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3 years ago

Jan walked 1/2 mile in 1/3 hours. at this rate, how far will she walk in one hour?

Mathematics

1 answer:

Oxana [17]3 years ago

6 0

I hope this helps you

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A company that offers tubing trips down a river rents tubes for a person to use for $20 and “cooler” tubes to carry food and wat

aivan3 [116]

The group rent 11 river rent tubes and 4 cooler tubes.

Step-by-step explanation:

Rent for river rent tube = $20

Rent for cooler tubes = $12.50

Total spent = $270

Total tubes rented = 15

Let,

x be the number of river rent tube.

y be the number of cooler tubes.

According to given statement;

x+y=15 Eqn 1

20x+12.50y=270 Eqn 2

Multiplying Eqn 1 by 20

$20(x+y=15)\\20x+20y=300\ \ \ Eqn\ 3$

Subtracting Eqn 2 from Eqn 3

$(20x+20y)-(20x+12.50y)=300-270\\20x+20y-20x-12.50y=30\\7.50y=30$

Dividing both sides by 7.5

$\frac{7.5y}{7.5}=\frac{30}{7.5}\\y=4$

Putting y=4 in Eqn 1

$x+4=15\\x=15-4\\x=11$

The group rent 11 river rent tubes and 4 cooler tubes.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

6 0

2 years ago

Find two numbers a and b such that a+b=0 and ab=36

PolarNik [594]

Answer:

b = 6i then a = -6i

b = -6i then a = 6i

Step-by-step explanation:

a+b=0

ab=36

a = -b

a(b) = 36

-b * b = 36

- b^2 = 36

b^2 = -36

Take the square root of each side

sqrt(b^2) = sqrt(-36)

b =± 6i

a = - (± 6i)

so b = 6i then a = -6i

b = -6i then a = 6i

4 0

3 years ago

I really need help for this question <br>

katrin [286]

The answer is equal the lengths change when a shape is dilated but the ratio of it does not

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3 years ago

forty yards of fabric are used to make 9 school banners. how many yards of fabric does banner use? between what 2 whole numbers

saul85 [17]

Answer:

4 4/9,4 and 5

Step-by-step explanation:

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2 years ago

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Find the slope of the line that goes through the given points. (-10, -3) and (-7, -9)

Hatshy [7]

Answer:

-2

Step-by-step explanation:

rise over run or, y2-y1/x2-x1

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2 years ago