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belka [17]
3 years ago
6

Carols pencil is 18 centimeters long.how many millimrters long is the pencil.

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
8 0
Each centimeter is made up of 10 mm. Multiply 18 by 10 and you'll get your answer.

18 \times 10 = 180mm
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WILL GIVE 40 BRAINLY
irina [24]

Answer:

(3,2)

Step-by-step explanation:

The method of variable substitution is a way of solving a system of equations. It involves solving one equation for a variable and then substituting in the expression that represents the value of the solved variable into the other equation. After doing so, one can solve for the unknown variable and then backsolve for the other variable.

y=-2x+8\\y=x-1

In this system, the second equation is already solved for (y), thus one can substitute that expression into the other equation in the system.

x-1 = -2x + 8

Now solve using inverse operations,

x -1 = -2x + 8\\+2x\\\\3x - 1 = 8\\+1\\\\3x =9\\/3\\\\x = 3

Backsolve to find the value of (y), substitute in the value of (x), and solve for the value of (y).

y=x - 1\\

Substitute,

y=(3)-1

Solve,

y=2

Thus, the answer to this system of equations is the following, (3,2).

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