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3 years ago

11

a scale model of a house is 1 ft long. The actual house is 50 ft long. In the model, the window is 11/5 in. high. how many feet

is the actual window height

1 answer:

Talja [164]3 years ago

5 0

Answer:

9.167

Step-by-step explanation:

11/5*50/12

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Annie ran 5/8 of a mile. lexi ran 7/10 of a mile. who ran the farthest

yuradex [85]

Lexi is more faster

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3 years ago

In a swim-and-run biathlon, An Athlete must get to a point on the other side of a 50 meter wide river, 100 meters downstream fro

ludmilkaskok [199]

Answer:

running distance = 78,18 m

swimmingdistance = 92m

Step-by-step explanation:

Ann has to run a distance 100 - x and swim √ (50)² + x²

at speed of 5 m/sec and 2 m/sec

As distance = v*t t = d/v

Then running she will spend time doing d = ( 100-x)/5

and √[(50)² + x² ] / 2 swimming

Therefore total time of biathlon

t(x) = ( 100 - x )/5 + √[(50)² + x² ] / 2

Taking derivatives both sides of the equation we get

t´(x) = - 1/5 + [1/2 ( 2x)*2] / 4√[(50)² + x²]

t´(x) = - 1/5 + 2x / 4√[(50)² + x²] t´(x) = - 1/5 + x/2√(50)² + x²

t´(x) = 0 - 1/5 + x/2√(50)² + x² = 0

- 2√[(50)²+ x²] + 5x = 0

- 2√(50)²+ x² ) = -5x

√(50)²+ x² = 5/2 *x

squared

(50)² + x² = 25/4 x²

2500 - 21/4 x² = 0

x² = 2500*4/21

x = 21,8 m

Therefore she has to run 100 - 21,82 = 78,18 m

And swim √(50)² + (78,18)² = 92m

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4 years ago

Nina [5.8K]

Answer:

the answer is C, 18 inches width and 7 inches height

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3 years ago

Read 2 more answers

When she graduates college Linda will owe 43,000 in student loans. The interest rate on the federal Liana is 4.5 % and the rate

Amanda [17]

Answer:

federal loan amount = $29,000

private loan amount = $14,000

Step-by-step explanation:

Total amount is 43000

Let amount in federal be f

and

amount in private be 43,000 - f

Interest rate at federal is 0.045

Interest rate at private is 0.02

THus, we can form the equation shown below and solve:

f(0.045) + (43,000 - f)(0.02) = 1585

0.045f +860 - 0.02f = 1585

0.025f = 725

f = 29,000

and on private = 43,000 - 29,000 = 14,000

Hence

federal loan amount = $29,000

private loan amount = $14,000

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3 years ago

A store offers a discount of $2.25 on each sweater that originally cost $19.55. What is the total cost of 3 sweaters with the di

DENIUS [597]

Answer:

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Step-by-step explanation:

the answer is 51.90

hope this helped!!!

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3 years ago