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Anton [14]
4 years ago
7

Can some one help me with this math problem and explain their self's as well?

Mathematics
1 answer:
yaroslaw [1]4 years ago
3 0

Answer:

20 side polygon: 180 x (20 -2)

Step-by-step explanation:

A n side polygon can be divided into n-2 triangles

each triangle has 180°

n-2 triangles have 180 x (n-2) degrees

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Graph the equation. y = 2 sqrt. x
777dan777 [17]

A graphing calculator or spreadsheet program can do this for you. Below is a plot from the Desmos on-line graphing calculator.

3 0
3 years ago
Which equation is not equivalent to the other two
Liula [17]

Answer:

y=-4-3x

Step-by-step explanation:

y = -3x - 4

y = -3x + (-4)

y = -4 + 3x

y = -4 - 3x

7 0
3 years ago
Can someone please help me???<br><br> -5x+y=35<br> 3x+2y=-21<br><br> (Use substitution method)
Elodia [21]
Answer: x= -7, y= 0
Hope this helped , if it did mark me brainliest pls!
5 0
3 years ago
Read 2 more answers
A model airplane is shot up from a platform 1 foot above the ground with an initial upward velocity of 56 feet per second. The h
scoray [572]

Answer:

Option B. 1.8 seconds

Step-by-step explanation:

h=-16t^2+56t+1

This is a quadratic equation, and its graph is a parabola

h=at^2+bt+c; a=-16, b=56, c=1

Like a=-16<0 the parabola opens downward, and it has a maximum value (height) at the vertex, at the abscissa:

t=-\frac{b}{2a}

Replacing the known values:

t=-\frac{56}{2(-16)}\\ t=-\frac{56}{(-32)}\\ t= 1.75

Approximately 1.8 seconds.

Answer: It takes approximately 1.8 seconds the airplane to reach its maximum height.


5 0
4 years ago
Read 2 more answers
PO<br> What is the slope of a line that goes through the following 2 points?<br> (-12,-5) (0, -8)
balandron [24]

Answer:

-1/4

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-8-(-5))/(0-(-12))

m=(-8+5)/(0+12)

m=-3/12

simplify

m=-1/4

Please mark me as Brainliest if you're satisfied with the answer.

3 0
3 years ago
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