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Murljashka [212]
3 years ago
14

An art teacher needs to 5 boxes of markrrs to complete a project with a class of 20 students. How many boxes of markers will he

need to buy for a class of 28 students?
Mathematics
1 answer:
sleet_krkn [62]3 years ago
4 0

20students : 5 boxes

Divided by 5

4students : 1 boxes

28students : x boxes

28/4 = 7

28students : 7 boxes

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A new 2006 Honda head was values at $25000. It depresides at a rate of 13% a year.
CaHeK987 [17]

Answer:

1. It's value in 2009 was $16,462.575

2. It's value in 2020 will be $3,558.

Step-by-step explanation:

The equation for the value of car after t years has the following format.

V(t) = V(0)(1-r)^{t}

In which V(t) is the value after t years, V(0) is the initial value and r is the ratio of depreciation.

In this problem, we have that:

V(0) = 25000, r = 0.13

So

V(t) = V(0)(1-r)^{t}

V(t) = 25000(1-0.13)^{t}

V(t) = 25000(0.87)^{t}

1. What was its value in 2009

2009 is 3 years after 2006, so this is V(3)

V(t) = 25000(0.87)^{t}

V(3) = 25000(0.87)^{3}

V(3) = 16462.575

It's value in 2009 was $16,462.575

2.What will be its value in 2020?

2020 is 14 years after 2006, so this is V14)

V(t) = 25000(0.87)^{t}

V(14) = 25000(0.87)^{14}

V(14) = 3558

It's value in 2020 will be $3,558.

8 0
3 years ago
Consider the system of equations:
vodka [1.7K]

Answer:

(x, y) = (5, 1)

Step-by-step explanation:

To <em>eliminate</em> x, you can double the second equation and subtract the first.

... 2(x +4y) -(2x -3y) = 2(9) -(7)

...11y = 11 . . . . . simplify

... y = 1 . . . . . . divide by 11

Using the second equation to find x, we have ...

... x + 4·1 = 9

... x = 5 . . . . . subtract 4

_____

<u>Check</u>

2·5 -3·1 = 10 -3 = 7 . . . . agrees with the first equation

(Since we used the second equation to find x, we know it will check.)

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Just look at the graph

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Four more than a number is no more than thirteen
Gemiola [76]
If x+4>13 then it would be x>9
8 0
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Describe how to locate (3,-1)
Harrizon [31]

Answer:

its A because you go 3 to the right and you go 1 down because its a negative

4 0
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