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OLga [1]
3 years ago
8

Jay had to paint part of the outside of his house he spent 7 hours painting one side and 12 hours painting another how long did

it take him to paint both sides
Mathematics
1 answer:
jolli1 [7]3 years ago
7 0
Another 12 hours to get it going
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Which equation represents the circle described? (in picture)
Sedaia [141]
You are right. In circle equation we have =r² so the correct answer will be C od D.  But we have to calculate the center of a circle.

x^2+y^2-8x-6y+24=0\quad|-24\\\\(x^2-8x)+(y^2-6y)=-24

Complete the square:

x^2-8x+a^2\implies a=\dfrac{8x}{2x}=4\implies x^2-8x+4^2\\\\\\y^2-6y+b^2\implies b=\dfrac{6y}{2y}=3\implies y^2-6y+3^2

And we have:

(x^2-8x)+(y^2-6y)=-24\\\\(x^2-8x+4^2)-4^2+(y^2-6y+3^2)-3^2=-24\\\\
(x-4)^2+(y-3)^2-16-9=-24\\\\(x-4)^2+(y-3)^2-25=-24\quad|+25\\\\\boxed{(x-4)^2+(y-3)^2=1}

So the answer is C (the same left side of equation).
6 0
3 years ago
Find f(x) + g(x) when f(x) = 2x^2 + x and g(x) = 3x + 2
Artyom0805 [142]

Answer:

2x^2 + 4x+2

Step-by-step explanation:

f(x) = 2x^2 + x and g(x) = 3x + 2

f(x) + g(x) =  2x^2 + x + 3x + 2

            Combine like terms

               = 2x^2 + 4x+2

8 0
3 years ago
Read 2 more answers
18 science club members have birthdays in the summer. This is 20% of the birthdays in the club. How many club members are there?
swat32
18 * 5 = 90
90 represents 100%, because there are 5 20% in 100%

In total there are 90 club members
80% = 71 do not have birthdays in the summer.
8 0
3 years ago
When calculating simple probability,
algol13

Answer:

The top number in a fraction. Shows how many parts we have. (The bottom number is the Denominator and shows how many equal parts the item is divided into.)

Step-by-step explanation:

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3 years ago
What is a credit report? a. A credit report is a number representing your creditworthiness. b. A credit report is a detailed lis
zzz [600]

A credit report is a detailed listing of your credit history.

Answer: b

7 0
3 years ago
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