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Elodia [21]
3 years ago
7

2 Select the correct answer. Adrianna is using exponential functions to model the value, in whole dollars, of two investments. S

he represents the value of investment A with a description of its key features and the value of investment B with a table. In both cases, xis the number of years she has held the investment.​
Mathematics
1 answer:
Archy [21]3 years ago
7 0

Answer: A.  

Both investments are decreasing in value, and investment A is decreasing in value faster.

Step-by-step explanation:

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Solve the system by elimination
Alja [10]

First of all we will eliminate x from our equations. In order to do that we will use our first and second equation and then we will use second and third equation.

-2x+2y+3z=0...(1)\\-2x-y+z=-3....(2)

Upon subtracting 2 equation from 1 we will get,

3y+2z=3....(4)

Now we will use second and third equation to eliminate x.

-2x-y+z=-3....(2)\\2x+3y+3z=5....(3)

Adding 2nd and 3rd equation we will get,

2y+4z=2....(5)

Now we will find out y from our 4th and 5th equation.

2*(3y+2z)=2*3....(4)\\2y+4z=2....(5)

Upon subtracting 5th equation from 4th equation we will get,

4y=4\\y=1

Now let us find out z by substituting y's value in 5th equation.

2*1+4z=2\\4z=2-2\\z=0

Now we will find x from by substituting y and z's value in equation 1.

-2x+2*1+3*0=0\\-2x+2=0\\2=2x\\x=1

Therefore, x=1, y=1 and z=0 is the solution of the given system.

3 0
4 years ago
Let ax-by=c, where a,b,c>0. Rewrite the equation in slope-intercept form
Elis [28]

Here we are required to rewrite the equation ax-by=c, where a,b,c>0 In the slope-intercept form.

The slope-intercept form of ax-by=c is ;

y = (a/b)x - (c/b).

There a no. of ways to write the equation of a line; however, the most popular of these ways is the slope-intercept form.

  • The slope-intercept form usually takes the form ; y = mx + c.

Therefore, the equation ax-by=c can be rewritten thus;

  • ax - c = by
  • By divIDing both sides of the equation by b, we have ;
  • (a/b)x - (c/b) = y

Consequently, the slope-intercept form of ax-by=c is ;

  • y = (a/b)x - (c/b).
  • where , (a/b) is the slope(m)
  • and (-c/b) is the intercept(c).

Read more:

brainly.com/question/12184348

4 0
3 years ago
A drawer contains 4 different pairs of gloves. Suppose we choose 3 gloves randomly, what is the probability that there is no mat
sergey [27]

Answer:

The probability that there is no matching pair is 4/7 = 0.5714286.

Step-by-step explanation:

For the first glove we have no restrictions. For the second glove, we have 6 gloves that works for us and 1 that doesnt work (the one that matches the first glove), hence we have 6 possibilities out of 7. Once we pick a good second glove, for the last glove, we only have 4 cases that doesnt match the other two pairs, out of 6 total. This means that the probability that there is no matching pair is 6/7*4/6 = 4/7.

4 0
3 years ago
How would you get 57/5 = 53/4
RSB [31]

Answer: Incorrect BOII

Step-by-step explanation:

3 0
4 years ago
5(2x−3) Simplify the Expression
jarptica [38.1K]

Answer:

10x−15

Step-by-step explanation:

5(2x−3)

5(2x)+5( −3)

10x+5(−3)

10x−15

<h3>Hope it is helpful....</h3>
6 0
3 years ago
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