Alright, so what we can take as a given is that arcDE/2= ∠CDE=2x+20 since the arc corresponding to the angle is 2*the angle. To solve for arcDE, we multiply both sides by 2 to get 2(2x+20)=4x+40=arcDE. Since the arcs in a circle add up to 360 degrees and we only have -20+30x and arcDE, we have -20+40+4x+30x=360 using the associative property. Simplifying, we get 20+34x=340. Subtracting 20 from both sides, we get 340=34x. Next, we can divide both sides by 34 to get 10=x.
Answer:
45
Step-by-step explanation:
= (10!) ÷(8!) (10-8)!
(10 × 9)÷2 = 45
Answer:
One order of fries costs 2
Step-by-step explanation:
She got 4.25 + two fries on Monday
She got 6.75 + one fries on Tuesday
Since she spends the same amount of money on lunch every day, both of the money that is spent must be equal.
Let f represent the cost of one order of fries, then equations can be written as follows:
4.25 + 2f (1)
6.25 + f (2)
Since both is equal:
→ 4.25 + 2f = 6.25 + f
→ f = 2
310-85=225
225/25=9
Therefore it will take her 9 weeks
Answer:
B, E and F
Step-by-step explanation:
(1,2) is a solution to the system of equations.
