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slamgirl [31]
2 years ago
5

Help help help heeeelllpppp

Mathematics
1 answer:
ra1l [238]2 years ago
4 0
(a) is the answer!! hope this helps :))) it would also mean a lot of you have me brainlyist answer!
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Find the circumference of a circle that has a center at (3,1) and passes through the point (3,4)?
Alex Ar [27]
Graph the two points and you'll see that the radius is 3.
C=2(pi)r
C = 2(3.14)(3)
C = 18.84
7 0
3 years ago
The graph of an exponential function passes through (1, 10) and (4, 80). Find the function that describes the graph.
svetlana [45]

Answer:

  • y = 5*2ˣ

Step-by-step explanation:

<u>Exponential function:</u>

  • y = abˣ

<u>Ordered pairs given:</u>

  • (1, 10) and (4, 80)

<u>Substitute x and y values to get below system:</u>

  • 10 = ab
  • 80 = ab⁴

<u>Divide the second equation by the first one and solve for b:</u>

  • 80/10 = b³
  • b³ = 8
  • b = ∛8
  • b = 2

<u>Use the first equation and find the value of a:</u>

  • 10 = a*2
  • a = 5

<u>The function is:</u>

  • y = 5*2ˣ
4 0
2 years ago
Read 2 more answers
I have a test In math Tommorow and its a make or break situation for my grade I really need help with this question!
irina [24]
I was just in the same situation, you got this. the answer is A.
8 0
3 years ago
Read 2 more answers
in 1930 the average cost for a gallon of gasoline was $0.25. in 2007 the average cost for a gallon of gasoline is $2.60 what is
AlekseyPX
Hello! The first thing to do is to find the amount of change by subtracting both numbers. 2.60 - 0.25 is 2.35. Now, we set up a proportion by doing change/original = x/100. With the values plugged in, it would be written like this: 2.35/0.25 = x/100. Cross multiply the values in the proportion. When you do, you get 235 = 0.25x. Now, divide each side by 0.25 to isolate the "x". When you do that, x = 940. The price of gas has gone up 940% since 1930.
7 0
3 years ago
Read 2 more answers
Help me please urgent
Lilit [14]
The inscribed angle is always half of the central angle. 
So 60÷2=30
6 0
3 years ago
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