3 years ago

precalc! how do you solve by completing the square? i have 2 examples! (17 & 18 please) tysm <3

Mathematics

1 answer:

Andrei [34K]3 years ago

5 0

Answer:

17) x = 11, -8

18) exact form: x = + 2 sqaure root 6/ 3 + 2

I hope this helps :)

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There are 18 people waiting for the train. Eight-ninths of them have an umbrella. How many people waiting for the train have an

Pie

Answer:

Step-by-step explanation:

Ok, so there are 18 people. If 8/9 have umbrellas, how many have umbrellas?

There is a simple solution to this.

First, lets find out how much people is 1/9

We can do this by dividing 18 by 9 to get 2

So 1/9 of the group is 2 people.

Now you can use this to find 8/9 by multiplying 2 by 8

This gives you the total of 16

Another way you could do this was take the answer from the first step and subtract that from the 18

9/9 - 1/9 = 8/9 => 18 - 2 = 16

Hope this helps! =)

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3 years ago

−x−1

miskamm [114]

Answer:

-6

Step-by-step explanation:

f(x) = -x-1

Find f(5), this means that anywhere you see x, you substitute in 5.

f(x) = -x-1

f(5) = -(5)-1

Take note of the signs.

f(5) = -6

PLease rate 5 stars, give brainliest and thank. Thanks.

5 0

3 years ago

3. Solve 3(x - 2) = 27. A. 21 B 9.67 D.7

Illusion [34]

Answer:

x = 11

Step-by-step explanation:

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3 years ago

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last week, todd started a new job. he worked 35 hours over 5 workdays of equal length. he makes $9 an hour. how much did todd ma

galben [10]

Answer:

b) $63

Step-by-step explanation:

35 hours / 5 days = 7 hours per day

7 x $9 = $63 per day

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10. If A is at (9,-2) and B is at (14, 10), what is the DISTANCE between A and B?

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Answer:

Step-by-step explanation:

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