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Zolol [24]
2 years ago
11

Giving 30 points pls answer correctly

Mathematics
1 answer:
Mademuasel [1]2 years ago
5 0

Answer:

B. 20.41

Step-by-step explanation:

I hope this helps! pls brainliest:D

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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
Kitty [74]

Answer:   (-2, 5) and (2, -3)

<u>Step-by-step explanation:</u>

Graph the line y = -2x + 1 (which is in y = mx + b format) by plotting the y-intercept (b = 1) on the y-axis and then using the slope (m = -2) to plot the second point by going down 2 and right 1 unit from the first point:

        y - intercept = (0, 1)            2nd point = ( -1, 1).

Graph the parabola y = x² - 2x - 3 by first plotting the vertex and then plotting the y-intercept (or some other point):

y = x^2-2x-3\quad \rightarrow \quad a=1,\ b=-2,\ c=-3\\\\\text{axis of symmetry:}\ x = \dfrac{-b}{2a}\ \longrightarrow \ x=\dfrac{-(-2)}{2(1)}=\dfrac{2}{2}=1\\\\\text{y-value of vertex:}\ f(1) = (1)^2-2(1)-3\quad \longrightarrow \quad y = 1 - 2 - 3=-4\\\\\text{y-intercept:}\ f(0)= (0)^2-2(0)-3\ \longrightarrow \ y=0 - 0 - 3 = -3 \\

         vertex = (1, -4)                2nd point (y-intercept) = (0, -3)


<em>see attached</em> - the graphs intersect at two points:  (-2, 5) and (2, -3)


8 0
3 years ago
what is the mean of this data set? 12, 17, 16, 10, 20, 13, 14, 14, 12, 12, 19, 18. answers: 13.50, 14.00, 14.75, and 15.75​
murzikaleks [220]

Answer:

14.75

Step-by-step explanation:

Add them all up, divide by 12

8 0
3 years ago
Ram, Shyam and Mohan purchased biscuits of different brands P, Q and R.
Alexxandr [17]

Answer:

Ram needs to pay $93

Shyam needs to pay $116

Mohan needs to pay $99

5 0
2 years ago
HOW MUCH MORE WILL YHE INVESTMENT BE?
dalvyx [7]

Answer:

more then america is in dept

5 0
2 years ago
What is the elasped time for 9:30p.m to8:30a.m?
solniwko [45]
12:00-9:30 = 2:30
12:30+8:30 = 8:30
2:30 + 8:30 = 11:00
11 total hours elapsed
3 0
3 years ago
Read 2 more answers
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