All categories

1 year ago

Evaluate the expression when x=-5 X^2 + 6x-9

Mathematics

1 answer:

d1i1m1o1n [39]1 year ago

5 0

The value of the function f(x) = x² + 6x - 9 when x = -5 is -14.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

An independent variable is a variable that does not depends on other variable while a dependent variable is a variable that depends on other variable.

Given that:

f(x) = x² + 6x - 9

When x = -5:

f(-5) = (-5)² + 6(-5) - 9 = -14

The value of the function f(x) = x² + 6x - 9 when x = -5 is -14.

Find out more on equation at: brainly.com/question/2972832

#SPJ1

You might be interested in

Find a in the figure below and place the value in the empty box

AleksAgata [21]

Answer:

a = 12m

Step-by-step explanation:

In order to solve this problem we will need to know the Pythagoras theorem that states that in a right angled triangle the square of the hypotenuse (the side opposite to the right angel) is equal to the sum of the squares of the other two sides. This theorem can be written as an equation....

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

Now we can see that we can easily find the missing value by using this theorem. We just have to substitute the values. And we get the following

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

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

$a^{2} = 15^{2} - 9^{2}$

$a^{2} = 225 - 81$

$a^{2} = 144$

$a = \sqrt{144}$

$a = 12$

7 0

3 years ago

Solve for substitution 8x+2y=13 and 4x+y=11

damaskus [11]

Solving for X:
1) y=-8x+6.5 y=-4x+11
2) -8x+6.5=-4x+11
3) -8x=-4x+11-6.5 (Subtract 6.5 from both sides)
4) -8x+4x=11-6.5 (Add 4x to both sides)
5)-4x=4.5
5)x=-1.125

Solving for Y:
y=-8(-1.125)+6.5
y=9+6.5
y=15.5

y=-4(-1.125)+11
y=4.5+11
y=15.5

x=-1.125
y=15.5
or
(-1.125,15.5)

7 0

4 years ago

La ecuación y su

Romashka [77]

Answer:

70 I thinkk.....

4 0

3 years ago

Write an expression that is equivalent to (4x+11)+7x

Juliette [100K]

Answer:

Step-by-step explanation:

11x+11

or you could do

11(x+1)

4 0

3 years ago

410−x/7 +70=120. please answer fast i will give brainliest

galben [10]

410 - x/7 +70 = 120
410+70-120=x/7
360=x/7
X =2520

4 0

4 years ago

Read 2 more answers