255 is the answer because 143+86=229, 229+23 is 255
Answer:
Option 1
Step-by-step explanation:
P(glasses' ^ internet) = 3/20 = 0.15
P(glassses') = 8/20 = 0.40
P(internet) = 7/20 = 0.35
(0.40×0.35) = 0.14
Answer:
D √58
Step-by-step explanation:
Draw lines from Points A and B to Point C at (8, 4).
∆ABC is a right triangle.
AC = x₂ - x₁
= 8 - 1
= 7
BC = y₂ - y₁
= 4 - 1
= 3
AB² = AC² + BC²
= 7² + 3²
= 49 + 9
= 58 Take the square root of each side
AB = √58
Answer: 4 * (12.75 + x) = 61
Step-by-step explanation:
Each of the 4 friends paid $12.75 so that is:
= 4 * 12.75
Assuming the tip is denoted as x it would be:
= 4x
Putting them together is:
4 * (12.75 + x) = 61
Solving the equation would give:
4 * (12.75 + x) = 61
51 + 4x = 61
4x = 61 - 51
x = 10/4
x = $2.50
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