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jonny [76]
3 years ago
14

I need help on this plzzz I and not the best at math ​

Mathematics
1 answer:
vampirchik [111]3 years ago
8 0

Answer:

See attachment for graph

<em></em>

Step-by-step explanation:

Given

f(x) = \left[\begin{array}{cc}-1&x1\end{array}\right

Required

The graph of the step function

Before plotting the graph, it should be noted that:

\le and \ge use closed circle at its end

and > use open circle at its end

So, we have:

f(x) = -1,\ \ \ \ x < -1

The line stops at -1 with an open circle      

f(x) = 0,\ \ \ \ -1 \le x \le 1

The line starts at - 1 and stops at -1 with a closed circle at both ends

f(x) = 1,\ \ \ \ x > 1

The line starts at 1 with an open circle

The options are not complete, so I will plot the graph myself.

<em>See attachment for graph</em>

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I am a 2-digit number. If you divide me by 5 then multiply by 2, the I? product is 20. What number am
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So we are going to make this into a equation and evaluate it: 
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3 years ago
Of all the people applying for a certain​ job, 80% are qualified and 20​% are not. The personnel manager claims that she approve
motikmotik

Answer:

69.23% probability that a person is not qualified if he or she was not approved by the manager.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes:

In this problem, we have these following probabilities:

80% probability that a person is qualified

20% probability that a person is not qualified.

90% probability that a qualified person is approved.

10% probability that a qualified person is not approved.

10% probability that an unqualified person is approved.

90% probability that an unqualified person is not approved.

Find the probability that a person is not qualified if he or she was not approved by the manager.

Desired outcomes

Unqualified and not approved.

20% are not qualified. Of those, 90% were not approved. So

0.9*0.2 = 0.18

Total outcomes:

Qualified and not approved or unqualified and not approved.

80% are qualified. Of those, 10% were not approved

20% are not qualified. Of those, 90% were not approved. So

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Probability

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✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ 8² - (4+2)² × 2 ÷ 4 = 46

Follow order of operations:

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

(Note: Multiplication and division can be done in either order as well as addition and subtraction.)

First, do parenthesis and exponents:

(4 + 2)² = 36   8² = 64

Now do multiplication and division:

36 x 2 ÷ 4 = 18

Now do subtraction:

64 - 18 = 46

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

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