The diagonals of a square bisect one another and are perpendicular.
so 21x+ 16.5 = 90
subtract 16.5 from each side
21x = 73.5
divide by 21 on each side
21x/21 = 73.5 /21
x = 3.5
Answer:
4 1/2
Step-by-step explanation:
2 1/3 pounds and 2 1/6 pounds
convert the 1/3 pounds into x/6 by multiplying both numerator and denominator by 2 which equals 2/6
Then add 2+2 which gives 4 and the 1/6 and 2/6 which is equal to 3/6 which simplifies into 1/2.
4 1/2
Answer:
Simplify the expression.
30.9ft
Step-by-step explanation:
you ' re welcome ! grandma loves you < 33 ; )
50% is more as 50% of 60 is 30. if it was 25 dollars off, it would be 60-25 which is 35. in conclusion the green coupon or the 50% off coupon, is better!
Answer:
The third answer
Step-by-step explanation:
(side note: You probably need to use a calculator that can calculate pi)
The formula to find the area of a circle is pi r squared.
In this case, pi times r squared is 19.63495....... continued
This is probably going to be rounded
so... 19.63
For all of the circles, this is multiplied by 4.
This is 78.52
The area of the square is 100 cm since 10 times 10 is 100
You take 100 cm and then subtract it by 78.54
Voila! now you have 21.46