Solve each system using substitution or elimination. Show all required work. X^2+y^2=40 -x+y=-8

Mathematics

1 answer:

mr_godi [17]3 years ago

4 0

Answer:

steps and answers in the pic..hope u can understand the calculations...

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If Susie is late for school one particular day of the week, the probability she arrives on time the next day is 0.8. If she arri

Andre45 [30]

Answer:

0.273 = 27.3% probability that she was late on Thursday.

Step-by-step explanation:

On time on Monday, late on Thursday:

Possible outcomes (tuesday-wednesday-thursday).

on time(0.7 probability) - on time(0.7 probability) - late(0.3 probability)

on time(0.7 probability) - late(0.3 probability) - late(0.2 probability)

late(0.3 probability) - on time(0.8 probability) - late(0.3 probability)

late(0.3 probability) - late(0.2 probability) - late(0.2 probability).

What is the probability she was late on Thursday?

Sum of these four outcomes. So

$p = 0.7*0.7*0.3 + 0.7*0.3*0.2 + 0.3*0.8*0.3+0.3*0.2*0.2 = 0.273$

0.273 = 27.3% probability that she was late on Thursday.

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2 years ago

Find the least common multiple of 8c4 and 6c2 .

Ksju [112]

The least common multiple is the smallest term that can be divided to both terms without any remainder. For the two terms 8c^4 and 6c^2, you can determine it into two part. First, you find the LCM for 8 and 6. You find the prime number that is common between the two. That would be 2. For the variables c^4 and c^2, the 'prime variable' is c. Therefore, the least common multiple for 8c^4 and 6c^2 is 2c.

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3 years ago

Das is a question for sombody<br> 1+6/3=what (simplify it)

ipn [44]

It would be 3 that is my answer

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3 years ago

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Write in index form using a unit fraction : 6√19

Fynjy0 [20]

$6\sqrt{19} =\sqrt{36}\sqrt{19}$