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Novosadov [1.4K]
3 years ago
15

What is the first step in writing f(x) = 3x2 + 6x – 8 in vertex form?

Mathematics
2 answers:
IRINA_888 [86]3 years ago
5 0
Factor out 3 from the first two terms (D)
madreJ [45]3 years ago
3 0
F(x)=3x^2+6x-8
Formula: a=-b/2(a)
a=-6/2(3)=-3
I guess the answer is d)
You might be interested in
Given g(x) = -x – 5, find g(5).
dimulka [17.4K]
Answer is -10

Work: -(5+5)
8 0
3 years ago
8x2 − 5 + 7x4 − 9x − x5
Veseljchak [2.6K]

Answer:

=-\left(x-1\right)\left(x^4-6x^3-6x^2-14x-5\right)

Step-by-step explanation:

Factor out comon Term -1

=-\left(x^5-7x^4-8x^2+9x+5\right)

Factor x^5-7x^4-8x^2+9x+5:\quad \left(x-1\right)\left(x^4-6x^3-6x^2-14x-5\right)

x^5-7x^4-8x^2+9x+5

Use the rational root theorem

a_0=5,\:\quad a_n=1

The dividers of a_{0}: 1, 5, The dividers of a_n: 1

Therefore, check the following rational numbers: ±\frac{1,\:5}{1}

\frac{1}{1} is a root of the expression, so factor out x-1

=\left(x-1\right)\frac{x^5-7x^4-8x^2+9x+5}{x-1}

\frac{x^5-7x^4-8x^2+9x+5}{x-1}=x^4-6x^3-6x^2-14x-5

=x^4-6x^3-6x^2-14x-5

=-\left(x-1\right)\left(x^4-6x^3-6x^2-14x-5\right)

8 0
3 years ago
A statue is 70 cm tall. when its shadow is 61 cm? long, the shadow of a certain tree is 22 m long. how tall is the? tree
Ann [662]
Ratio and Proportions
61:70=ratio of statue

?:22=61:70
?/22=61/70
Move 22 over the equal sign
?=61*22/70
?=1342/70
?=19.1714286 

The tree is 19.1714286m tall

Hope this helps!

8 0
3 years ago
What are factors of the number 5is 5 a factor
AlekseyPX
The factors of 5 are 1 and 5.

1 x 5 = 5
5 x 1 = 5

Hope this helps! :)
8 0
3 years ago
Read 2 more answers
Write the equation of a line in slope intercept form that is parallel to the line y= 1/3x + 5 and passes through (-9, 5)
vladimir2022 [97]
Find the slope of line 1
The equation of line 1 is y = (1/3)x + 5
m = 1/3

Find the slope of line 2
Line 2 is parallel to line 1. Parallel lines have the same number of slope. So the slope of line 2 is 1/3

Find the slope-intercept form of equation, with m = 1/3 and (-9,5)
General formula
y - y₁ = m(x - x₁)

Input the number to the formula
y - y₁ = m(x - x₁)
y - 5 = 1/3(x - (-9))
y - 5 = 1/3 (x + 9)
y - 5 = (1/3)x + 3
y = (1/3)x + 3 + 5
y = (1/3)x + 8

The equation is y = (1/3)x + 8
7 0
3 years ago
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