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sergij07 [2.7K]
3 years ago
5

Find the point slope equation for (-2,-20) and (9,79)

Mathematics
1 answer:
dem82 [27]3 years ago
3 0
Start by identifying your x1, x2, y1, and y2 values
x1: -2
x2: 9
y1: -20
y2: 79

The general form for writing a point slope equation is y-y1 = m(x-x1)
M is your slope.
To find the slope, plug the values you just identified into the equation y2-y1/x2-x1
This leaves you with 79+20/9+2
Which equals 9, so your slope (m) equals nine.
you can now plug everything into the general form which gives you:
y+20 = 9(x+2)
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Need helpppp pleaseee.
VikaD [51]
As relative coordinates are asked so
8,-6 are the answer and each line is value of 2
7 0
3 years ago
I need help fast thx
sammy [17]
Vi = 56
Vf = 56 + 7(3) = 56 + 21 = 77

THe average is (Vf + Vi)/2

(77 + 56)/2 = 133/2 = 66.5 m/s
8 0
3 years ago
Given an equilateral triangle that has an area of 1959 cm2. What is the length of its sides?
Nina [5.8K]
Equilateral
equi means equal
lateral means sides

all sides are equal
triangle has 3 sides

perimiter=side1+side2+side3
side1=side2=side3


area=1/2 times base times height
base=side
draw a line down the middle of te tiangle so you get 2 right triangles side by side
1/2base is one leg
base is hypotonuse
height is unknown
equilateral means that it is a 30-60-90 triangle with  hypotonuse equal to 2x, height=x√3, bottom is x
1/2 times base times height=1959
1/2 times x times x√3=1959
multiply both sides by 2
(x^2)√3=3918
divide both sides by √3
x^2=3918/√3
square root both sides
x=47.5611
side=hypotonuse=2x
2x=2*47.5611
side=95.12222


legnth of each side is 2\sqrt{ \frac{3918}{ \sqrt{3} } }cm or about 95.12222 cm
7 0
3 years ago
WILL MARK BRAINLYEST<br> ❤️❤️❤️❤️❤️❤️
Valentin [98]

Answer:

$108.19

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 3.6%/100 = 0.036 per year.

Solving our equation:

P = 119.88 / ( 1 + (0.036 × 3)) = 108.19494584838

P = $108.19

The principal investment required to get a total amount, principal plus interest, of $119.88 from simple interest at a rate of 3.6% per year for 3 years is $108.19.

Hope this helps!

6 0
3 years ago
5y-6=3y-20 how do i solve this problem
rusak2 [61]
Minus 3y both sides
2y-6=-20
add 6 to both sids
2y=-14
divide 2
y=-7
7 0
3 years ago
Read 2 more answers
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