X(x+9)=0
x=?
What does x have to be for the answer to be 0?

Answers

Answer 1
Answer: when we solve the equation it will become
x
² + 9x= 0
now here a = 1 , b = 9 and c = 0 
by using quaderatic formula
x = -b +,-
²- 4ac / 2a     ( 2a is divided by all terms )
by putting values
x = - 9 +,
81 / 2(1)               ( 81 = 9)
x = -9 + 9 / 2    and x = -9 -9 /2
x = 0                and x = -18 /2 = -9  
now there are two values for x one is- 9 and other is 0 
so we put -9 as the value of x then answer will be zero..
Answer 2
Answer: x(x+9)=0\nx=0 \vee x=-9

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1.
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Answers

A) A
B) A
C)A
D) B
Reason I know this is because if we look at the x number in all of these, if 2 are the same (like 2,6 and 2,4) then its a non function.
But if none of the x =the same value its a function.
Same goes for B

and now D, is a non function because out X's:
3
5
5
7
5 was repeated so it's a nonfunction.
Got it?

(I also just took this test XD)

Lisa's recipe for 6 dozen cookies has 3/4 cup of butter and 1 1/2 cups of sugar. How much butter does she need to make only 3 dozen cookies?

Answers

Dozen = 12
6 Dozen = 12 * 6 = 72  <- Irrelevant but useful information

3 dozen is half of 6 dozen, so we just half the recipe!
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1 1/2 cups of sugar (3/2 cups) = 3/4 cups

She needs 3/8 cups of butter, and a 3/4 cup of sugar


Please give me brainliest answer if I helped! I need it for my next rank :D
This is basic alegbra, you set up a proportions equations with dozen of cookies over butter. 6/ 3/4 equals 3/x. You cross multiply, 6x equals 2 1/4. You divide 6 on both sides of the equation to isolate x, the variable. 2 1/4 divided by 6 equals 0.375. The answer is 0.375 cups of butter

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Answers

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Answers

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Answers

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Answers

Answer:

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