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VMariaS [17]
3 years ago
15

Mikayla withdraws $20 on 4 different days durin the week.Find the total change in her account balance after the withdrawls.

Mathematics
1 answer:
Stells [14]3 years ago
7 0

Wait what did she have in her account? We need to know to answer.

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The function LaTeX: f\left(x\right)=2\cdot5^xf ( x ) = 2 ⋅ 5 x can be used to represent an exponential growth curve. Which of th
masha68 [24]

Answer:

(2,20)

Step-by-step explanation:

The given function is

f(x) = 2 \cdot \:  {5}^{x}

To see which point is not on this curve, we must substitute the points to see which does not satisfy the equation;

For the first point we substitute x=3 and f(x)=250

250= 2 \cdot \:  {5}^{3}  \:  \\ 250 = 2 \times 125 \\ 250 = 250

This is true.

For the second point (2,20), we put x=2 and y=20 to get:

20= 2 \cdot \:  {5}^{2}  \\ 20 = 2 \times 25 \\ 20 = 50

This is false, hence (2,20) does not lie on this curve.

For (1,10), we have:

10= 2 \cdot \:  {5}^{1}  \\ 10 = 10

This is also true

Finally for (2,50), we have;

50= 2 \cdot \:  {5}^{2}  \\ 50 = 2 \times 25 \\ 50 = 50

This is also true.

4 0
3 years ago
1.) Write an equation of the line that passes through the point (3,-2) and is
GarryVolchara [31]

Answer:

y = 2x - 8

Step-by-step explanation:

8 0
2 years ago
The blue segment below is a diameter of O. What is the length of the radius of the circle?
svlad2 [7]
Diameter= 2 times the radius

2r=d
2r=10.2
R= 10.2/2
R=5.1

Therefore, the radius is 5.1 units which makes the answer choice C correct.

Hopefully, this helps!
5 0
3 years ago
Read 2 more answers
Simplify the expression (-8)^-3x15^0
avanturin [10]
The answer is -1 over 512 (fraction form)
ANSWER: -1/512
5 0
2 years ago
What does this problem equal?show your work.<br><br>-12(k+4)=60
HACTEHA [7]
Hey there!

First, divide both sides by 12
-12(k+4)/-12= 60/-12 and you would getk+4=5
Now subtract 4 from both sides

k+4-4= 5-4

k=-9
3 0
3 years ago
Read 2 more answers
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