<h3>
Answer: B) 6</h3>
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Explanation:
Add the equations by adding the terms straight down.
The x terms add to x+x = 2x.
The y terms add to y+(-y) = y-y = 0y = 0, so the y terms go away
The constants add to 5+7 = 12
The z terms add to -z+z = 0z = 0 and those go away as well
After all that adding, we have 2x = 12 which solves to x = 6 after dividing both sides by 2.
Answer:
Sally is 30 and Suki is 20
Step-by-step explanation:
x = Sally's age
y = Suki's age
x = 10 + y
(x - 5) + (y - 5) = 40
x = 30, y = 20
Answer:
b
Step-by-step explanation:
Okay so in order to find the circumference we would first need to find either the diameter or radius of the circle. The perimeter of the square is 40 and each side is equal. 40/4 = 10. So the length of one side is 10. The length of one side would be the diameter of the circle.
Diameter = 10
The only thing that is left is to find the circumference.
The formulas for circumference are:
C =

d
C = 2

r
So just multiply the diameter by pi (3.14)
10 x 3.14 = 31.4
or 10

(Which would be the answer to your problem)
Answer:
1.→n=15
2.→n=0
Step-by-step explanation:
The two expressions given are
⇒A number is said to be rational if it can be expressed in the form of , where ,q≠0.And it's decimal expansion will be either terminating or non terminating repeating.
We have to find smallest value of n, for which each of these two expressions will be rational.
So, 1.→n=15
and 2.→n=0
Have a nice day! -Alpha