Please someone help! Will give BRAINLY to correct answer

When summarizing a source, which of the following steps should be done first? Which would be done last?

AfilCa [17]

Answer: I just finished the quiz, and the correct answer is Translate should be done first, and Synthesize should be done last

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Every positive real number has a positive and a negative square root, the ________ root is called the principal root. *

fomenos

9514 1404 393

Answer:

B) positive

Step-by-step explanation:

For even-index roots, which may be either positive or negative, the positive root is called the principal root.

5 0

3 years ago

What is the probability that all the roots of x2 + bx + c = 0 are real? [0,1]?

notsponge [240]

$x^2+bx+c$ will have real roots when the discriminant of the quadratic, $\Delta=b^2-4c$ , is non-negative, i.e.

$b^2-4c\ge0\implies b^2\ge4c$

Your question about probability is currently impossible to answer without knowing exactly what the experiment is. Are you picking $b,c$ at random from some interval? Is the choice of either distributed a certain way?

I'll assume the inclusion of "[0,1]" in your question is a suggestion that both $b,c$ are chosen indepently of one another from [0, 1]. Let $B,C$ denote the random variables that take on the values of $b,c$ , respectively. I'll assume $B,C$ are identical and follow the standard uniform distribution, i.e. they each have the same PDF and CDF as below:

$f_X(x)=\begin{cases}1&\text{for }0$

$F_X(x)=\begin{cases}0&\text{for }x$

where $X$ is either of $B,C$ .

Then the question is to find $P(B^2\ge4C)$ . We have

$P(B^2\ge4C)=P\left(C\le\dfrac{B^2}4\right)$

and we can condition the random variable $C$ on the event of $B=b$ by supposing

$P\left(C\le\dfrac{B^2}4\right)=P\left(\left(C\le\dfrac{B^2}4\right)\land(B=b)\right)=P\left(C\le\dfrac{B^2}4\mid B=b\right)\cdot P(B=b)$

then integrate over all possible values of $b$ .

$=\displaystyle\int_{-\infty}^\infty P\left(C\le\dfrac{b^2}4\right)f_B(b)\,\mathrm db$

$=\displaystyle\int_{-\infty}^\infty F_C\left(\dfrac{b^2}4\right)f_B(b)\,\mathrm db$

$=\displaystyle\int_0^1\dfrac{b^2}4\,\mathrm db=\frac1{12}$

4 0

3 years ago

Enter numbers to evaluate ‐13−23.

Nana76 [90]

Answer:

- 13 - 23 = - 13 + (-23)

= -36

- 13 - (- 23) = - 13 + 23

= 10

Step-by-step explanation:

In any order of operation (i.e. addition, subtraction, multiplication, devision) the following rules apply for two values for instance a and b where a > b :

→ If +a and +b then the final sign will be + (positive)

→ If +a and -b then the final sign will be + (positive) since a>b

→ If -a and +b then the final sign will be - (negative) since a>b

→ If -a and -b then the final sign will be - (negative)

In the given question we have two cases.

Case 1:

- 13 - 23 = - 13 + (-23) → since it is given that we add a negative value of -23, therefore it keeps its sign (so this would be a negative addition i.e. adding two negative values)

Thus we have:

- 13 - 23 = - 13 + (-23)

= -36

Case 2:

- 13 - (- 23) = - 13 + 23 → since we stated earlier that - and - gives positive sign (i.e. we subtract two negative values)

Thus we have:

- 13 - (- 23) = - 13 + 23

= 10

So we can see that:

Adding two Negative values gives a Negative value (Case 1)

Subtracting two Negative values gives a Positive value (Case 2)

6 0

3 years ago

T is the midpoint of RS, RT = x-1, and RS = 3x - 17 What is the length of RT? Enter your answer in the box

Yakvenalex [24]

Answer: 14

Step-by-step explanation:

RT= x- 1 = 15 - 1 = 14

6 0

3 years ago