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My name is Ann [436]
3 years ago
7

WILL MARK U AS BRAINLIEST!!! Evaluate the following expressions given the functions below:

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
7 0

sorry that was a mistake tee hee

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Period of y=2tan (2x+90) -1
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20 is the answer
I hope this help
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What causes the normal ocean waves that continuously crash on the beach? A. Wind B. Upwelling C. The moon D. Earthquakes
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3 years ago
Read 2 more answers
Help? im confused plss!<br> Find the area of the regular polygon with the given radius or apothem
Snezhnost [94]

Answer:

  50 cm²

Step-by-step explanation:

Given that the regular polygon is a square, there are multiple ways you can jump directly to the answer. Perhaps the simplest is to use the formula for the area of a rhombus:

  A = 1/2(d1)(d2)

where d1 and d2 are the lengths of the diagonals. Here, we see that half the diagonal is 5 cm, so the area is ...

  A = (1/2)(10 cm)(10 cm) = 50 cm² . . . . area of the polygon

__

<em>Alternate solution</em>

If you want to use the radius and the number of sides in a formula, you can consider the area of each triangle formed by radii and a side. That triangle has area ...

  A = 1/2r²sin(α)

where r is the radius and α is the central angle. For an n-sided polygon, the area is the sum of n of these triangles, and the central angle is 360°/n. Then the polygon area is ...

  A = n/2·r²·sin(360°/n)

For n = 4 and r = 5 cm, the area is ...

  A = (4/2)(5 cm)²(sin(360°/4)) = 2(5 cm)²(1) = 50 cm² . . . . area of square

_____

<em>Additional comment</em>

The formula is somewhat different if you start with the length of the apothem. One way to find the area is using the above formula and the relation between the radius and apothem:

  r = a·sec(180°/n)

Another formula uses the apothem directly:

  A = n·a²·tan(180°/n)

8 0
2 years ago
Isaac has 21 green marbles and 7 blue .He wants to place them in identical groups without any marbles left over.What is the grea
dybincka [34]

Answer:

7 groups

Step-by-step explanation:

Each group would have 1 blue marble and 3 green marbles

8 0
3 years ago
The janitor at a school discovered a leak in a pipe. The janitor found that it was leaking at a rate of 3 fl oz per hour . How f
Fofino [41]

Answer:

So, it would take around 42 hours for the pipe to leak one gallon.

Step-by-step explanation:

I'm not sure if that's the answer you wanted but... yeah.

I found out how many fl oz are in a gallon then divided that by 3. There are 128 fl oz in a gallon, divided by 3 ( the amount leaked per hour) I got 42.6666.....

6 0
3 years ago
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