Answer:
(2,1)
Step-by-step explanation:
3x+y = 7
-2x +y = -3
Solve the second equation for y by adding 2x to each side
-2x+2x +y = -3+2x
y = -3 +2x
Substitute into the first equation
3x+ (-3+2x) = 7
Combine like terms
5x -3 = 7
Add 3 to each side
5x-3+3 = 7+3
5x = 10
Divide by 5
5x/5 = 10/5
x=2
Now we need to solve for y
y = -3 +2x
y = -3 +2(2)
y = -3+4
y =1
Answer:
1
Step-by-step explanation:
There are about 110,000 days in 300 years, so the expected number of failures is about 10/11 ≈ 1.
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This assumes the launch conditions are identical for each of the launches, or that whatever variation there might be has no effect on the probability. These are bad assumptions.
Answer:
x=9
Step-by-step explanation:
just trust me it is
Answer: 46 degrees
Explanation:
Angle PRS = 98 degrees
The two smaller pieces add up to this larger angle, so,
(anglePRQ) + (angleQRS) = angle PRS
(3x-8) + (2x+6) = 98
5x-2 = 98
5x = 98+2
5x = 100
x = 100/5
x = 20
Then we can find each angle
- angle PRQ = 3x-8 = 3*20-8 = 52 degrees
- angle QRS = 2x+6 = 2*20+6 = 46 degrees
Notice how 52+46 = 98 to confirm the answers.