Answer:
area of a circle = pi*r^2
3 = pi*r^2
r^2 = 3/pi
r = √(3/pi)
diameter = 2*r = 2*√(3/pi)
Answer:
The measure of the angle is 56.
Step-by-step explanation:
The angles correspond so they are equal. Thus, you will set 2x+38 equal to 74-2x. This gives us 4x=36, and when divided that means that x=9. So, you should then plug this into the equation for the angle. This gives us 2(9)+38 and that equals 56.
Answer:
Step-by-step explanation:
35(10⁻⁸) = 35(0.00000001) = 0.00000035
Let x = your number.
x^2 - 21 = 4x. Subtract 4x from both sides.
x^2 - 4x - 21 = 0. Factor.
(x - 7) (x + 3) = 0. Set each term to 0.
x + 3 = 0. Subtract 3 from both sides.
x = -3. This is the negative solution.
Set the other term equal to zero.
x - 7 = 0. Add 7 to each side.
x = 7. This is the positive solution.
B) < because the more negative or the farther away from zero a number is the smaller it is
c) = because if you subtract a negative number you are basically adding
d) = because anytime you multiply a negative by positive your answer will always be negative
a) -11 because -8+3=-5 and -5-6=-11
b) 11 because when you multiply a negative number by another negative your answer will always be positive so -3x-2=6 and 6+5=11
c) -4 because a negative number divided by a positive is always negative
d)42 because a negative number subtracted by a positive number makes a number more negative (btw always solve things in parenthesis first) so -4-3=-7 and again a negative multiplied by another negative is always positive so -7x-6=42
