Mathematics High School

Question 3 of 25
Find f(-3) for f(x) = 4(2)^x
Please answer this as fast as you can need it for today

Answers

Answer 1

Answer: [tex]f(-3)=\dfrac12[/tex]

Step-by-step explanation:

Given: [tex]f(x)=4(2)^x[/tex], which is an exponential growth function.

To evaluate: f(-3)

Substitute x=-3 in the given function, we get

[tex]f(-3)=4(2)^{-3}\\\\=4(\dfrac{1}{2})^3\ [a^{-n}=\dfrac1{a^n}]\\\\=4\times\dfrac1{2^3}\\\\=4\times\dfrac18\\\\=\dfrac12[/tex]

Therefore, the value of [tex]f(-3)=\dfrac12[/tex].

Related Questions

i’m giving out 25 points for the answer

Answers

Answer:

angle p+30=180=

=180-30=150

angle Q+55=180

=180-55=125

angle R+95=180

=180-95=85

help plsssssss with calculations ill give brainlist

Answers

Answer:

ill try to answer that has soon has am done with these one

Step-by-step explanation:

Answer :

ill try to answer that has soon has

am done with these one

y-intercept: (___,___)
r-intercept: (___,___)

Answers

Answer:

y= 0,4 x=0,3

Step-by-step explanation:

Rewrite in slope-intercept form.
10x + 2y = 8
Enter your answer in the form y=mx+c
Simplify your answer if possible using integers or simplified fractions. Example: y=3/4x-2
10x+2y=8

Answers

Answer:

y = -5x + 4

Step-by-step explanation:

Solve for y

10x + 2y = 8

2y = -10x + 8

y = (-10x)/2 + 8/2

y = -5x + 4

For each of the following angles, name the angle that is congruent.

Answers

Answer:

M is congruent to P, N is congruent to Q, and O is congruent to R.

Step-by-step explanation:

Congruent angles are angles with exactly the same measure.

PLS HELP ASAP 24 POINTS

Answers

Answer:

Area: 8

Perimeter:12

Step-by-step explanation:

Length: 4

Width: 2

Not sure what you're asking lol

Area: length x width --> 8

Perimeter: 2l x 2w --> 12

Answer:

the area is 8 it starts in 0 and ends in 4 and goes down to -2

Step-by-step explanation:

still what do u want us to answer

20% of____ is 15 ????

Answers

Answer:

The Correct Answer is 3

Step-by-step explanation:

my question is in the attachment

Answers

Answer:

x = 1

Step-by-step explanation:

[tex]\frac{4x-1}{2}+\frac{3x+4}{3}= \frac{23}{6}[/tex]

[tex]\frac{3(4x-1)}{6}+\frac{2(3x+4)}{6}= \frac{23}{6}[/tex]

[tex]\frac{12x-3+6x+8}{6}=\frac{23}{6}[/tex]

18x + 5 = 23

18x = 23 - 5

18x = 18

x = 1

Therefore, x = 1 is the solution of the given expression.

I need help for school​

Answers

Its 11 cause I’m built different

Which value of y makes the equation 13 - y = 17 true

A y= -13
B y= -4
C y= 4
D y=13

Answers

B:-4,if you subtract 13 minus -4 it will equal 17, try it in a calculator if you don’t agree :)

Two students are both working on the same problem: A box of laundry soap has 25% more soap in its
new box. The new box holds 2 kg. How much soap did the old box hold?

Answers

Answer:

The answer would be 1.5kg.

Step-by-step explanation:

2/.25=.50

.50x4=2

100%-25%=75%

75%=1.5kg

help now pls thank bye lol

Answers

Answer: 4 roots

Step-by-step explanation: Just look at the highest power and that will tell you the amount of roots, unless there are imaginary roots

I really need help with this!!! If i get a correct answer ill make another question for more points. best answer gets brainliest

When solving for a quantity in a formula, what are the most important things to consider? What process do you follow in order to be sure that you've correctly solved for some quantity? Explain your reasoning, and give examples to help illustrate your ideas. Don't forget to respond to your peers' posts by reviewing what they've read and attempting to apply their ideas to other examples. Remember, your goal is to demonstrate whether you've made sense of their ideas or not, and to contribute to help everyone improve their explanations.

Answers

14


2
Pre-algebra

If the student is taking this branch of mathematics, they are expected to show their work because they're expected to solve specific problems in a certain way. Ex, when they're solving for a variable they're supposed to manually find the value of x by isolating it rather than entering the left and right hand of the equal sign in the calculator (in slope-intersect form) and finding the intersection point. If they only get the correct answer without showing work, we give them 2 points. 8 more points if work is shown.

Algebra

Students in algebra are expected to know how to get the correct answer. We don't care how they do it, as long as it's the correct answer.

Solve the inequality
−y/2 ≤ 4

Answers

Answer:

4 is greater

Step-by-step explanation:

A negative divided by a positive = a negative.

No matter what y is, it will be a negative number.

Meaning, 4 a positive number, will be greater no matter what y is

What is the largest value of $k$ such that the equation $6x - x^2 = k$ has at least one real solution?

