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Crazy boy [7]
2 years ago
13

Someone please answer this, I would really be appreciative.

Mathematics
1 answer:
Iteru [2.4K]2 years ago
3 0

Answer:

y-30 = 3(x-1)

Step-by-step explanation:

Point-slope form of an equation is

y-y1 = m(x-x1)  where (x1,y1 ) is a point and m is the slope

We know on day 1 they exercised 30 minutes (1,30) where x is the number of days and y is the minutes.  The rate increased 3 minutes each day so m = 3

y-30 = 3(x-1)

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2 years ago
Find all solutions of the equation. 5 sin x − 82√ = 3 sin x − 72√
Andrei [34K]

Answer:

  • x = arcsin(√20.5 -3√2) +2kπ . . . k any integer
  • x = π - arcsin(√20.5 -3√2) +2kπ . . . k any integer

Step-by-step explanation:

Add √(82) -3sin(x) to both sides to get ...

  2sin(x) = √82 -√72

Now, divide by 2 and find the arcsine:

  sin(x) = (√82 -√72)/2

  x = arcsin((√82 -√72)/2)

Of course, the supplement of this angle is also a solution, along with all the aliases of these angles.

___

In degrees, the solutions are approximately 16.562° and 163.438° and integer multiples of 360° added to these.

6 0
3 years ago
Erica’s family is moving away from California. They decided to have a moving sale and sell each item for 70% off the price they
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Find the sale price by multiplying the original price by 70% then add the two prices together to get the total.

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549 x 0.70 = 384.30

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2 years ago
How can you find the area of a polygon that is not one for which you know an area formula
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