi +\sqrt{(10\pi )^2-(4\times\pi \times-188.5)} }{2\pi } = 4.219621117...

Volume of a cone = (1/3)\pir²h

(where r = radius of the base and h = height)

We need to find an expression for h in terms of l using Pythagoras' Theorem a² + b² = c², where a = radius, b = height and c = slant height

r² + h² = l²

h² = l² - r²

h = √(l² - r²)

Therefore, substituting found expression for h:

volume of a cone = (1/3)\pir²√(l² - r²)

Given slant height l = 10 and r = 4.219621117...

volume = 169.0431969... = 169.04 in² (nearest hundredth)

5 0
3 years ago
Read 2 more answers
Distance between these points <br> X (-3, -4 ) Y (5, 5)
xxMikexx [17]

ANSWER: The distance between X (-3, -4) and Y (5, 5) is: 12.041594578792, or in a simpler version: 12

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2 years ago
Which type of function best models the data in the table? Justify your choice.
Mariulka [41]
A quadratic function would fit this data.

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3 years ago
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