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r-ruslan [8.4K]
3 years ago
8

I need help getting the solution to 2cos^2 112.5°-1

Mathematics
1 answer:
Levart [38]3 years ago
4 0
This website has helped me in math https:// mathway .com 

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Yo i need help please no links i just need the correct answer to pass this
Black_prince [1.1K]
3.2 i believe!!! sorry if i’m late
6 0
3 years ago
I need help with these two!! thanks!!!
aniked [119]

Answer:

11: Diameter

13: 10 cm

Step-by-step explanation:

Diameter is a straight line across a circle.

It would be 10 because if you cut 20 in half, which is the whole distance of the line, you would get 10.

5 0
3 years ago
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Rewrite the quadratic function in intercept or factored form<br><br> Y=9+12x+4x^2
Novosadov [1.4K]

Answer: y=(2x+3)^{2}


Step-by-step explanation:

1. Rewrite the quadratic function:

y=(2x)^{2}+12x+(3)^{2}

2. By the perfect trinomial square:

a^{2}+2ab+b^{2}=(a+b)^{2}

3. You have that 2ab=2*3*2x=12x

 4. Therefore, you can write the function in the following intercept form:

y=(2x+3)^{2}



5 0
4 years ago
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rjkz [21]
The answer should be .4 X cubed +1300 X squared -300+50
7 0
3 years ago
What is the distance between ( 8 , − 3 ) (8,−3)left parenthesis, 8, comma, minus, 3, right parenthesis and ( 4 , − 7 ) (4,−7)lef
Elena L [17]

Given Information:

Point 1 =  (8, −3)

Point 2 =  (4, −7)

Required Information:

Distance between points = d = ?

Answer:

Distance between points = d = √32 = 5.657

Step-by-step explanation:

We are given two points,

(x₁, y₁) = (8, −3)

(x₂, y₂) = (4, −7)

We are asked to find the distance between these two points.

The distance is given by

d = \sqrt{(x_2 - x_1)^2 +(y_2 - y_1)^2 }

Substitute the given coordinates into above equation

d = \sqrt{(x_2 - x_1)^2 +(y_2 - y_1)^2 } \\\\d = \sqrt{(4 - 8)^2 +(-7 - (-3))^2 } \\\\d = \sqrt{(-4)^2 +(-7 +3)^2 } \\\\d = \sqrt{(-4)^2 +(-4)^2 } \\\\d = \sqrt{16 +16 } \\\\d = \sqrt{32} \\\\d = 5.657

Therefore, the distance between (8, −3) and (4, −7) is 5.657 units.

7 0
3 years ago
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