Answer:
x=14
Step-by-step explanation:
4x +15 =71
4x =71 - 15
4x =56
x=56 :4
x=14
4 ×14 +15 =71
56 +15 =71
71 =71
Answer:
» 4 → Coefficient of x [slope of a line]
» x → Term of 4
» ⅓ → Coefficient of y
» y → term of ⅓
-2.3 → Constant [y-intercept]
Step-by-step explanation:
Consider equation below:

• a is a coefficient of x-term
• b is a coefficient of y-term
• c is a constant
This problem can be solved by making use of the Cosine Law. In general form, it is:
b2 = a2 + c2 - 2ac cos B
The given values are:
a = 8.75 cm
c = 4.26 cm
B = 87<span>°
Plugging in the values:
b2 = 8.75^2 + 4.26^2 - 2(8.75)(4.26) cos 87
b = 9.53 cm
So, the answer is:</span>
C. 9.53 centimeters
The correct answer should be B.
However, since these only involve addition, the parentheses do not actually make a difference in the answer.