All categories

3 years ago

Find f(-2) for f(x) = 2(4)^x

Mathematics

2 answers:

emmainna [20.7K]3 years ago

8 0

Answer:

f(- 2) = $\frac{1}{8}$

Step-by-step explanation:

To find f(- 2) substitute x = - 2 into f(x) , that is

f(- 2) = 2 $(4)^{-2}$ = 2 × $\frac{1}{4^2}$ = 2 × $\frac{1}{16}$ = $\frac{2}{16}$ = $\frac{1}{8}$

stepladder [879]3 years ago

3 0

Answer:

2(4)^-2

=2/4^2

2/16

1/8

thanks

You might be interested in

Calvin's rug covers 1/8 of the floor space in his bedroom how much floor space would be covered if Calvin had four rugs of that

djverab [1.8K]

Answer:

I dont really know what this is asking but i think it would be 4/8 or 1/2

Step-by-step explanation:

Im sorry if its wrong

7 0

3 years ago

If i have a pay rate of $21.00 and marked up 78.7% and made a 10% profit. how did i get $41.28?

Feliz [49]

Answer:By multiplying with (1+0.01x) where x is the percentage of increase, monthly pay rate of 21$ after marked up 78.7% and 10% profit will be $41.28.

Step-by-step explanation:

Given that pay rate is 21$ and it is marked up by 78.7% and made a 10% profit.

If any value marked up or made a profit of x% then we have to multiply with (1+0.01x) to find the new value.

New pay after 78.7% marked up using above formula is $21X(1+0.01X78.7)=21X1.787=37.527$

Now we have to use above formula again for 10% profit.

Hence new value $=37.527(1+0.01X10)=37.527X1.1=41.2797$ ≈$41.28

5 0

4 years ago

Find the number that makes the ratio equivalent to 4:3.<br> D :18

mash [69]

Answer:

Step-by-step explanation:

4/3=d/18

3d=4*18=72

d=24

4 0

3 years ago

Find the slope of a line with x-intercept 5 and y-intercept -3.

Licemer1 [7]

Answer:

3/5

Step-by-step explanation:

When you are given an x-intercept, the y value will always be 0.

When you are given a y-intercept, the x value will always be 0.

With the intercepts we are given, we can make two points we can solve for the slope with.

(5, 0)

(0, -3)

Now, find the slope with the formula [ y2-y1/x2-x1 ]

-3-0/0-5

-3/-5

3/5 or 0.6

Best of Luck!

8 0

3 years ago

On a road trip, a family drives 350 miles

ExtremeBDS [4]

Answer:

1.14 days (approximately)

Step-by-step explanation:

Family drives 350 miles per day

Let d = days

Equation: 350d = 400

d = 400/350

d is approximately 1.14 days

If you want to answer it without decimals, you should say around 2 days since it's going to take more than one day to travel.

5 0

4 years ago