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mars1129 [50]
3 years ago
13

Fully Factor 3x^2 – 16x + 20

Mathematics
1 answer:
ryzh [129]3 years ago
4 0

Answer:

C. (3x2 - 10) (x - 2)

Step-by-step explanation:

3x^2 - 16x +20

Step 1: Sum = - 16x

Product = 60x^2

Step 2: Find 2 numbers that their sum is -16 and their product is 60. If you do that correctly, then you will get two numbers: 10 and -6

Step 3: Replace -16x with the two numbers found in step 2, then you will have; 3x^2 - 6x - 10x + 20

Step 4: Factorise the equation in step 3, like so;

(3x^2 - 6x)(- 10x + 20)

3x(x - 2) -10(x - 2)

(3x - 10)(x - 2)

To check if the answer is correct, expand the bracket: (3x - 10)(x - 2)

If the bracket is opened properly, you will get 3x^2 - 16x + 20

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A) 101* (x+12) <br> B)63* (7x-14) <br> C)(2x+3) (x+41)* <br> Please help :)
IceJOKER [234]

Answer:

A. x+12 = 101

      -12     -12

x=89

B. 7x-14 = 63

       +14   +14

7x=77

/7   /7

x=11

C. 2x+3 = x+ 41

    -x  -3   -x  -3

x=38

im a god *0*

4 0
2 years ago
F(x)= √x-5. find f-2
rodikova [14]

For this case we have:

Be a function of the form y = f (x)

Where:

f (x) = \sqrt {x-5}

If we want to find f (-2), we substitute x = -2, then:

f (-2) = \sqrt {-2-5}\\f (-2) = \sqrt {-7}

Since we have a negative root, the result will be given by complex numbers. By definition:

\sqrt {-1} = i

So:

f (-2) = \sqrt {7} i

Answer:

f (-2) = \sqrt {7} i


3 0
3 years ago
Christopher Christopher just found beautiful yarn for 20% off at his favorite yarn store. He can make one scarf from 2/3 of a ba
dimaraw [331]
2/3=.6 repeating
12/.6 repeating = 18
13 balls of yarn would be used to make 18 scarves.
7 0
3 years ago
Read 2 more answers
Find the jacobian of the transformation. x = 6v + 6w2, y = 8w + 8u2, z = 2u + 2v2
V125BC [204]
The answer for that problem is z =12+6
4 0
3 years ago
Hello people again please help
densk [106]
Ok so a triangle is equal to 180 degrees!!!
So with that info u can make a crazy little equation
180=70+68+47+x
Ok then you add 70,68 and 47
180=185+x
Ok now u have to subtract 185 on both sides
And get the answer -5=x or x=-5 (same thing)
3 0
2 years ago
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