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statuscvo [17]
3 years ago
5

What is t²=81. thanks!!

Mathematics
1 answer:
seraphim [82]3 years ago
6 0

Answer:

t= 9, t= -9

Step-by-step explanation:

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pleeeeeeeeeeeease hellllllllp meeeeeee the circle has a center of 0.its raduis is 3 cm,and the central angle A measures 100.what
Vsevolod [243]

Answer:

2.5 pi

Step-by-step explanation:

Comment

If you were trying to get the area of a whole circle, you would use

Area = pi r^2

You have to modify the formula to show that just part of the circle has an area that you are interested in.

The new formula is

Area = (theta/360) pi r^2

Givens

r = 30 cm

theta = 100

Solution

Area = (100 / 360) * pi * r^2       Substitute the givens into this formula

Area = (5 / 18) * pi * 3^2              Expand

Area = (5 / 18) * pi * 9                  Cancel 9 into 18

Area = 5/2 * pi

Area = 2.5 * pi

7 0
2 years ago
Someone help me with these two. I'll give you brainliest and 25 points!! MATHEMATICIANS OUT THERE HELP
mixer [17]
Hello LovingAngel!

To find the slope, you can use the formulas \frac{rise}{run} as well as \frac{y^2-y^1}{x^2 - x^1}. I am using the latter to calculate and ensuring my answer with the former. 

[Note: (x,y) is the format for ordered pairs]

First pair:  value 1:(1,5) and value 2:(2,8) 
\frac{y^2-y^1}{x^2 - x^1} -> \frac{8 - 5}{2 - 1} -> \frac{3}{1} or 3. 

The slope for (1,5) and (2,8) is 3(/1). 

Second pair: value 1: (3,1) value 2 (3,-1)

\frac{y^2-y^1}{x^2 - x^1} -> \frac{-1 - 1}{3 - 3} -> \frac{-2}{0}
Slope for the second pair is -2/0

Checking work with \frac{rise}{run}
1. Slope: 3/1, meaning rise (y) +3 and run (x) +1.  (1,5) -> (1+1,5 + 3) -> (2,8) ✔
2. Slope: -2/0, meaning rise (y) -2/drop (y) 2 and run 0. (3,1) -> (3 + 0, 1 + -2) -> (3,-1) <span>✔</span>

6 0
3 years ago
Which inequality is true for x=5
Andreyy89

Answer:

The answer is A) 2x+ 5 > 13

Step-by-step explanation:

4 0
2 years ago
Is 0.70 equal to 7/10
Minchanka [31]

yes the fraction of .70 is 7/10

4 0
2 years ago
Read 2 more answers
You have 8 songs, 10 podcasts, and 12 audio books on your iCloud. How many ways can you choose 1 of each to download to your iPh
Fofino [41]

Answer:

960 ways

Step-by-step explanation:

Multiplication Principle:  if there are  n  ways to do one thing and  m  ways to do another, then there are  m x n ways to do both.

That can expand to include three things (or more).

8 x 10 x 12 = 960

4 0
2 years ago
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