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Debora [2.8K]
3 years ago
14

The zeros of the function f(x)=3x^2-3x-6 are

Mathematics
1 answer:
Mrac [35]3 years ago
7 0
3x^2-3x-6=0\\
3(x^2-x-2)=0\\
x^2-x-2=0
x^2+x-2x-2=0\\
x(x+1)-2(x+1)=0\\
(x-2)(x+1)=0\\
x=2 \vee x=-1

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Ginny factored 6x2 – 31x – 30 as shown: ac = –180 and b = 31 36(–5) = –180 and 36 + (–5) = 31 6x2 + 36x – 5x – 30 6x(x + 6) – 5(
meriva

Answer:

Ginny made a mistake in step 1 when she identified b = 31. It should be b=-31

Step-by-step explanation:

Ginny factored 6x^2 -31x -30 as shown:

ac = –180 and

b = 31

36(–5) = –180 and 36 + (–5) = 31

6x^2 + 36x – 5x – 30

6x(x + 6) – 5(x + 6)

(x + 6)(6x – 5)

b is the coefficient of x and from the trinomial 6x^2 -31x -30, b=-31.

Therefore Ginny made a mistake in step 1 when she identified b = 31. It should be b = –31.

The correct steps are: 6x^2 -31x -30:

ac = –180 and

b = -31

36(–5) = –180 and -36+5 = -31

6x^2-36x +5x -30  

6x(x-6)+5(x-6)

(x-6)(6x+5)

7 0
3 years ago
The value of almost everything you own assets such as a car computer oar house depreciates goes down overtime when an asset valu
galben [10]

Answer:

Option 1 is the correct one given that v=value and t=time.

Step-by-step explanation:

3 0
3 years ago
There is a 30% sale today. what would the shoes that normally cost $125 now cost?
Katena32 [7]

Answer:

$37.50

Step-by-step explanation:

$125 times30%=$37.50

6 0
3 years ago
Which value of a would make the following statement true? -3(2x + a) = -6x + 15
klemol [59]
Your answer is -5.
This is because, if you expand the single bracket, you get -6x -3a, and since the other side of the equals sign is -6x + 15, then you need to do 15 ÷ -3 = -5.

I hope this helps!
6 0
3 years ago
The formula for the area of a triangle is A==bh, where b is the length of the base and h is the height.
zimovet [89]

Answer:   Height is 5 units.

Step-by-step explanation:

Alright, lets get started.

The area of the triangle is A=\frac{1}{2} \times b \times h

The area is given as 30

The base is given as 12

Plugging the values in formula

30=\frac{1}{2} \times 12\times h

30=6\times h

Dividing 6 in both sides

\frac{30}{6}=\frac{6\times h}{6}

5=h

h=5

Hence the height of the triangle is 5 units.........Answer

6 0
3 years ago
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