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Sophie [7]
3 years ago
15

Which of the following represents an exponential function

Mathematics
1 answer:
Greeley [361]3 years ago
4 0

Answer:

what are the options

Step-by-step explanation:

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Please answer!!!! please!!!!!!
olga55 [171]

The problem here is:  Too many words.

If you boil the problem down to the bare facts, the question is:

             "$210 is 15% of what number ?"

I'm pretty sure you can take it from there,
but here's the rest of it anyway:

                                                $210  =  15% of (March amount)

                                                $210  =  0.15 x (March amount)

Divide each side by  0.15 :     $1400 = March amount .

Check:
1400 + 210 =  1610
1.15 x 1400 = 1610                                      yay!
5 0
2 years ago
Y=x^2 -9x at x = 4 Find an equation of the tangent an an equation of the normal
Montano1993 [528]

The tangent line to <em>y</em> = <em>f(x)</em> at a point (<em>a</em>, <em>f(a)</em> ) has slope d<em>y</em>/d<em>x</em> at <em>x</em> = <em>a</em>. So first compute the derivative:

<em>y</em> = <em>x</em>² - 9<em>x</em>   →   d<em>y</em>/d<em>x</em> = 2<em>x</em> - 9

When <em>x</em> = 4, the function takes on a value of

<em>y</em> = 4² - 9•4 = -20

and the derivative is

d<em>y</em>/d<em>x</em> (4) = 2•4 - 9 = -1

Then use the point-slope formula to get the equation of the tangent line:

<em>y</em> - (-20) = -1 (<em>x</em> - 4)

<em>y</em> + 20 = -<em>x</em> + 4

<em>y</em> = -<em>x</em> - 24

The normal line is perpendicular to the tangent, so its slope is -1/(-1) = 1. It passes through the same point, so its equation is

<em>y</em> - (-20) = 1 (<em>x</em> - 4)

<em>y</em> + 20 = <em>x</em> - 4

<em>y</em> = <em>x</em> - 24

3 0
3 years ago
Find the values of x and y.
tia_tia [17]

Answer:

x= 45

y= 60

Step-by-step explanation:

For x:

The angles we have are 45 and 90

180°- 45 - 90 = 45

x= 45

For y:

The angles are 30 and 90

180°- 30 - 90 = 60

y= 60

4 0
2 years ago
he work of a student to solve the equation 4(2x − 4) = 8 + 2x + 8 is shown below: Step 1: 4(2x − 4) = 8 + 2x + 8 Step 2: 6x − 8
KiRa [710]

Answer:

step 2: 8x-4=2(6+x+6)

Step-by-step explanation:

4(2x - 4) = 8 + 2x + 8 \\ 8x - 16 = 16 + 2x  here \\ 8x - 2x = 16 + 16 \\ 6x = 32 \\  \frac{6x}{6}  =  \frac{32}{6}  \\ x = 5

4 0
1 year ago
Read 2 more answers
POLYGONS ABCD &amp; EFGH ARE SIMILAR. WHAT IS THE PERIMETER OF EFGH WHEN AD = 12, BC = 8, FE = 15, FG = 10, and GH = 5?
zzz [600]
It would be helpful to draw the figures, you will see that for ABCD there 2 lacking side lengths which are AB and CD. For EFGH, there is one lacking side length which is EH. We use the ratios of the corresponding sides to determine side EH. We do as follows:

FG / BC = EH / AD
10 / 8 = EH / 12 
EH = 15

Therefore, the perimeter would be:

15+10+5+15 = 45 units
5 0
3 years ago
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