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SashulF [63]
3 years ago
6

Jerry gave the cashier $40 to pay for 5 shirts. The cashier gave him$ 9.05 in change. Each shirt costs the same amount. What is

the cost in dollars and cents for each shirt?
Mathematics
2 answers:
Norma-Jean [14]3 years ago
7 0
Each shirt is going to have costed $6.19
ladessa [460]3 years ago
4 0

Answer: Each shirt costs 6.19

Step-by-step explanation:

You would have to do 40 - 9.05 and you would get 30.95 then you would have to divide 30.95 by 5 and then you get 6.19.

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If (x, y) = (3, 4) is a solution of the simultaneous equations.
Vinvika [58]
The first thing you want to do is plug in x and y into both equations:

a(3) + b(4) = 4

b(3) + a(4) = 8

rearrange to line up a’s and b’s

3a + 4b = 4

4a + 3b = 8

now you want to choose a or b and multiply each equation by a number to make them have the same amount of a’s or b’s.

4(3a + 4b = 4) = 12a + 16b = 16

3(4a + 3b = 8) = 12a + 9b = 24


Now we subtract the bottom equation from the top and solve for b:

12a + 16b - (12a + 9b) = 16 - 24

7b = -8

b = -8/7


Now we plug back in for b to one of the original equations:

3a + 4(-8/7) = 4

3a + (-32/7) = 4

3a - (32/7) = 4

3a = 4 + (32/7)

3a = (28/7) + (32/7)

3a = 60/7

a = (60/7)/3 = 20/7.


Finally, plug a and b in together to double check using the second equation.

4a + 3b = 8

4(20/7) + 3(-8/7) = ?

(80/7) - (24/7) = ?

56/7 = 8.
4 0
3 years ago
56 POINTS! Find the area of the following figure. Explain how you got your answer.
AleksAgata [21]

Answer:

26.5 units²

Step-by-step explanation:

I am splitting the figure into a rectangle and two triangles to make this easier for me.

The rectangle is b•h so 5•4 = 20 units²

Area of triangle=1/2bh

The left triangle is \frac{1}{2}(3•3) ---> \frac{1}{2}(9) ---> 4.5 units²

The right triangle is \frac{1}{2}(2•2) --->\frac{1}{2}(4) ---> 2 units²

Then add it all up: 20+4.5+2 = <u>26.5</u><u> </u><u>units²</u>

3 0
2 years ago
Solve the exponential equation:
seraphim [82]

Step-by-step explanation:

2⁵ˣ = 8ˣ⁺²

2⁵ˣ = (2³)ˣ⁺²

2⁵ˣ = 2³ˣ⁺⁶

5x = 3x + 6

2x = 6

x = 3

6 0
3 years ago
Kate earns $6 per hour babysitting. She made this table to show the relationship between the number of hours she works (x) and t
pychu [463]
It would be B, (12, 2)<span />
7 0
3 years ago
Read 2 more answers
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Varvara68 [4.7K]
The answer to that question is “S=2”
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