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son4ous [18]
3 years ago
14

If 4 T-shirts cost $15, how much will 12 T-shirts cost?

Mathematics
2 answers:
tatuchka [14]3 years ago
6 0

Answer: $45

Step-by-step explanation:

15/4 = 3.75

Each shirt costs $3.75

3.75 * 12 = 45

emmainna [20.7K]3 years ago
4 0

Answer:

45

Step-by-step explanation:

15 divided by 4 give cost of each shirt, which is $3.75

Then, multiply 3.75 , which gives you 45

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Solve for x.<br> 8(x + 1) - 3(x + 4) = 7(2 - x)<br> Ox=11<br> Ox=-11<br> Ox= -1 1 /<br> Ox=11/
inna [77]

Answer:

1.5

Step-by-step explanation:

8(x + 1) - 3(x + 4) = 7(2 - x) \\ 8 x + 8 - 3x - 12 = 14 - 7x \\ 8x - 3x + 7x = 14 - 8 + 12 \\ 12x = 18 \\ x =  \frac{18}{12} \\ x =  \frac{3}{2}  \\  x = 1.5

3 0
3 years ago
Read 2 more answers
Evaluate the expression for s = -2.<br> -15s2 - 9-5 + s) =
Fudgin [204]

Answer:

123

Step-by-step explanation:

s=-2

-15s^2-9(-5+s)

=-15s^2+45-9s

=-15s^2-9s+45

=15(-2)^2-9×(-2)+45

=15×4+18+45

=60+18+45

=123

6 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.)

5 0
3 years ago
Read 2 more answers
A wooden board in the shape of a rectangular prism measures 0.3 m by 2.1 m by 0.1 m and has a mass of 0.07 kg.
Oksanka [162]
Density = Mass/Volume
D = M/V
D = 0.07/0.063
D = 1.111111111111111
 
Volume of a rectangular prism is WHL
Volume of a rectangular prism is <span>0.3 m * 2.1 m * 0.1 m
</span>Volume of a rectangular prism is 0.063
6 0
3 years ago
Original price: $105; markdown:75
Marina86 [1]
105 - 75 = 30 That should do it.
6 0
3 years ago
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