This question is way to hard
Answer:
See below:
Step-by-step explanation:
So first, Paul has a number that he got before he multiplied it, we can call that 
, and for his answer after doubling it. we'll call it 
.
So with this information, we know that 
so we can use that to make an equation.
We can solve it by first dividing on both sides and getting our answer.
Cheers! We get our final answer of 6.55.
You can use elimination by adding the two equations to "cancel out" one of the variables. in this example y will cancel out.
2x + y = 3
+
2x - y = 4
________
2x = 6
x = 3
now that we know our x value, we can plug it into one of the other equations to get our y value.
2(3) + y = 3
6 + y = 3
y = -3
your answer for this system is x=3, y=-3
Answer:
b
Step-by-step explanation:
Answer:
Given that an image attached with this prove.
1. AD = AB, CD=CB 1. Given
2. OD = OB 2. By definition, the diagonal connecting vertec angles bisects the other diagonal
3. OA = OA 3. By reflexive property
4. triangle AOB = triangle AOD 4. By SSS congruence
5. angle AOB = angle AOD 5. By CPCTC
6. angle AOB = angle AOD = 90 6. both angles addup to 180
7. AC ⊥ DB 7. definition of right angles
Step-by-step explanation:
