Answer
9 gallons is the total amount of gas that Erin used
Step-by-step explanation:
If you multiply 24 and 3 and then divide your answer will be 9
How to set up you problem.
C is the answer c is the answer
Answer:
-3
Step-by-step explanation:
x + (x+1) +(x+2)+(x+3)+(x+4)+(x+5)+(x+6) = 0
7x + 21 = 0
x = -3
Answer:
Option D
Step-by-step explanation:
The questions which involve calculating the angles and the sides of a triangle either require the sine rule or the cosine rule. In this question, the two sides that are given are adjacent to each other the given angle is the included angle. This means that the angle B is formed by the intersection of the lines a and c. Therefore, cosine rule will be used to calculate the length of b. The cosine rule is:
b^2 = a^2 + c^2 - 2*a*c*cos(B).
The question specifies that c=71, B=123°, and a=65. Plugging in the values:
b^2 = 65^2 + 71^2 - 2(65)(71)*cos(123°).
Simplifying gives:
b^2 = 14293.0182932.
Taking square root on the both sides gives b = 119.6 (rounded to the one decimal place).
This means that the Option D is the correct choice!!!