I need help on that to I have a test and need it to
The constant π is defined as the ratio of the circumference of a circle with respect to its diameter, mathematically:
π=C/d which can be rearranged to
C=πd
Since the diameter is equal to twice the radius of the circle, ie d=2r
C=2πr dividing both sides by 2π gives you:
r=C/(2π), the "spoke" in our problem is equal to the radius of a circle, and we are told that C=42in so:
r=42/(2π) in
r=21/π in
r≈6.68 in (to nearest hundredth of an inch)
Answer:
Substitution Property
Step-by-step explanation:
The change from the first equation to the final equation is m∠A has been replaced by m∠B. In other words, m∠B was substituted for m∠A.
Answer:
A) x = y+25
B) 35 minutes
C) 35 ≠85
Step-by-step explanation:
A)
As we know
X = number of minutes Eric plays basketball
Y = Number of minutes he plays volleyball
x+y= 95
x = y+25
B)
We will replace
x=y+25 in the first equation and we will get (y+25) + y =95
On solving,
y+25+y =95
25+2y=95
2y=95-25
2y=70
y = 70/2
y = 35 minutes
C) X = 35
x+y= 95
35+y =95
y= 95-35
y = 60 minutes
Substituting value of Y as 60 , we get
x = y+25
35 = 60+25
35 ≠85
You can try to use the points: (3, 3) and (-3, -1)
if you plug the values listed above using the slope formula : y2 - y1/x2 - x1
you should get the answer: - 4/6 which is simplified to 2/3
hope this helps :)
