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kifflom [539]
3 years ago
15

How do solve z^2-6z-27=0 by factoring?

Mathematics
1 answer:
DanielleElmas [232]3 years ago
4 0
Z^2−6z−27=0

Factor left side of equation.

(z+3)(z−9)=0

Set factors equal to 0.

z+3=0 or z−9=0

z=−3 or z=9

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Mia spins the spinner two times. what is the probability that the arrow will land on 2 both times
kolezko [41]

Answer

how many sides are there to the spinner?

Step-by-step explanation:

i need to knowhow many there are in order to give you a probibility

4 0
4 years ago
URGENT ! HELP ! Question is in photo below.
kifflom [539]

\frac{3(x+5)}{2} \cdot 2=21\cdot 2

Above step we use "Multiplication property of equality"

3(x+5)=42

In the above step we "Simplify on both sides of equation"

3x+15 = 42

In the above step we use "Distribution property"

3x+15-15=42-15

The above step is the result of using "Subtraction property of equality"

3x=27

Above step is result of "Combining the like terms"

\frac{3x}{3} =\frac{27}{3}

Above step is the result of using "Division property of equality"

x=9

Above step is result of "Simplifying fractions on either side of equation"

4 0
4 years ago
Which is the initial value that shrinks an exponential growth function by 50%?
ValentinkaMS [17]
Suppose that the exponential growth function is  y = 4^x.

If x = 1, then y = 4^1 = 4.
If x = 3, then y = 4^3 = 64.

Let the initial value be 1/2.

The growth function is now y = 1/2 * 4^x.

If x =1, then y = 2 which is half of the y value before adding the 1/2.

If x = 3, then y = 1/2 * 64 = 32.

Answer: 1/2
7 0
3 years ago
Read 2 more answers
Which expressions are equivalent to the one below?check all that apply. 21^x/3^x
mafiozo [28]
C and E and F are all the correct answers
7 0
3 years ago
Read 2 more answers
If LW = 5x + 2 and LJ = 11x + 2 in the parallelogram below. Find LW.
WITCHER [35]

Answer:

A. 12

Step-by-step explanation:

Recall: one of the properties of a parallelogram is that the diagonals bisect each other. This means that:

LJ = 2(LW)

11x + 2 = 2(5x + 2)

11x + 2 = 10x + 4

11x + 2 - 2 = 10x + 4 - 2

11x = 10x + 2

11x - 10x = 10x + 2 - 10x

x = 2

✅LW = 5x + 2

Plug in the value of x

LW = 5(2) + 2

LW = 10 + 2 = 12

3 0
3 years ago
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