Answer:
x = 84
Step-by-step explanation:
21 = 1/4x ....multiply both sides by 4
4 * 21 = (1/4 * 4/1)x
84 = 1x or just 84 = x
28 = 1/3x...multiply both sides by 3
3 * 28 = (1/3 * 3/1)x
84 = 1x or just 84 = x
Answer:
See the explanation below.
Step-by-step explanation:
A perfect square never ends in 2, 3, 7 or 8.
This is the simple observation that will check if the number is a perfect square or not.
Best Regards!
Answer:
Options 2 and 4.
Step-by-step explanation:
Line MK is the perpendicular bisector of line LN, because it cuts through its midpoint.
Line ML is equal to line MN because it is a kite, and a kite has two adjacent sides equal.
well the equation need to be set up as y=mx+b, m being the slope and b being the y-intercept.
so m=1; b=3
your equation is y=1x+3
Answer: 7i
explanation: √-1 is i because a negative square root is imaginary. you can take out the negative from the inside of the square root and replace it with i on the outside. that leaves you with √49, which is 7, and that gives you 7i