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3 years ago

May someone please help me I’m confused!?

Mathematics

1 answer:

Natali5045456 [20]3 years ago

3 0

The answer is 1/3. it states that there are 3 possibillities and it says that red and white both have 1/3 so work out 3 divided by 3 (=1) and that is the possiblities out of 3

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A large school district has 300 buses. if each school bus is used 3.0 hours each day, the average speed of the school buses is 1

insens350 [35]

step 1

Find the number of miles run by each bus in one day

we know that

speed=distance/time

distance=speed*time

distance=(15 mi/h)*3 h=45 miles

Find the number of miles run by the total buses in one day

Multiply by 300

300*45=13,500 miles

Find the number of miles run by the total buses in 22 days

13,500*22=297,000 miles

step 2

Find the number of gallons to run 297,000 miles

we know that

the fuel economy of the buses is 10 mi/gal

by proportion

$\frac{10}{1} \frac{miles}{gal}= \frac{297,000}{x} \frac{miles}{gal} \\ \\10*x=297,000 \\ \\x=29,700\ gal$

step 3

Find the cost of 29,700 gal of gasoline

we know that

the gasoline costs $4.10 per gallon

then

29,700*4.10=$121,770

therefore

the answer is

the cost of the gasoline is $121,770

3 0

3 years ago

Solve the system of equations system

Korolek [52]

Answer:

(3, 3 )

Step-by-step explanation:

Given the 2 equations

3x - y = 6 → (1)

6x + y = 21 → (2)

Adding the 2 equations term by term will eliminate y, that is

(6x + 3x) + (y - y) = (21 + 6), that is

9x = 27 (divide both sides by 9 )

x = 3

Substitute x = 3 into either (1) or (2) and solve for y

Using (2), then

(6 × 3) + y = 21

18 + y = 21 ( subtract 18 from both sides )

y = 3

Solution is (3, 3 )

8 0

4 years ago

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Minchanka [31]

I can help with the first problems!

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3 years ago

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Marna is playing a game where you score -5 points each time you guess the correct answer. The goal is to get the lowest score. T

Assoli18 [71]

Answer:

Marna needs to answer correctly 17 times.

Step-by-step explanation:

-5 * 17 = -85, anything lower won't work.

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4 years ago

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Tom spent half of his allowance going to the movies. He washed the family car and earned eight dollars. What is his weekly allow

Yuri [45]

12x2=24

The middle is extra. All you need to answer is the $12 is half his allowence left.

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3 years ago