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2 years ago

the scale in a drawing is 2 in.:8 ft. On the drawing, a rolm is 3 inches long. What is the length in feet of the actual room?

2 answers:

6 0

I believe the length of the actual room would be 12 ft.

To figure this out, first find how many feet one inch represents.
8/2, or 4 feet. <
Then, we have 3 inches. Since 1 inch represents 4 feet, 3 inches must represent 12 feet, as 3*4=12.

Hope this helped! :)

Elina [12.6K]2 years ago

3 0

2 in: 8 ft simplifies to 1 in: 4 ft which is just generally easier to work with.

1 in: 4 ft = 3 in: x ft

x ft= 4*3 = 12

The length of the actual room is 12 feet.

Hope this helps!

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Find the center and the radius of the circle with the equation .

Simora [160]

We have been given an equation of circle $x^2+2x+y^2-2y-14=0$ . We are asked to find the center and radius of the circle.

First of all, we will write equation of circle is standard form $(x-h)^2+(y-k)^2=r^2$ , where center of circle is at point (h,k) and radius is r.

Let us complete the square for both x and y.

$x^2+2x+y^2-2y-14+14=0+14$

$x^2+2x+y^2-2y=14$

Adding half the square of coefficient of x and y term, we will get:

$(\frac{2}{2})^2=1^2=1$

$(\frac{-2}{2})^2=(-1)^2=1$

$x^2+2x+1+y^2-2y+1=14+1+1$

$(x+1)^2+(y-1)^2=16$

$(x-(-1))^2+(y-1)^2=4^2$

Therefore, the center of the circle is $(-1,1)$ and radius is 4 units.

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2 years ago

7h=-(-2h-18) solve for h please im giving out brainliest

Eduardwww [97]

Answer:

-2

Step-by-step explanation:

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2 years ago

One less than half a number is 12. What is the number

olga_2 [115]

To find this, turn the word question into an equation.
"One less than" means - 1, which is 1 being subtracted from something.
"half a number" means 1/2x, since 1/2 is half and x is unknown.
"is 12" means = 12, which is something equals 12.
Putting this in order would be 1/2x, then - 1, then = 12.
As an equation, this is 1/2x - 1 = 12.
So the equation is 1/2x - 1 = 12

Now you must find the number by solving this equation.
1/2x - 1 = 12
First, add 1 to both sides.
12 + 1 = 13
1/2x = 13
Now multiply both sides by 2.
This way, x will be isolated since 1/2x • 2 = 1x, and 1x = x.
13 • 2 = 26
x = 26
The number is 26.

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2 years ago

25)

Liula [17]

Answer:

A) w=3

Step-by-step explanation:

4 x 3 = 12

This is the work when you plug in the numbers in the varible w

6 0

2 years ago

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