The triangles in question 15 are proportional, so they are similar. Meaning that their angles are the same, so <B=<E, or <B=30 degrees.
For #17, the formula for the area of a circle is a=pi*r^2. The radius, in this instance, is 1/2 of 27, or 13.5. Plug it into the formula: a=pi*13.5^2. a=pi*182.25. If you want to simplify it further, a=572.265.
#19, same formula as #17. a=pi*r^2. a=pi*6^2. a=pi*36. a=113.04 or 113m^2.
#20, Wow this is a complicated one. Anyway, the area of the square in the middle is obviously 9m. The area of all of the circles is a=pi*1.5^2 DIVIDED BY TWO, since they're half circles. a=pi*2.25/2, a=7.065/2. a=3.5325. Since there are 4 of them, multiply that number by 4... 14.13. Add 9 to that to get the area of the whole figure: 23.13m(^2). Hope this helps.
I do not understand what you are asking for
I am assuming you want the missing angle, in this case it is 10
Triangle Sum Theorem states that a triangle is equal to 180 degrees
120+50 = 170
180-170
= 10
179 is the heartrate of a 70 year old man!
Answer:
x = -7/5 + 1/5 √22
Step-by-step explanation:
Hope this Helps!!
Mpg = 476/14 = 34 mpg
d = 578 miles = (34 mpg)(x gallons)
578 = 34x
x = 578/34 = 17 gallons
