add the two equations together
5a+5b=25
-5a+5b=35
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0 + 10b =60
divide by 10
b=6
5a + 5b = 25
5a +5(6) = 25
5a +30 =25
subtract 30 from each side
5a =-5
divide by 5
a = -1
Answer (-1,6)
or a=-1 b=6
Area of a triangle can be found using the equation base x height / 2
(5)(6)/2 = 30/2 = 15
The area of the triangle is 15mm
Answer:
A
Step-by-step explanation:
Intercept form
Answer:
A. 15,840 feet
Step-by-step explanation:
1 mile = 5,280 feet (I think "five tomatoes" is helpful: five tomatoes --> five-two-eight-oh)
multiply both sides of equation by 3: 1 * 3 = 5,280 * 3
simplify: 3 miles = 15,840 feet, which means A is the answer