Answers

Step-by-step explanation:

6x - x² = k

=> x² - 6x + k = 0,

For there to be at least 1 real solution,

The discriminant b² - 4ac must be at least 0.

We have (-6)² - 4(1)(k) >= 0.

Therefore 36 - 4k >= 0, k <= 9.

Hence the largest value of k is 9.

Answer:

9

Step-by-step explanation:

Rearranging, this is the equation x^2 - 6x  = -k. Completing the square, we add 9 to both sides, and x^2 - 6x + 9 = 9 - k. Factoring the left side, we have (x - 3)^2 = 9 - k. In order for this equation to have at least one real solution, the right-hand side must be nonnegative. Thus, we have 9 - k [tex]\geq[/tex] 0 and k [tex]\leq[/tex] 9. Thus, the largest possible value of k is 9.

Solve the following system of equations.
3x + 5y = 5
7x + 5y = 25

i need the value of x and y.

Answers

Answer:

x=5 and y=-2

Step-by-step explanation:

3x+5y=5

-(7x+5y=25)

-4x=-20

x=5

plug 5 into one of the equations. 3(5)+5y=5

y= -2

Find the value of the variables I’ll mark the brainiest!

Answers

Answer:

x=15, y=12, z=20

Step-by-step explanation:

y is the geometric mean of the two segments it divides.

9 · 16 = y^2

y=12

Use the pythagorean theorem to find x and z.

16^2 + 12^2 = z^2

z^2 = 400

z=20

9^2 + 12^2 = x^2

x^2 = 225

x=15

can you help me please ​

Answers

Answer:

sine 23 = x/21

Multiply both sides by 21

21 x sine 23 = x

Now, use a calculator and find the answer of the 21 times the sine of 23:

x = -17.7706284876

Give 5 Examples of Linear Equation in Two Variables​

Answers

Dang bro I got no clue

Answer:

Some examples of linear equations in two variables are: 1.2s + 3t = 5, p + 4q = 7, πu + 5v = 9 and 3 = 2 x – 7y. Note that you can put these equations in the form 1.2s + 3t – 5 = 0, p + 4q – 7 = 0, πu + 5v – 9 = 0 and 2 x – 7y – 3 = 0, respectively.

PLEASE HELP ITS IMPORTANT omll

Answers

Answer:

F(x)= 3x-4

Step-by-step explanation:

To find the slope use the formula y2-y1  

                                                          x2-x1

(2,2)

(0,-4)

-4-2 = -6   = 3x

0-2      -2


For Exercises 1 and 2, use the figure at the rights
1. What is m 24 ifm 28 = 40°?
1.
A. 500
B. 180°
C. 70°
D. 40°

Answers

D. 40 degrees because angle 8 is the same as angle 4. angle 4 is 50 degrees

PLS JUST GIVE ME ALL THE ANSWERS TO THIS WORKSHEET I BEG U ANYONEEE

Answers

Ask your friends because I don’t know

How many calories will Darrel burn in 1 minute while kayaking

Answers

Answer:

210 calories : )

Step-by-step explanation:

hope this helps

Which is equivalent to 42x +49.

A. 2 (21 + 24)

B. 8x + 13

C. 4 (2x + 9)

D. 7 (6x + 7​

Answers

Answer:

D. 7 (6x+7)

Step-by-step explanation:

Factor  7  out of  42x  +  49

The answer is
D. 7(6x+7)

which expression are equivalent to this exponential expression

Answers

Answer:To create an equivalent expression, you simply need to move the base and exponent to the other side of the fraction line and change the exponent to positive: 1/(24)

Step-by-step explanation:

What is the quadrilateral

Answers

Answer:

a quadrilateral is a four sided shape that has four straight sides

3x +7y=10 and I’m solving for y and I got multiple awnsers

Answers

Answer:

y = ~-0.43x + 1.43

Step-by-step explanation:

You are solving for Y.

3x + 7y = 10

7y = -3x + 10 ^ Subtraction Property of Equality

y = ~-0.43x + 1.43 ^ Division Property of Equality

Solve for X

Log x - log 3 = log(x-2)

Please please help

Answers

Step-by-step explanation:

[tex]log \frac{a}{b} = loga - logb[/tex]

logx - log3 = log(x-2)

[tex] log( \frac{x}{3} ) = log(x - 2)[/tex]

[tex] \frac{x}{3} = x - 2[/tex]

x = 3(x - 2)

x = .......

-3+4b=3(b-2)
what do I have to do slove both sides

Answers

Answer:

b=-3

Step-by-step explanation:

distribute 3(b-2) and you get 3b-6.

-3+4b=3b-6

add 3 on both sides.

4b=3b-3

-3b on both sides

b=-3

how would I simplify this?
8/13 ln 3 = ln h/12

Answers

Answer:

Step-by-step explanation:

I'll assume that you meant

(8/13) ln 3 = ln h/12

Applying rules of logs, we get:

(8/13) ln 3 = ln h - ln 12

                = ln h - ln 3 - ln 4         <=  because ln b*c = ln b + ln c

Then (8/13) ln 3 + ln 3 = ln h - ln 4, or

(21/13) ln 3 + ln 4 = ln h  

3^(21/13) * 4 = h                 <=  because ln b*c = ln b + ln c

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