by deduction, 5 and 7 are prime numbers and 15 is not a multiple of 70, therefore the answer must be 10 as it is a non-prime number and is a factor of 70 (I.e. 10 and 7)

5 0

3 years ago

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Find f(−1) given that f(x)=x3+2x2+3x+4. <br>A. 10 <br>B. -2 <br>C. 2 <br>D. -10

Finger [1]

Answer:

The answer is option C

Step-by-step explanation:

f(x) = x³ + 2x² + 3x + 4

To find f(-1) substitute the value of x that's

- 1 into f(x)

That's

We have the final answer as

Hope this helps you

8 0

3 years ago

Which expression can be simplified to find the slope of the trend line in the scatterplot?

Nutka1998 [239]

Answer: $\frac{35-21}{8-4}$

Step-by-step explanation:

The slope of a line equals to the difference between points' y-coordinates divided by the difference between their x-coordinates.

That is, if $(x_1,y_1)$ and $(x_2,y_2)$ are the point of a line,

Then the slope of the line is,

$m=\frac{y_2-y_1}{x_2-x_1}$

By the given diagram,

$x_1=4$ , $y_1=21$ , $x_2=8$ and $y_2=35$

Thus, the slope of the given line

= $\frac{35-21}{8-4}$

⇒ Fourth option is correct.

3 0

3 years ago

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