3 years ago

Evaluate -2x2 y, if x = -3 and y = -1

Mathematics

1 answer:

Gre4nikov [31]3 years ago

6 0

The answer is -12
these are the steps on how to find that
-2x2y
-2(-3)2(y)
6 times -2
-12

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Y=-5x – 26<br> 15y=3x – 18

harina [27]

Answer:

Y = − 5 x − 26

y = x /5 − 6 /5

Step-by-step explanation:

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4 years ago

Due tomarrow please help!!!!!!!!!!!!!!!!!!!!!!!!! Identify the independent and dependent variables in the following statement.

BlackZzzverrR [31]

The independent variable is the variable that is being changed. In this statement, it would be water flowing flowing in the pool. The dependent variable is what is being changed so that would be the depth of the water.

There, I hope this helps! :)

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3 years ago

Cherry is paid $72.00 for working six hours in a library. If the amount paid is proportional to the number of hours worked, what

patriot [66]

Answer:

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Step-by-step explanation:

She's being paid six hours per hour

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3 years ago

A dentist polls his patients and finds that 83 percent brush their teeth at least twice a day, 47 percent floss daily, and 19 pe

puteri [66]

Answer:

The correct option is B. 23%

Step-by-step explanation:

Let the event that patient brushes his teeth at least twice a day is denoted by A

So, P(A) = 0.83

Let the event that patient flosses daily is denoted by B

So, P(B) = 0.47

Now, it is given that 19 percent patients brush at least twice a day and floss daily.

⇒ P(A and B) = 0.19

Now, we need to find conditional probability of occurring event B given A has occurred.

$\implies P(B|A) =\frac{P(A\: and\: B)}{P(A)}\\\\\implies P(B|A) = \frac{0.19}{0.83}\\\\\implies P(B|A) = 0.2289\approx 0.23$

Hence, Nearest required percentage = 23%

Therefore, The correct option is B. 23%

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3 years ago

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4x – 7y + 3z - 10<br><br> What's the coefficient of the 2nd term?

Illusion [34]

That would be 7 because it is placed in front of the y

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3 years ago