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expeople1 [14]
3 years ago
13

What are the zeros of the function f(x) = x2 + 5x + 5 written in simplest radical form?

Mathematics
2 answers:
AnnyKZ [126]3 years ago
4 0
Given the function f(x)=x^2+5x+5 , to get the zeros we solve using quadratic formula;
x=[-b(+or-) sqrt(b^2-4ac)]/(2a)
from our function;
a=1,b=5, c=5

thus,

x=[-5(+or-)sqrt(5^2-4*1*5)]/(2*1)
x=[-5(+or-)sqrt(25-20)]/2
x=[-5+/-sqrt(5)/2

The answer is option C
kow [346]3 years ago
4 0

Answer: C on edge 2020

Step-by-step explanation:

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What is x^2-9x+4=0? please help.. i’m using this method: (x+b)^2-b^2=x^2+2bx
AnnZ [28]

Answer:

see explanation

Step-by-step explanation:

Given

x² - 9x + 4 = 0 ( subtract 4 from both sides )

x² - 9x = - 4

Using the method of completing the square

Add ( half the coefficient of the x- term )² to both sides

x² +2 (- \frac{9}{2})x + \frac{81}{4} = - 4 + \frac{81}{4}

(x - \frac{9}{2})² = \frac{65}{4}

Take the square root of both sides

x - \frac{9}{2} = ± \sqrt{\frac{65}{4} } = ± \frac{1}{2}\sqrt{65}

Add \frac{9}{2} to both sides

x = \frac{9}{2} ± \frac{1}{2}\sqrt{65} ← exact solutions

3 0
3 years ago
Write the standard form of the line that contains a slope of 2/3 and passes through the point (1,1). Include your work in your f
Simora [160]

Answer:

2x - 3y = -1

Step-by-step explanation:

Standard form: Ax + By = C

Given: slope = 2/3 and  passes through the point (1,1)

Point slope form: y - y1 = m(x - x1)

Plug in

y - 1 = 2/3(x - 1)

Multiply both sides by 3

3(y - 1) = 2(x -1)

Distributive property

3y - 3 = 2x - 2

Since standard form: Ax + By = C so you can re-write the equation:

2x - 2 = 3y - 3

Subtract 3y from both sides

2x - 3y = -3

Add 2 to both sides

2x - 3y = -1

Answer in standard form: 2x - 3y = -1

8 0
3 years ago
Can someone help me with question 16 please?
Step2247 [10]
Let 's' be the allowed speed.

If the maximum speed is 70 and the minimum is 40, we know 's' is between these two values inclusively, i.e. 40 ≤ s ≤ 70

*Remember for inequality symbols, whether strict or inclusive, the term on narrow side is "less than" the term on the broad side
5 0
3 years ago
The Angle of depression from the top of the flagpole to an object on the ground it's 33° if the object is 60 feet from the base
N76 [4]

Answer:

The flag pole is 38.96 feet tall.

Step-by-step explanation:

The angle of depression from the top of the flagpole to an object on the ground is 33°.

The object is 60 feet from the base of the cliff.

We need to find the height of the flag pole.

Here, base, B = 60 feet

We know that,

\tan\theta=\dfrac{P}{B}

Put all the values to find P.

P=B\times \tan\theta\\\\P=60\times \tan(33)\\\\P=38.96\ ft

So, the flag pole is 38.96 feet tall.

6 0
3 years ago
PLEASE HELP THANK YOU.
Sindrei [870]
I'm not entirely sure about these, and the last one was tricky but i hope this helped.

4 0
3 years ago
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