3 years ago

I need help in these questions

Mathematics

2 answers:

FrozenT [24]3 years ago

6 0

•x^2-4x+7 (for the first bullet point)

Rus_ich [418]3 years ago

4 0

Answer:

Step-by-step explanation:

The first one is x^2-4x+7

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Use the Counting Principle to find the probability. Choosing the 7 winning lottery numbers when the numbers are chosen at random

frozen [14]

Answer: 120

<u>Step-by-step explanation:</u>

Since the order of the numbers doesn't matter we can use the formula:

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AURORKA [14]

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4 years ago

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Assoli18 [71]

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Tickets for a concert cost $2 each for children and $5 each for adults.A group of 30 people consisting of children and adults pa

noname [10]

Let,
the no. of adults be "x"
then, the no. of childern = total people - total adults
= (30 - x)
Now,
According to the quesiton,
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3 years ago