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Bond [772]
3 years ago
8

Which is a solution to (x - 3)(x + 9) = -27? O x=-9 o x=-3 Lox=0 x=6

Mathematics
1 answer:
Ganezh [65]3 years ago
7 0
Answer: x=0,-6

(x-3)(x+9)=-27
x^2+9x-3x-27=-27
x^2+6x-27+27=0
x^2+6x=0
x*(x+6)=0
1.x=0
2.x=-6

The correct result would be x=0
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An electrician charges $40 per visit, and $20 per hour of work. On a particular day, he made 3 visits and calculated that his av
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Answer:

  4 hours

Step-by-step explanation:

For three visits, the electrician earned $40 × 3 = $120 in "per-visit" charges. For working x hours, he earned 20x in "per-hour" charges. The total of these came to 50x:

  120 +20x = 50x

  120 = 30x . . . . . . . . subtract 20x

  4 = x . . . . . . . . . . . . . divide by 30

The electrician worked 4 hours that day.

3 0
3 years ago
A 64-ounce container of sports juice costs $6.50. A 48-ounce container of the same juice costs $4.25. Which juice container is t
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The juice container that is a better buy is the 48 ounce container because the price per ounce is lower.

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In order to determine the juice container that is the better buy, you have to find the one that has a lower cost per ounce by dividing the price of each juice container by the number of ounces it has:

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6 0
3 years ago
What is greater 66mm or 6cm
LuckyWell [14K]
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7 0
3 years ago
Mason has 29.8 ounces of peanuts. He eats 5 ounces of the peanuts. Then he divides the rest of the peanuts equally among 4 frien
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Alright, so the first step we are gonna do to solve this problem is subtract since Mason ate 5 ounces of the peanuts and so, we need to subtract 5 out of 29.8.

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Now we move onto the next step which is division. As you can see in the question it says "Then he divides the rest of the peanuts equally among 4 friends."

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Since the answer is supposed to be a decimal..that's your answer!

So overall, each of Mason's friends get 6.2 ounces of peanuts.

Hope this helps!

If you are needing any more help, comment below this comment for any contact of mine. I'll be glad to help!

- Kana

7 0
3 years ago
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