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2 years ago

11

A bag has 10 marbles and 4 are black. Joseph picks 2 marbles without replacing the first. What is the probability that both are

black?

1 answer:

Crank2 years ago

6 0

If there are 10 marbles in total then the probability is 2/10

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At a railway yard, locomotives are used to haul containers carrying oil. A locomotive is chosen according to the volume of oil i

artcher [175]

Volume of cylinder A = π(12^2/4) x (40/2) = 2,262 cubic feet which will be hauled by locomotive BR73.
Volume of cylinder B = π(8^2/4) x 24 = 1,206 cubic feet which will be hauled by locomotive CG35.
Volume of cylinder C = π(16^2/4) x 16 = 3,217 cubic feet which will be hauled by locomotive YH61.
Volume of cylinder D = π(6^2/4) x 12 = 339 cubic feet which will be hauled by locomotive A450.

8 0

2 years ago

What is the scale factor of ABC to UVW

Hoochie [10]

One of the easiest question I've seen.
It's a scale factor of 5 because,
5*5=25
5*3=15
5*4=20
Hope this helps!

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2 years ago

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A pilot flew a jet from City A to City B, a distance of 1700 miles. On the return trip, the average speed was 20% faster than th

ArbitrLikvidat [17]

The answer is about 650 mi/h

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2 years ago

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Subtract 15mn – 22m +2n from 14mn – 12m +7n.

alex41 [277]

Answer: -1mn + 10m +5n

Step-by-step explanation:

14 - 15 = -1

-12 + 22 = 10

7 - 2 = 5

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2 years ago

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Troy made a scale drawing of the Statue of Liberty which has an actual height of 305 feet. He decides to use a scale in which 1

sergiy2304 [10]

The height of statue is 12.2 inches in Troy's drawing.

Step-by-step explanation:

Given,

Actual height of statue = 305 feet

Scale used by Troy;

25 feet = 1 inch

1 feet = $\frac{1}{25}\ inches$

305 feet = $\frac{1}{25}*305 \ inches$

305 feet = $\frac{305}{25}\ inches\\$

305 feet = 12.2 inches

The height of statue is 12.2 inches in Troy's drawing.

Keywords: unit rate, division

Learn more about unit rate at:

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3 0

2 years ago