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3 years ago

TUESDAY: Which of the following statements are true about quadratics? *

Mathematics

1 answer:

babymother [125]3 years ago

3 0

Answer:

All of the Above are true.

Step-by-step explanation:

All of the statements are true if you evaluate them properly. I don't really wanna explain each and every choice so just trust me on this one. I got 100% on the Bellwork

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What is the 72nd term in the term in the arithmetic sequence 3, 9, 15, 21,

boyakko [2]

Answer:

429

Step-by-step explanation:

y=3+6×(n-1)

n=72

y=3+6×(72-1) = 429

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2 years ago

Sandra waits tables at Polly's Tamales. While she is working, she receives a discount on any food she buys. If an item normally

Musya8 [376]

Answer: 6

Step-by-step explanation: 2/3 of 9 = 6

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3 years ago

What is the slope (5,7) and (2,-2)

Romashka [77]

Answer:

slope = 3

Step-by-step explanation:

to find the slope you do (y2-y1)/(x2-x1)=m

so we can plug the points into this formula

(5,7) (2,-2)

x1 y1 x2 y2

-2-7/2-5=m

-9/-3=m

Simplifies to

3=m

4 0

2 years ago

I’m supposed to find the slope intercept form. The x intercept is (2,0) and the y intercept is (0,6). I keep getting 6/2. But, t

Lilit [14]

$\bf \stackrel{x-intercept}{(\stackrel{x_1}{2}~,~\stackrel{y_1}{0})}\qquad \stackrel{y-intercept}{(\stackrel{x_2}{0}~,~\stackrel{y_2}{6})} \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{6-0}{0-2}\implies \cfrac{6}{-2}\implies -3 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-0=-3(x-2)\implies y=-3x+6$

5 0

2 years ago

3. From the table below, find Prof. Xin expected value of lateness. (5 points) Lateness P(Lateness) On Time 4/5 1 Hour Late 1/10

wariber [46]

Answer:

The expected value of lateness $\frac{7}{20}$ hours.

Step-by-step explanation:

The probability distribution of lateness is as follows:

Lateness P (Lateness)

On Time 4/5

1 Hour Late 1/10

2 Hours Late 1/20

3 Hours Late 1/20

The formula of expected value of a random variable is:

$E(X)=\sum x\cdot P(X=x)$

Compute the expected value of lateness as follows:

$E(X)=\sum x\cdot P(X=x)$

$=(0\times \frac{4}{5})+(1\times \frac{1}{10})+(2\times \frac{1}{20})+(3\times \frac{1}{20})\\\\=0+\frac{1}{10}+\frac{1}{10}+\frac{3}{20}\\\\=\frac{2+2+3}{20}\\\\=\frac{7}{20}$

Thus, the expected value of lateness $\frac{7}{20}$ hours.

8 0

3 years ago