Evaluate the expression 7s2 if s = 4. 112 196 742 784

Mathematics

1 answer:

Olin [163]3 years ago

4 0

Answer:

112

4 to the second power is 16, multiply by 7 get 112

Step-by-step explanation:

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Is {2,4,6} and {6,4,2} equal or not equal

lisabon 2012 [21]

ummmmmmmm it's equal..

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3 years ago

Suppose that a student who is about to take a multiple choice test has only learned 40% of the material covered by the exam. Thu

Umnica [9.8K]

Answer:

There is a 52% probability that she will get it right.

Step-by-step explanation:

We have these following probabilities:

A 40% probability that the student knows the answer to a question.

A 60% probability that the student does not know the answer to a question.

If the student does not know the answer to a question, a 20% probability of getting the question right guessing.

If we choose a question at random from the exam, what is the probability that she will get it right?

40% probability that she knows the answer

60% that she has to guess, when there is a 20% probability of getting it right. So

$P = 0.4 + 0.6*0.2 = 0.52$

There is a 52% probability that she will get it right.

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3 years ago

Which of the following points lie in the solution set to the following system of inequalities?

zheka24 [161]

The best way is to check all answers. lets check answer A first.
Take the equation y > -3x +3 and substitute 2 for x and -5 for y.
(-5)> -3(2) + 3
-5 > -6 + 3
-5 > -3
we know this is not true so A is not the answer. because it is an invalid solution.
Lets check B
(-2)>-3(5) + 3
-2 > -15 +3
-2 > -12
we know this is true so it is a valid solution Now we have to check the other equation with the same point.
y> x +2
5> (-2)+2
5> 0
we know this is true so its a valid solution.
This means B the correct answer.

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3 years ago

Read 2 more answers

2x-5y=11,4x+10y=18<br> Use elimination

Anna11 [10]

Answer:

Step-by-step explanation:

Reza Nazari, ‎Ava Ross · 2019 · ‎Study Aids

18) Choice D is correct sum of terms sum of numbers average ... –2(2x + 5y = 11) , –4x – 10y = —22 4x – 2y = –14 4x – 2y = –14 = –12y = —36 = y = 3 Plug in ...

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2 years ago

Which model repersents the product 6 x <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7D" id="TexFormula1" title="\frac{3}

mylen [45]

Answer:

6 × $\frac{3}{4}$ = $\frac{9}{2}$ = 4 $\frac{1}{2}$