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jekas [21]
3 years ago
7

Help me solve this equation 4x - 9 = 7x + 12

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
3 0

1:    -12-9=7x-4x

2:    -21=3x

3:      x=-7

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3x to the power of 3 + 21x squared + 36x = 0 by factoring the quadratic equation.
Diano4ka-milaya [45]

Answer:

x = 0, -4 and -3.

Step-by-step explanation:

The given expression is "3x to the power of 3 + 21x squared + 36x = 0".

We can write this expression as follows :

3x^3+21x^2+36x=0

Taking 3x common.

3x(x^2+7x+12)=0\\\\3x=0\ \text{and}\ (x^2+7x+12)=0

x = 3

x^2+7x+12=0\\\\x^2+3x+4x+12=0\\\\x(x+3)+4(x+3)=0\\\\(x+4)(x+3)=0\\\\x=-4,-3

Hence, the solution of the given quadratic equation are x = 0, -4 and -3.

5 0
3 years ago
Find the indicated function values for the function below<br> g(x)=9x + 8<br> g(0) =
Dennis_Churaev [7]

Answer:

g(0) = 8

Step-by-step explanation:

The problem gives us the following function:

g(x) = 9x + 8

g(0) =

This is the value of g when x = 0. So

g(x) = 9x + 8

g(0) = 9*0 + 8

g(0) = 8

So the answer to this question is:

g(0) = 8

6 0
3 years ago
Use the order of operations to evaluate the expression.
Lera25 [3.4K]

Answer:

the answer is 12

Step-by-step explanation

first you got to divide the 12 and the 3 which is 4

then you got to add 8 and 22 which would get you 30 and then bring the times 2 down and the multiply it to the 4 which is 8 and then you subtract the 30 and the 8 and then you'll get 12

6 0
4 years ago
Read 2 more answers
What are the zeros of f(x) = x2 - x - 20?
sattari [20]

Answer:

(-4,0) and (5,0)

Step-by-step explanation:

Factor.

f(x) = x^2 -x - 20

Factors of -20 that when are added they equal -1

-5 and 4

(x-5) (x+4)

x=5 and x=-4

5 0
3 years ago
Sara works for a hair salon and receives tips from her customers. The weekly tips
Monica [59]

Answer:

mean: 107.86

median: 100

range: 140

mode: 100

Step-by-step explanation:

3 0
2 years ago
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