All categories

3 years ago

Given f(x)=2\x^2-8x+36,find f(-4)

Mathematics

1 answer:

Keith_Richards [23]3 years ago

8 0

$\frac{2}{(-4)^2-8(-4)+36} = \frac{2}{16+32+36} = \frac{1}{42}$

You might be interested in

How would I write a proportion for, “15% Of the toddlers in a preschool class drink water with their lunch. how many toddlers ar

ser-zykov [4K]

Let x be the number of toddlers.

$0.15x=3$

$x=20$

4 0

4 years ago

I need help with this question

AlexFokin [52]

A
Find the two intersections of the lines. The value of x of the intersections will satisfy the system of equations.
Brainliest pls!

3 0

2 years ago

Please help!! I’m stuck on this

beks73 [17]

Answer:

B. $x = -4\,\lor \,x = -1$

Step-by-step explanation:

Let $\sqrt{-4-5\cdot x} = x$ , we solve for $x$ by algebraic means.

1) $\sqrt{-4-5\cdot x} = x$ Given

2) $-4-5\cdot x = x^{2}$ Definition of power/Symmetry of equality

3) $x^{2}+5\cdot x + 4 = 0$ Compatibility with addition/Commutative and associative properties/Existence of additive inverse/Modulative property

4) $(x+4)\cdot (x+1) = 0$ $x^{2}+(a+b)\cdot x +a\cdot b = (x + a)\cdot (x+b)$

5) $x = -4\,\lor \,x = -1$ Result

Hence, the correct answer is B.

7 0

3 years ago

State the type of angles and solve for the given variable.

Evgen [1.6K]

Step-by-step explanation:

the given pair is Alternate Exterior Angle

so their values are equal so,

→ 2x + 26 = 3x - 33

→ 2x - 3x = -33 - 26

→ x = 59

therefore option C is correct

hope this answer helps you dear...take care and may u have a great day ahead!

6 0

3 years ago

NEED THE ANSWER PLEASE...

sesenic [268]

Answer:

The correct answer option is D. $\frac { 3 n ^ { 3 } } { 5 m ^ { 2 } }$ .

Step-by-step explanation:

We are given the following expression and we are to simplify it:

$\frac { 3 m ^ { - 2 } } { 5 n ^ { - 3 } }$

Here the variables $m$ and $n$ are having negative powers. So to change these powers from negative to positive, we will take their reciprocals to get:

$\frac { 3 n ^ { 3 } } { 5 m ^ { 2 } }$

7 0

4 years ago

Read 2 more answers