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anyanavicka [17]
3 years ago
6

What is two numbers that equal 15.2 when you add and 52 when you multiple

Mathematics
1 answer:
Len [333]3 years ago
4 0

x + y = 15.2

x X y = 52

x = 15.2 - y

15.2 - y X y = 52

y X y = 36.8

y^2 = 36.8

y = squareroot 36.8

y = <span>6.06</span>

x + 6.06 = 15.2

x =9.14

9.14 + 6.06 = 15.2

9.14 X 6.06 =55.4

sorry that's the closest I could get to the answer

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You always need some time to get up after the alarm has rung. You get up from 10 to 20 minutes later, with any time in that inte
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Answer:

a) P(x<5)=0.

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Step-by-step explanation:

We have the function:

f(x)=\left \{ {{\frac{1}{10},\, \, \, 10\leq x\leq 20 } \atop {0, \, \, \, \, \, \,  otherwise }} \right.

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d)  We calculate the probability that you will be late to each of the 9:30am classes next week:

P(x>14)=\int_{14}^{20} f(x)\, dx\\\\P(x>14)=\int_{14}^{20} \frac{1}{10} \, dx\\\\P(x>14)=\frac{1}{10} [x]_{14}^{20}\\\\P(x>14)=\frac{6}{10}\\\\P(x>14)=0.6

You have 9:30am classes three times a week.  So, we get:

P=0.6^3=0.216

Therefore, the probability is P=0.216.

e)  We calculate the probability that you are late to at least one 9am class next week:

P(x>9.5)=\int_{10}^{20} f(x)\, dx\\\\P(x>9.5)=\int_{10}^{20} \frac{1}{10} \, dx\\\\P(x>9.5)=\frac{1}{10} [x]_{10}^{20}\\\\P(x>9.5)=1

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