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Gennadij [26K]
3 years ago
9

Which equation represents an exponential function that passes through the point (2, 80)?

Mathematics
2 answers:
Sloan [31]3 years ago
5 1
The equation is y=mx+c where m is the gradient and c is the y-intercept

allsm [11]3 years ago
3 1

Answer:

Step-by-step explanation:

Given that the exponential function passes through the point (2,80)

Since only one point is given there may be more than one exponential function satisfying this.

One of them we select here is with base 4 and coefficient 5.

i.e.

y=5(4^x)

We can check whether (2,80) lies on it.

Substitute x=2 and y =80

Left side =80

Right side =5(4^2)=80

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Dovator [93]
168 is the answernis it ok

6 0
3 years ago
Please help. URGENT. THANK YOU
adelina 88 [10]

Answer:

6

Step-by-step explanation:

The maximum value of the sin function is at \dfrac{\pi}{2}, when sin is equal to 1. Since you need to multiply pi/12 by 6 to get to pi/2, the maximum amount of people will be at the square after 6 hours. Hope this helps!

4 0
4 years ago
Find the annual interest rate.
slega [8]

The annual interest rate is 3.5%.

Solution:

Given Interest (I) = $26.25

Principal (P) = $500

Time (t) = 18 months

Rate of interest (r) = ?

Time must be in years to find the rate per annum.

1 year = 12 months

Divide the time by 12.

Time (t) = \frac{18}{12}=\frac{3}{2} years

Now, find the rate of interest using simple interest formula.

<u>Simple interest formula:</u>

$I=\frac{Prt}{100}

$26.25=\frac{500\times r\times \frac{3}{2} }{100}

$26.25\times 100 =500\times r\times \frac{3}{2}

$2625 =250\times r\times 3

$2625 =750\times r

$\Rightarrow r=\frac{2625}{750}

⇒ r = 3.5%

Hence the annual interest rate is 3.5%.

8 0
3 years ago
What value of x is in the solution set of 2(3x – 1) 2 4x - 6?<br> 0-10<br> O -5<br> O-3<br> 0 -1
DaniilM [7]
-3 is the correct answer
3 0
3 years ago
Factor f(x)=x2−8x+16<br><br> (A) (x−4)2<br> (B) (x+8)2<br> (C) (x−8)2<br> (D) (x+4)2
Fynjy0 [20]

Answer:

A

Step-by-step explanation:

(x-4)^2 = x^2 -4x -4x + (-4)*(-4)

= x^2-8x+16 as required

3 0
3 years ago
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