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3 years ago

Find the zeros of the function f(x) = x2+ 6x + 18. The 2 is square

1 answer:

6 0

To find the number of zeros in the quadratic equation we factorize it as follows:
f(x)=x²+6x+18
solving using completing square methods we obtain:
x^2+6x=-18
c=(b/2a)^2=9
thus
x²+6x+9=-18+8
x²+6x+9=-9
(x+3)²=-9
hence
x=-3+/-3i
the roots are:
x=-3+3i or x=-3-3i

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Select the correct answer.<br> Solve this inequality for x: -46 − 8x > 22.

Dmitry [639]

Answer: x < - 8.5

Step-by-step explanation:

-46 - 8X > 22

+46. +46

-8x > 68

x < - 8.5

5 0

3 years ago

Find the value of x. A. 53–√ in B. 241−−√ in C. 55–√ in D. 9

castortr0y [4]

Answer:

<h2>x = 5√3 inches</h2>

Step-by-step explanation:

Since the triangle is a right angled triangle we can use Pythagoras theorem to find the missing side x

Using Pythagoras theorem we have

${a}^{2} = {b}^{2} + {c}^{2}$

where a is the hypotenuse

Substitute the values into the above formula

The hypotenuse is 10 inches

We have

${10}^{2} = {5}^{2} + {x}^{2}$

${x}^{2} = {10}^{2} - {5}^{2}$

${x}^{2} = 100 - 25$

${x}^{2} = 75$

We have the final answer as

<h3>x = 5√3 inches</h3>

Hope this helps you

3 0

3 years ago

find the slope of the line that contains the following points A : [ 17 , -12 ] and [ 17 , 8 ] and B [ 6 , -2 ] and [ -3 , 1 ]

Svetradugi [14.3K]

1/9 because i you plug in two of the points into y2 -y1 over x2 -x1 thats what you get.

4 0

3 years ago

Why is it helpful to find the mean of the data set?

HACTEHA [7]

The mean of a set of data is the average, so when writing a conclusion or justifying a solution, instead of listing all your data you can say "the average of the data collected was _____"

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3 years ago

I need help and I SUCK at mathematics can yall help me I'm in 5th grade

nalin [4]

Answer:

Step-by-step explanation:

1 1/4 = 1.25

1 4/5 = 1.8

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6 0

3 years ago

Read 2 more answers