Answer:
2.5
Step-by-step explanation:
you can use pythag theorem and divide c by two:
-3^2+4^2=c^2
9+16= 25
c=5
however, 5/2=2.5
Answer:
X = 2 Y = 1
Step-by-step explanation:
2*2 = 4 and 3*1 = 3 add them and you get 7 add the 2 and 3 and you get 5 when you add 5 and 7 you get 12.
2*2 + 3*1 = 12
Answer:
8.1
Step-by-step explanation:
The perimeter of a circle means the circumference. In this question it says the perimeter of a quarter circle is 17.85 miles and we want to find the quarter circle’s radius.
We know that the perimeter of the quarter circle is 17.85 which means that the 2 radii and the circumference of the circle sum to 17.85.
The formula to work out the perimeter of a quarter circle is
. We can form an equation to work out the radius so,
= 17.85
→ Multiply everything by 2 to get rid of the fraction
4r + π = 35.7
→ Minus π from both sides to isolate 4r
4r = 32.55840735
→ Divide both sides by 4 to isolate 4
r = 8.139601837
The radius of the quarter circle is 8.1 miles to 1 decimal place
90° is the correct answer
Nevermind I zoomed in. The answer is C because ≤ or ≥ needs a solid graph line, and since it is ≥ the shading should be on the top side of the line.