Answer:
B
Step-by-step explanation:
Parallel lines have equal slopes, thus
slope of red line = slope of green line = 5 → B
Answer:
Answer: An equations is a number, a variable, or a combination of numbers and variables and operational symbols. An equation is made up of two expressions connected by an equal sign.
Example Expression: 8x+5y-3x-5
Example Equation: 5x-4=x
Step-by-step explanation:
Answer:
-23
Step-by-step explanation:
The discriminant is the number inside of the radical of the quadratic formula.
Answer:
f(t)= 17- 50t/21
Step-by-step explanation:
distance covered after t hours= 50t miles
number of gal.=50t×1/21 =50t/21 gal.
f(t)=starting-consuming= remaining
= 17-50t/21
I assume that you mean a^2 + 2a - 3 = 0
You need to find two numbers that multiply together to give the number 3 and when added give the answer 2 (as in 2a). In this case the numbers are 3 and 1 (3 x 1 = 3 and 3 - 1 = 2)
Therefore we have
(a + 3)(a - 1) = 0
The values of x which solve the equation are -3 and 1
The reason is that -3 + 3 = 0 and 1 - 1 = 0 : zero times any number is zero
