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lawyer [7]
2 years ago
6

$2.00 to $4.50. By what percent did the price increase

Mathematics
1 answer:
alexdok [17]2 years ago
5 0
Idk if this is right or not but I got 44%, if this is wrong I’m very sorry :(
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Ill give brainliest pls help i am so stuck
jok3333 [9.3K]

Answer:

Part A:

Since the slopes of the lines are not equal, the pair of equations for lines A and B will have one solution.

Part B:

(3 ,5 ) is the solution to the equations of lines A and B.

Step-by-step explanation:

Part A:

We are required to determine the number of solutions that the pair of equations for lines A and B have. To do this, we shall determine the slope of each line;

A straight line labeled A joins the ordered pair 2, 6 with the ordered pair 6, 2. The slope is defined as;

(change in y) / (change in x)

The slope of line A is thus;

(2 - 6)/(6 - 2) = -1

A straight line B joins the ordered pair 0, 3 with the ordered pair 4.5, 6.

On the other hand, the slope of line B is;

(6 - 3) / (4.5 - 0) = 2/3

Since the slopes of the lines are not equal, the pair of equations for lines A and B will have one solution.

Part B:

What is the solution to the equations of lines A and B?

We first need to determine the equation of each line;

Line A, the slope was found to be -1 and the line passes through (2,6)

The equation of the line in slope intercept form is;

y = -x + c

6 = -2 + c

c = 8

y = -x + 8

On the other hand, the slope of line B was found to be 2/3 and the line passes through (0,3). Therefore, we have;

y = 2/3x + c

3 = 2/3 (0) + c

c= 3

y = (2/3)x + 3

The graph of these two lines is shown in the attachment below. The lines intersect at (3 ,5 ) which is the solution to the equations of lines A and B.

The graphical solution to a system of linear equations is given by the point of intersection of the two lines representing each equation.

3 0
3 years ago
Kyle took out a seven-year loan of $8,000 loan from his bank. The bank charges an interest rate of 5 percent, compounded yearly.
Nookie1986 [14]

Assuming the loan is as described, seven-year loan, which means that Kyle does not repay a cent before seven years.

This is a compound interest problem where n=7 years, interest rate i=0.05, and present value P=8000.

At the end of seven years, Kyle will have to pay

Future value = F = P(1+i)^n = 8000(1.05)^7 = 11256.80 (to the nearest cent)

7 0
3 years ago
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sasho [114]

Answer:

180 divided by 4.5 is 40 so the unit rate is 40 miles per gallon/ 40 over 1/ 40/1

Step-by-step explanation:

8 0
3 years ago
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Write an equivalent expression using the given property.
gayaneshka [121]
3xy -6x

just multiply 3x by y and 3x by -2
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Please Help this is Due in 1 hour and I really dont understand any of this. (Question in Image)
KATRIN_1 [288]

Answer:

Step-by-step explanation:

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