How do i read a curve graph need help !!!

Mathematics

1 answer:

drek231 [11]3 years ago

7 0

Answer:

Let's use the plot to the right as an example for reading data from a graph. This plot shows travel times as related to distance for P-waves (red curve) and S-waves (blue curve) from the epicenter of an earthquake. P- and S-waves are two types of waves that are generated by earthquakes; P-waves travel faster than S-waves. I hope this helps.

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Fit a quadratic function to these three points:<br> (-2,8), (0, -4), and (4, 68)<br> Respuesta

zloy xaker [14]

Answer:

f(x) = 4x^2 + 2x - 4.

Step-by-step explanation:

Let the quadratic function be y = f(x) = ax^2 + bx + c.

For the point (-2, 8) ( x = -2 when y = 8) we have:

a(-2)^2 + (-2)b + c = 8

4a - 2b + c = 8 For (0, -4) we have:

0 + 0 + c = -4 so c = -4. For (4, 68) we have:

16a + 4b + c = 68

So we have 2 systems of equations in a and b ( plugging in c = -4):

4a - 2b - 4 = 8

16a + 4b - 4 = 68

4a - 2b = 12

16a + 4b = 72 Multiplying 4a - 2b = 12 by 2 we get:

8a - 4b = 24

Adding the last 2 equations:

24a = 96

a = 4

Now plugging a = 4 and c = -4 in the first equation:

4(4) - 2b - 4 = 8

-2b = 8 - 16 + 4 = -4

b = 2.

3 0

3 years ago

Can someone do this for me or help me

Elden [556K]

JM=12
JL= 14
MN=?
MK=?

VT= 11
UV= 9
RS=?
ST=?

GF=23
HF=20
GH=?
GE=?

M<1=?
M<2=?
M<3=?
M<4=?
M<5=?
M<6=?
M<7=?
M<8 = 90 degrees

WXZ = 34 degrees
WVZ=90 degrees
ZYW= 56 degrees

These are the only answers I knew, I’m sorry I couldn’t find the rest. If I do find more answers, I’ll comment them.

5 0

3 years ago

HELPP MEE ANSEERRR PLSSSS

koban [17]

Answer:

18b+12

Step-by-step explanation:

6x3=18,6x2=12 so it's 18b(keep the variable)+12

3 0

2 years ago

Read 2 more answers

W = 3x + 7y solve for y