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3 years ago

A scale drawing has a scale of 0.25 in. : 12 ft. Find the length on the drawing for an actual length of 15 ft.

Mathematics

1 answer:

lesya [120]3 years ago

7 0

If 0.25 in on a drawing is 12 ft in real life, than 1 in on the drawing is 48 ft in real life.

Just divide 15 by 48

15/48=0.3125

So the length of 15 in real life to a drawing is 0.3125 inches.

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Roberto is having his house painted. The job takes three days, and he pays the painter the same hourly rate

Tom [10]

Answer:

$\$60\ per\ hour$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

Let

x -----> the number of hours worked

y ----> the amount paid in dollars

In this problem we have a proportional variation, between two variables, x, and y

<em>Find out the constant of proportionality k</em>

For (5,300) -----> $k=y/x$ ----> $k=300/5=60\ \$/h$

For (4,240) -----> $k=y/x$ ----> $k=240/4=60\ \$/h$

For (6,360) -----> $k=y/x$ ----> $k=360/6=60\ \$/h$

The constant k is

$k=60\ \$/h$

The equation is equal to

$y=60x$

The unit rate of change of dollars with respect to time is equal to the constant of proportionality or slope of the linear equation

therefore

$\$60\ per\ hour$

3 0

3 years ago

I am doing a percent equation problem and I need help please here’s the question 20% of blank =10

Lina20 [59]

Answer:

$50$

Step-by-step explanation:

Let $x =$ blank (for convenience)

$20\%x=10$

$0.2x=10$ (change $20\%$ into its decimal form)

$x = 10\div 0.2$ (divide $0.2$ on both sides)

$x=50$

∴ Blank = 50

Hope this helps :)

4 0

3 years ago

What is a volume, and how is it measured?

dangina [55]

Volume is length x width x height. It measures how much space it can hold inside of a shape.

8 0

3 years ago

What angle corresponds with angle A?

jolli1 [7]

The angle that corresponds with angle A will be P on the other triangle. Both angle A and P are 68 degrees.

And if you look at the sides of the triangle there is a similarity, proving the sides to be similar to each other.

8 0

3 years ago

Carly has 168 markers,

Margarita [4]

Answer:

2016 markers

Step-by-step explanation:

168

x 12

-------

2016

5 0

3 years ago