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3 years ago

5

2. In which set of ordered pairs is y a function of x?

1 answer:

Dmitrij [34]3 years ago

3 0

Answer:

c. although set a, is a proper function, with y being the function of x, c is the answer.

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The graph of 2x – 3y = 21 crosses the y-axis at what point?

kifflom [539]

2x-21=3y divide by 3. 2/3x-7=y. So at 7 it crosses

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3 years ago

in how many ways can a mail carrier place three letters in five mailboxes if each box may receive more than one letter?

Bad White [126]

Each box may receive more than one letter.

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3 years ago

Suppose that a class contains 15 boys and 30 girls, and that 10 students are to be selected at random for a special assignment.

natka813 [3]

Prob of selected students times prob of selecting boys times prob of selecting 3 boys
total students = 15b + 30g = 45 students

1. 10s/45t = 0.22
2. 15b/45t = 0.33
3. 3b/15b = 0.2

0.22×0.33×0.2=0.0148

1.48%

I'm not sure 100%... double check answer please

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3 years ago

a shipping clerk must send packages of chemicals to a laboratory. The container she is using to ship the chemicals will hold 18

liraira [26]

Answer:

6 chemicals

Step-by-step explanation:

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3 years ago

Describe the error(s) that occurred and show the correct solution.

RideAnS [48]

Answer:

$-x^{2}+4x$

Step-by-step explanation:

we have

$(x^{2}+x)-(2x^{2} -3x)$

step 1

Eliminate the parenthesis

$x^{2}+x-2x^{2} +3x$

The symbol of the term 3x is incorrect, must be positive instead of negative

so

$-(-3x)=+3x$

Group terms that contain the same variable

$(x^{2}-2x^{2})+(x+3x)$

Combine like terms

$-x^{2}+4x$

6 0

3 years ago