Answer:
y = (8/5)x + 15
Step-by-step explanation:
<em>First change the equation to standard form (y=mx+b)</em>
5x + 8y = 16
8y = 16 - 5x
y = - (5/8)x + (16/8)
y = - (5/8)x + 2
<em>Perpendicular Lines have the inverse opposite sign of slope</em>
<em>[For example: inverse opposite sign of 2 is - (1/2)]</em>
Original equation slope (m) : - (5/8)
2nd Equation (m) : 8/5
<em>After finding the slope, plug in the slope and points the standard form equation (y=mx+b)</em>
Point: (-5,7) x : -5 y : 7
Slope (m) : 8/5
y = m x + b
7 = (8/5) (-5) + b
<em>'b' is the y-intercept and the last thing to solve for the equation</em>
7 = - 8 + b
15 = b
<em>Now, put the slope (m) and y-intercept (b) back into the equation</em>
y = (8/5)x + 15
Answer:
135
Step-by-step explanation:
A=1/2(b•h) so,
18x15=270
270/2 =135
X^2 - 8x +4 =0 is the solution for that problem
let x and y be the two numbers respectively.
since there diff is 20 so
x-y=20....(1)
then they are in ratio 3:7 so
x/y=3/7
or x=3y/7....(2)
now putting the value of x in eqn (1) we get
3y/7-y=20
or 3y-7y=20×7
or -4y=140
or y=140/-4
y=-35
now keeping the value of y in eqn (2) we get
x=3×(-35)÷7
x=-15
therefore,the numbers are x=-15 and y=-35.
Answer:
Pick any fraction that is already in its simplest form, for example:
and do this;
times the denominator and numerator with any number, but must be the same! and do it 15 times, like so;
and u will get this: