the Answer C: 4
Step-by-step explanation:
Answer:
1. her weekly allowance is 16 dollars
Step-by-step explanation:
Answer:
x = -2, y = 3
Step-by-step explanation:
Given equations are,
4x + 5y = 7 ---------(1)
3x - 2y = -12 ----------(2)
Multiply equation (1) by 3
12x + 15y = 21 ------(3)
Multiply equation (2) by (-4)
-12x + 8y = 48 --------(4)
Now add equations (3) and (4),
(12x + 15y) + (-12x + 8y) = 21 + 48
(12x - 12x) + (15y + 8y) = 69
23y = 69
y = 3
From equation (2),
3x - 2(3) = -12
3x - 6 = -12
3x = 6 - 12
x = -2
Therefore, x = -2 and y = 3 will be the answer.
Answer: Each time the pentagon is rotated , it maps back onto itself. There are five values of for which the pentagon maps back onto itself. This is the same as the number of sides of the pentagon.
Answer:
X = 2
Explaination:
To find x, we can solve the rational equation by combining expressions, and isolating the variable x.
6/x=9/3
So, Y is 3 when X is 9.
so, it should go like this:
9/3, 6/2, 3/1
that's how you find it.
