1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Harlamova29_29 [7]
2 years ago
10

Write an exponential function in the form y=ab^xy=ab^x that goes through points (0, 20) and (3, 1280).

Mathematics
1 answer:
Arte-miy333 [17]2 years ago
5 0

Answer:

y = 20 4^{x}

Step-by-step explanation:

Use the points to find the values of a and b

Using (0, 20 ) , then

20 = ab^{0} [ b^{0} = 1 ] , then

20 = a

y = 20b^{x}

Using (3, 1280 ) , then

1280 = 20 b³ ( divide both sides by 20 )

64 = b³ ( take the cube root of both sides )

\sqrt[3]{64} = b , that is

4 = b

Then exponential function is

y = 20. 4^{x}

You might be interested in
Solve for t<br> literal equation<img src="https://tex.z-dn.net/?f=y%20%3D%20%5Cfrac%7Bv-u%7D%7Bt%7D" id="TexFormula1" title="y =
balu736 [363]

Answer:

t = (v-u)/y

Step-by-step explanation:

yt = v - u

t = (v-u)/y

4 0
2 years ago
Please answer if you know the answer!<br><br> [Help]
Alinara [238K]

Remember that an exponent means repeated multiplication.

The exponent of 4 means you have four \big(b^2\big)'s mutiplied together:

      \big(b^2\big)\cdot\big(b^2\big)\cdot\big(b^2\big)\cdot\big(b^2\big)

And then each exponent of 2 inside means you have two b's multiplied inside each set of parentheses.:  

    \big(b\cdot b\big)\cdot\big(b\cdot b\big)\cdot\big(b\cdot b\big)\cdot\big(b\cdot b\big)

There are 8 b's there when you expand this out.

6 0
2 years ago
Is circumference cubed, squared, or just left alone?​
irakobra [83]

Circumference is a linear distance. So if the diameter is in feet, then the circumference is also in feet (not square feet or cubic feet)

-------------------------------------

Example:

Let's say we had a circle with diameter d = 10 feet

The circumference is approximately...

C = pi*d

C = 3.14*10

C = 31.4

The circumference is roughly 31.4 feet

The circumference is essentially the distance around the circle's edge. We can use a flexible ruler or a string to help measure out this distance, or you can imagine laying the circle's edge to be placed along a straight line, which is another way to help measure the perimeter.

5 0
3 years ago
75% is simplist form
RoseWind [281]
75% is also equal to 75/100, simplified to 3/4<span />
3 0
3 years ago
Read 2 more answers
Question 2 (1 point) Cynthia uses the chart below to find the cost of shipping a package. Write an expression that Cynthia can u
WINSTONCH [101]

Answer:

6.50w

Step-by-step explanation:

Given that :

Weight ________ Cost ($)

1 ______________6.50

2 _____________ 13.00

3 _____________ 19.50

Cost of package that weighs w pounds

If one pound = 6.50

2 pounds = 13.0

Then, the cost per pound = $6.50

Hence, cost of package that weighs w pounds will be ;

$6.50 * w = $6.50w

6 0
3 years ago
Other questions:
  • Write an equation for the situation There are 8 nickels and d dimes in your pocket. The nickels and dimes have a total value of
    9·2 answers
  • ⭐Please help me figure out this question...Thanx⭐
    14·1 answer
  • in ten years, the population increases from 20,000 to 23,000. Find the actual increase and the percentage increase.
    7·2 answers
  • a rectangle is a four sided flat shaped where every interior angles is a right angle. Therefore, opposite sides aRE PARALLEL and
    12·1 answer
  • Triangle A C B is shown. Angle A C B is a right angle. Altitude h is drawn from point C to point D on side A B, forming a right
    13·2 answers
  • Find the Volume of the retangular prism
    14·2 answers
  • Anyone know the answer??
    13·1 answer
  • Simplify i^5+i^6+ i^7+i^8<br><br> WILL GET 20 POINTS
    15·1 answer
  • Consider the line segment in the graph below.
    14·1 answer
  • PLEASE HELP ME with this question
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!