2 years ago

Help... (look, there is a picture)

Mathematics

1 answer:

cestrela7 [59]2 years ago

6 0

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That is the answer

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Rocio leaves point A traveling due east at 40 miles per hour. At the same moment, Li leaves point A traveling due west at 50 mil

Afina-wow [57]

Their speed of separation will be equal to the sum of their speeds because they are in opposite directions.
Speed of separation = 40 + 50 = 90 miles per hour

Time = distance / speed
Time = 405 / 90
Time = 4.5 hours
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3 years ago

In a recent survey of 247 nurses, 162 were unhappy with their jobs due to the difficult working hours and work-related stresses.

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Answer:

162 is 65.587044534413% of 247

rounded its 66%

Step-by-step explanation:

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2 years ago

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What term best describes a line and a point that lie in the same plane?

Taya2010 [7]

Answer:

Coplanar

Step-by-step explanation:

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3 years ago

The length of a rectangle is 8 ft longer than twice the width. If the perimeter is 64 ft, find the length and width of the recta

dmitriy555 [2]

Answer:

8x*x=64

8x^2=64

x^2=8

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length 8sqrt8

width-sqrt8

Step-by-step explanation:

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2 years ago

An alloy is made by mixing metals A and B in the ratio 3:5

makkiz [27]

Answer:

11.3

Step-by-step explanation:

First solve how many grams of each mineral you need.

To do this use this equation

$\frac{3}{5} =\frac{x}{y} ; x+y=400$

Solve the system of equations to get

x=150, y=250

Since there are 1000 grams in 1 kg then the amount of kg of each material you need will be

$x=\frac{150}{1000}; y=\frac{250}{1000}$

So you need to 0.15 of a kg of mineral a and 0.25 kg of mineral b.

Multiply 0.15 by 42 to get the amount of money needed to buy mineral a.

0.15*42=6.3

Multiply 0.25 by 20 get the amount of money needed to buy mineral b.

0.25*20= 5

Add them to get the final amount

6.3+5=11.3

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3 years ago