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crimeas [40]
3 years ago
9

If a =3 and b= -1, what is the value of ab-b to the second power?

Mathematics
1 answer:
Scilla [17]3 years ago
5 0

Answer:    -16

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A play has tickets available for 8 orchestra seats and 12 balcony seats. The next person to buy a ticket will be randomly assign
qaws [65]

The probability that the next person will be assigned an orchestra seats is 2/5.

<h3>What is Probability?</h3>

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.

Here, Available Orchestra seats = 8

            Balcony seats = 12

      Total available seats = 12 + 8 = 20

  Probability = Favorable Outcome / Total Outcome

  Probability of getting orchestra ticket = 8/20

                                                                 = 2/5

Thus, the probability that the next person will be assigned an orchestra seats is 2/5.

Learn more about Probability from:

brainly.com/question/14210034

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5 0
2 years ago
Simplify 5x * 1/x^-7 * x^-2<br><br> a) 5x<br> b) 5x^−6<br> c) 5<br> d) 5x^6
Delicious77 [7]

Answer:

The answer is B. 5x^-6 because you have to subtract

4 0
3 years ago
Read 2 more answers
HELP ME PLZZ, ASAP!!<br><br> In your own words explain what a Cross Section is.
wariber [46]

Answer:

A cross section is a surface or shape that is exposed by making a straight cut through something especially at right angles to an axis.

4 0
3 years ago
Please help me with these problems; geometry is really getting on my nerves. T-T
ivolga24 [154]
For #19 part A :

By vertical angles and then same side interior angles 3x + 2x = 180
5x = 180
x = 36

For #19 part B:

You are correct with the 35, but you missed the fact that the 105 angle is supplementary with the unknown angle inside the triangle. So:

180 - 105 = 75

Then:

180 = 35 + 75 + x
180 = 110 + x
x = 70

Last question:

Do you know what the symbol means? Text me and tell me and I can answer it for you. :)
7 0
3 years ago
Read 2 more answers
When looking at a decimal number (ex. 6.349821477...) what are some of the characteristics that will help you identify if the nu
quester [9]

Answer:

To determine whether a decimal is rational or not, you need to know that...

Irrational numbers don't end and have no pattern whereas rational numbers are the complete opposite. Rational numbers end and have a repeating pattern.

Step-by-step explanation:

Here are examples of irrational numbers:

0.9384903204..... , π , √2

Examples of rational numbers:

0.777777... (is rational because it has a repeating pattern of 7) , √49

Hope this helps :)

5 0
2 years ago
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