Answer:
Step-by-step explanation:
Subtract 2 from both sides and factor:
Solve each factor individually:
Value of x
For an isosceles triangle two sides are equal
AB=BC
7x-3=9x-11.
11-3=9x-7x
8=2x
2x=8
x=8/2
x=4
AB =7x-3=7(4)-3=25 units
BC=9x-11=9(4)-11=25 units
AC=4x+1=4(4)+1=17 units
Answer:
Step-by-step explanation:
∠5 +∠6 +∠7 = 180 {straight line angle}
38 + 62 + ∠7 = 180
100 +∠7 = 180
∠7 = 180 - 100
∠7 = 80°
l // m
∠3 = ∠7 {Alternate interior angles are congruent}
∠3 = 80°.
0<x<1 and 0<y<1
x>0 so x is positive and y>0 so y is also positive.
When you multiply two positive numbers you always get a positive number, so the product of x and y must be positive, or greater than 0.
xy>0 - it must be true
xy<0 - it can't be true
Also when you divide a positive number by a positive number you always get a positive number, so the quotient of x and y must be positive.
x/y<0 - it can't be true
D and E can be true, but don't have to. It depends on the values of x and y. If x>y, then x-y>0 is true and x-y<0 isn't true; if x<y, then x-y>0 isn't true and x-y<0 is true.
Therefore, only A <u>must</u> be true.
