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DaniilM [7]
3 years ago
7

A number is chosen at random from the first 20 integers. Find the probability that the number is a multiple of 3.

Mathematics
1 answer:
Fofino [41]3 years ago
4 0

Answer:

3/10

Step-by-step explanation:

Multiples of 3: 3,6,9,12,15,18

There are 6 in the numbers 1-20

P(multiple of 3) = number of "multiples of 3" / total

                         = 6/20

                         =3/10

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Fill in the blanks to make the equation true. (x−9)(x+2)=x^2________ −18
Andrews [41]

Answer:

x² - 7x - 18

Step-by-step explanation:

Remember to follow FOIL.

First, multiply the first. (x)(x) = x²

Next, multiply the second. (x)(2) = 2x

Then, multiply the third. (-9)(x) = -9x

Finally, multiply the last. (-9)(2) = -18

Combine like terms: x² + 2x - 9x - 18

x² - 7x - 18

x² - 7x - 18 is your answer.

~

8 0
3 years ago
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I NEED THIS ANSWER NOW! Determine which postulate or theorem can be used to prove that ABC DCB.
Archy [21]
Quick Answer SSS
Proof
AC = DB
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8 0
2 years ago
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If h(x) = x – 7 and g(x) = x2, which expression is equivalent (g o h)(5)
Zanzabum
(goh)(x) = (g(x))(h(x)) = (x^2)(x-7) = x^3 -7x^2
then (goh)(5) = (5^3)-7(5)^2 = 124-7(25) = 124-175 = -51
8 0
3 years ago
I really need help would please like help thanks
ASHA 777 [7]
Hey there!

A reciprocal might be an unfamiliar vocab word, but the concept is really quite simple.

It's just a flipped fraction! Multiplying the flipped fraction by it's reciprocal gets you one, and that's how you check your answer.

So we have:

Reciprocal of 9/10 is 10/9, because 9/10 times 10/9 = 90/90 = 1

Reciprocal of 1/11 is 11/1, because 1/11 times 11/1 = 11/11 = 1

Reciprocal of 10(remember, it's 10/1) is 1/10, because 10/1 times 1/10 = 10/10 = 1

Hope this helps!
4 0
2 years ago
If 6, 18 and 24 are in proportion, which one is the third proportional number ? ​
Goshia [24]

Answer:

24

Step-by-step explanation:

4 0
2 years ago
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