Step-by-step explanation:
−2(4y+1)=−8y−2
4y+1=4y+1
infinite solutions
2. 2n-5=7
+5+5 no makes it 2n=12 do 12/2 and you get 6 and thats your answer hope i helped
1.) Parallel to 10x - 5y = 8 ; (2,4)
10x - 5y = 8
5y = 10x - 8
y = 2x - 8/5
m = 2
y - 4 = 2(x - 2)
y - 4 = 2x - 4
y = 2x
2.) Parallel to 4x + 2y = 5 ; (-3,5)
4x + 2y = 5
2y = -4x + 5
y = -2x - 5/2
m = -2
y - 5 = -2(x + 3)
y - 5 = -2x - 6
<span>y = -2x -1
</span>
3.) Parallel to 4x + y = -1 ; (5,0)
4x + y = -1
y = -4x - 1
m = -4
y - 0 = -4(x - 5)
y = -4x + 20
4.) Perpendicular to x - 5y = -10 ; (2,5)
x - 5y = -10
5y = x + 10
y = x/5 - 2
m = -5
y - 5 = -5(x - 2)
y - 5 = -5x + 10
y = -5x + 15
5.) Perpendicular to x - 3y = 9 ; (3,5)
x - 3y = 9
3y = x - 9
y = x/3 - 3
m = -3
y - 5 = -3(x - 3)
y - 5 = -3x + 9
<span>y = -3x + 14</span>
Answer:
1.2
2.4√3÷3
3. x=45, y=15
Step-by-step explanation:
OK,
1. So the first part requires the Pythagoreanism formula which is: b²=a²+c²:
AC²=AB²+BC²====> AC²=(1)²+(√3)²===> AC²=4===> AC=2
2.The second part requires the formula of tan:
tan A=BC÷AB===> tan A=√3÷1===> tan A=√3
tan C=AB÷BC===> tan C=1÷√3===> tan C=√3/3
tan A+tan C=√3+√3/3===> 4√3÷3
3.And the last part requires the equation of angles:
A+B+C=180===>
x+y+x-y+90=180===> 2x=90===> x=45, y=15
What do you want us to answer? there is no pic posted so we can't help u
