1 year ago

What is the difference between adding whole numbers and adding decimals?

1 answer:

4 0

Answer:

The only difference is that we line up the numbers according to the decimal point. For addition, it doesn't matter which number goes on the bottom.

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If f(x)=x^2+3x+4 which of the number choices represents (f(x+h)-f(x))/h?

Helen [10]

In case you're not already aware, the expression $\frac{f(x+h)-f(x)}h$ is called the "difference quotient" and represents the average rate of change of a function $f$ over an interval $[x,x+h]$ .

For the function $f(x)=x^2+3x+4$ , by substituting $x+h$ we get

$f(x+h)=(x+h)^2+3(x+h)+4=(x^2+2xh+h^2)+(3x+3h)+4=x^2+3x+4+(2x+3)h+h^2$

Then the difference quotient is

$\dfrac{f(x+h)-f(x)}h=\dfrac{(x^2+3x+4+(2x+3)h+h^2)-(x^2+3x+4)}h$

$=\dfrac{(2x+3)h+h^2}h=2x+3+h$

where the last equality holds as long as $h\neq0$ .

5 0

2 years ago

Its 3:49, school is almost done, so answer one question plss

mylen [45]

Answer:

The answer is D.

Step-by-step explanation:

Well since there are 4 values calculated then 2 would be above the mean because plus the 2 values above the mean. I don't know if it makes since though.

6 0

2 years ago

If y = 12 when x = 9 find, x when y = 4

s344n2d4d5 [400]

Answer:3

Step-by-step explanation:

12/4=3, 9/3=3

hope it helps

6 0

2 years ago

Which polynomial is in standard form? A) 26x^5+12x^7-8x^3+6x

Bess [88]

It's C. In order to be in standard form you have to have all your exponents in descending order. They don't all have to be there in order, the ones that are just have to go from highest to lowest.

7 0

2 years ago

Read 2 more answers

Amanda has 2,00,234 dollars. She needs 4,00,578 dollars. Her friend Alice gives her 207,78 and then Amanda gives her 200 back. H

lutik1710 [3]

Answer:

sorry i dont know

Step-by-step explanation:

7 0

3 years ago