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Slav-nsk [51]
4 years ago
12

I got the wrong answer, does anyone know what the right answer is?

Mathematics
1 answer:
Tom [10]4 years ago
5 0

It should be C.

The slope formula using 2 point is

m = (y2 - y1) / (x2 - x1)

That's another way of saying C. The problem with B is that it is the upside down of what the slope actually is.

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Find the solutions of each equation on the interval [0,2pi)<br><br> sin(3pi/2+ x)+sin(3pi/2 +x)= -2
user100 [1]

Answer:

x=0

Step-by-step explanation:

You can combine the equation to get 2sin(3/2 +x) = -2

divide both sides by 2 and you get the equation equal to -1. sin is equal to -1 when the value inside is 3/2 so this is the answer.

3 0
2 years ago
Q<br> (x + 40)<br> (3x – 20)<br> R<br> S<br> Find m
xz_007 [3.2K]

Answer:

30

Step-by-step explanation:

1. x + 40 = 3x - 20

2. 40 = 2x - 20

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5 0
3 years ago
A certain compound has a half-life of four days. Write and use an exponential decay function to find the amount of compound rema
dimaraw [331]

Answer:

1.97 ounces

Step-by-step explanation:

-The exponential decay function is given by the formula:

P_t=P_oe^{-rt}\\\\

Given that the half-life is 4 days, we can substitute in the formula to solve the rate of decay for a single half-life:

P_t=P_oe^{rt}\\\\P_t=0.5P_o\\\\\therefore 0.5=e^{-4r}\\\\-4r=In(0.5)\\\\r=0.17329

#Since, 1 week has 7 days, 3 weeks is a 21-day period, thus, t=21.

#We substitute and solve for the amount remaining after 21days of decay:

P_t=P_oe^{-rt}\\\\=75e^{-21\times 0.17329}\\\\=1.97072\\\\\approx1.97 \ oz

Hence, the amount remaining after 3 weeks of decays is approximately 1.97 ounces

4 0
3 years ago
Six more than twice a number is 20
4vir4ik [10]

Answer:

7

Step-by-step explanation:

7x2=14

14+6=20

5 0
3 years ago
Help with number 12 and 13 And please show work so I can understand how to do it
Len [333]
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7 0
3 years ago
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