Answer:
x=-3, y=-5 & x=1, y=3. The system have two solutions.
Step-by-step explanation:
x^2+4x-2=2x+1
x^2+4x-2x-2-1=0
x^2+2x-3=0
factor out the trinomial
(x+3)(x-1)=0
zero property
x+3=0, x-1=0
x=0-3=-3
x=0+1=1
y=2(-3)+1=-6+1=-5
y=2(1)+1=2+1=3
If angle BCD measures 70° then so does angle DBC (because you have formed an isoceles triangle inside the larger ΔABC and the two legs are equal so the two angles have to be equal. So we have a two 70° angles which leaves 40° for the 3rd angle, which is ∠BDC.
Since ∠BDC and ∠ADB are supplementary (180°) - that leaves 140° for ∠ADB and is our answer
Answer:
x=-5
Step-by-step explanation:
25 - 3x = 40
-3x + 25 =40
-3x +25--25=40-25
-3x=15
-3x÷-3=25÷-3
x=-5
Answer:
Well a base with a positive exponent would be 5^3. All this means is 5x5x5 which is 125.
Step-by-step explanation:
Hope this helps!
Answer:
The expression is 4x² and coefficient is 4.
Step-by-step explanation:
All have the same variables, x², so you add up together :
