B=1
5(b-4)+25=5x6-5x4
5b-20+25=30-20
5b+5=10
5b=5
B=1
Answer:
(I can only answer the first one)
y = 130
x = 30
Step-by-step explanation:
Answer:
(1,4)
Step-by-step explanation:
The circumference of the circle is equal to
C = 2πr, where r is the radius of the circle.
Substituting r = 1, the circumference is equal to
C = 2π
Since the arc ab is π/3, its fraction of the circumference is equal to
Fraction = π/3 ÷ 2π
Fraction = 1/6
Answer:
x = -2 and y = 0
Step-by-step explanation:
5x + y = -10
4x - 7y = -8
Rearrange the first equation to equal y.
5x + y = -10
y = -10 - 5x
Replace y in the second equation with the first equation.
4x - 7y = -8
4x - 7(-10 - 5x) = -8
4x - (-70 -35x) = -8
4x + 70 + 35x = -8
Rearrange the equation to find x.
4x + 35x = -8 - 70
39x = -78
x = -2
Now that you know x, use the rearranged first equation to find y.
y = -10 - 5x
y = -10 - 5(-2)
y = -10 + 10
y = 0
