Answer: Alex is 15 years
Step-by-step explanation:
Since Alex is w years old and her sister is three years younger than him. The age of his sister will be:
= w - 3.
We will then multiply their ages and equate to 180. This will be:
w × (w - 3) = 180
w² - 3w = 180
w² - 3w - 180 = 0
w² - 15w + 12w - 180 = 0
w(w - 15) + 12(w - 15) = 0
(w + 12)(w - 15)
w - 15 = 0
w = 0 + 15
w = 15 years
Alex is 15 years, her sister is 12 years.
Expression: 8m+10m+10m+18m
Perimeter: 46
60×1.5=90 1.5 hours equals 10:30
9:30 + one hour equals 10:30 and 90 miles away
In conclusion they will meet at 10:30
Answer:
They are intersecting.
Step-by-step explanation:
Since their slopes can't be the same (because their product couldn't be negative in that case), they have to intersect at one point or another.
XWhich statement is true for the circumcenter of a right triangle?Which statement is true for the circumcenter of a right triangle?