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miv72 [106K]
3 years ago
13

You paint four walls. Each wall is a rectangle with a length of 20 feet and a height of 12 feet. One gallon of paint covers abou

t 320 square feet. How many gallons of paint do you need in order to cover the walls?
I got 3 gallons, is that correct?
Mathematics
1 answer:
posledela3 years ago
3 0

Answer:

u can cover 2 walls to be exact

Step-by-step explanation:

just multiple the feet in the length if it added ups to 320 u got your answer

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Find the gradient of the line 2y -8x = -2
coldgirl [10]

Answer:

  1. gradient is 4.
  2. y-intercept is -5.
  3. No.

Step-by-step explanation:

1. In order to find the gradient of equation, you have to make it into slope-form equation y = mx + b :

2y - 8x =  - 2

2y = 8x - 2

y =  \frac{8}{2} x -  \frac{2}{2}

y = 4x - 1

So m represents gradient. In this question, m is 4.

2. Make it into slope-form equation :

3y =  - 15x - 15

y =   - \frac{15}{3}  -  \frac{15}{3}

y =  - 5x - 5

In this question, y-intercept is b which is -5.

3. You have to substitute x-coodinate into the equation to see whether it is equal to y-coordinate :

y = 2x + 10

let \: x = 3

y = 2(3) + 10

y = 6 + 10

y = 16 \: (incorrect)

5 0
4 years ago
Please help!!!
Effectus [21]

Answer:

a + b + c + d + e = 180.

Step-by-step explanation:

We can prove that a = angle CBA (vertically opposite angles are equal).

Now, since lines DE and CA are parallel, then it follows that c = angle ACE (alternate angles are equal). Similarly, b = angle CAD.

But notice that what we've just done is found the angles of the triangle CBA.

So the sum of the angles (a + b + c + d + e) is the sum of the angles of a triangle.

We then conclude that a + b + c + d + e = 180 degrees.

6 0
3 years ago
9 more than 2 multiplied by f
Andrej [43]
(2+9)*f
= 11*f

The final answer is 11f~
6 0
4 years ago
Find the measure of the missing angle
gogolik [260]

Answer:

a = 151 degrees

Step-by-step explanation:

180 - 29 = 151

3 0
3 years ago
Read 2 more answers
Solve the problem. A $8920 note is signed, for 160 days, at a discount rate of 6.5 % Find the proceeds.
GuDViN [60]
<h2>Hello!</h2>

The answer is $101688

<h2>Why?</h2>

Since there is not enough information about the rate, let's assume that it's a daily rate.

<h2>Calculations</h2>

Let's say:

P : Proceeds

o : original amount

d : number of days

r  : percentual rate

So,

P = o + o*(r*d)\\

Let's make the percentual rate (6,5%) a real number by dividing into 100,

\frac{6,5}{100}=0,065


By substituting, we have

P = $8920 + $8920*(0,065*160)= 8920 + 8920*10,4\\P= $8920 + $92768 = $101688

P = $101688

Have a nice day!

<h2 /><h2 />
5 0
4 years ago
Read 2 more answers
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