Answer:
1: equivalent
2: equivalent
3: not equivalent
Step-by-step explanation:
for 1 & 2, you just switch the terms, but for 3, the 6z is not negative in the first expression, but it is in the second.
(5x+1)² = 7; expand: 25x² + 10x +1 = 7 or 25x² + 10x -6 = 0
Solve this quadratic for x:
x = [-b + √(b² - 4ac)]/2a and x = [-b - √(b² - 4ac)]/2a
Plug the values and you'll find :
x = (- √7 - 1)/5 (answer C)
x = (+√7 -1)/5 (answer E)
This equation can be written as
(v-8)(v+5)/ (v-8)(v-3)
= v+5/v-3
Answer:
42°
Step-by-step explanation:
Sum of all the angles inside of any triangle is always 180°.
Therefore:
180 = y + 90 + 48
y = 180 - 90 - 48
y = 42°
Answer:
Step-by-step explanation:
3.50*2= 7 dollars $2.00 *4.125=8.25 8.25+7=15.25
