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Hitman42 [59]
3 years ago
11

Math problems help me with them giving 40 points and brainly!

Mathematics
2 answers:
Goshia [24]3 years ago
5 0

Answer:

it's 44.25%

Step-by-step explanation:

Plz mark as brainliest and follow me plz

marissa [1.9K]3 years ago
3 0

Answer:

Step-by-step explanation:

its additive identity

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a circle has a circumstance of 20. it has an arc on length 4. what is the central angle of the arc in degrees?
erastovalidia [21]

Answer:

∠72°.

Step-by-step explanation:

If a circle has a circumference of 20 and an arc with a length of 4, we can simply set up a ratio to determine the angle of the arc in degrees:

\frac{4}{20} = \frac{x}{360}

Cross multiply:

1440 = 20x\\

Divide both sides by '20':

x = 72°.

Therefore, the measure of the central angle of the arc is ∠72°.

4 0
3 years ago
I dont know what it is and its for <br> ten pointsss
labwork [276]

Answer:

1

Step-by-step explanation:

anything with a power of 0 is 1

7 0
2 years ago
Read 2 more answers
How many solutions are there for the system x^2+4y^2=100 and 4y-x^2=-20
never [62]
There are 5 solutions for this system.

x^2 + 4y^2 = 100  ____1
4y - x^2 = -20  ____2
Add both 1 & 2 together. x^2 gets cancelled
4y^2 + 4y = 80   (send 80 to the other side and divide by 4)
Then equation the becomes : y^2 + y -20 =0
Now factorise the equation: (y+5) (y-4) = 0
Solve for y :  y = -5 and y = 4
Using the values of y to find the values of x. From equation 1:
x^2 = 100 - 4y^2    x = /100 - 4y^2  (/ means square root) Replace values of y
y = -5, x = /100 - 4(-5)^2 = /100 - 100 = 0
y = 4, x = /100 - 4(4)^2 = / 100 - 64 = /36 = -6 or 6
Thus we have 6 solutions y = -5, 4 and x = -6, 0, 6
6 0
3 years ago
Find the quotient of and express it in the simplest form
nirvana33 [79]

Answer:

No answer can be found

Step-by-step explanation:

There isn't any value to find and express in simplest form lol.

5 0
3 years ago
Which expression is equivalent to 4(x+2)?
Alex73 [517]
Hello!

You can expand the 4

4x + 8

the answer is 4x + 8

Hope this helps!
5 0
3 years ago
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