All categories

3 years ago

Give the function f(x) =2x^2+4x-7 find f(-4)? A -55 B -7 C 9 D 25

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

4 0

Answer:

Step-by-step explanation:

To evaluate f??(- 4) substitute x = - 4 into f(x), that is

f(- 4) = 2(- 4)² + 4(- 4) - 7 = (2 × 16) - 16 - 7 = 32 - 23 = 9 → C

You might be interested in

The angle that is a corresponding angle with angle 1 is?

ololo11 [35]

Answer:

C. 3

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Write an equation for an equation with a slope of 1/2 and goes through the point C(−4,3).

mamaluj [8]

Answer:

c9-3,4)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

tony invests some money in a bank which pays 4% compound interest per year. he wants it to be worth over 6000 at the end of 3 ye

Sliva [168]

Tong is very very cool. He has so so much money he is so cool and he is extremely swag.

5 0

3 years ago

What is the length of AB

Anettt [7]

Answer:

$\boxed{\boxed{\overline{AB}=16}}$

Step-by-step explanation:

In the triangle ABC, m∠ABC=90°. Hence, it is right angle triangle.

$\tan \theta=\dfrac{p}{b}=\dfrac{AB}{64}$ --------1

In the triangle ABD, m∠ABD=90°. Hence, it is right angle triangle.

$\cot (90-\theta)=\dfrac{b}{p}=\dfrac{4}{AB}$

As $\cot (90-\theta)=\tan \theta$ , so

$\tan \theta=\dfrac{b}{p}=\dfrac{4}{AB}$ ---------2

From equation 1 and 2,

$\Rightarrow \dfrac{AB}{64}=\dfrac{4}{AB}$

$\Rightarrow AB^2=64\times 4$

$\Rightarrow AB^2=256$

$\Rightarrow AB=\sqrt{256}$

$\Rightarrow AB=16$

5 0

3 years ago

Please help me it’s urgent please please please

WINSTONCH [101]

Answer:

y = 1

Step-by-step explanation:

Horizontal Asymptote of a function is the horizontal line that the graph of the function approaches but never touches or crosses.

Horizontal Asymptotes take the form of the equation:

y = a

Where a is a number

Looking at the graph, we see that the function goes closer and closer to the line y = 2 but never will touch/cross.

So, this is the horizontal asymptote's equation: y = 1

3 0

3 years ago