Answer:
38.5 years old
Step-by-step explanation:
Let us represent Mrs.Kelly's age with the parameter (k). It is given that her brother is (15) years younger than her, thus his age is (k - 15). It is given that the sum of their ages is (62). Therefore one can form an equation with the given information and solve for the unknown.
(Mrs.Kelly's age) + (Brother) = (62)
Substitute,
(k) + (k - 15) = 62
Simplify,
k + k - 15 = 62
2k - 15 = 62
Inverse operations,
2k - 15 = 62
2k = 77
k = 38.5
Ok so, this one is a confusing one for me but what I recomend is going on a website call desmos , they have a graphing area there and use y=-4x-7 if I’m right, I do not know so don’t trust me on this
Answer:
x = 4
Step-by-step explanation:
A vertical line at x = 4 ( all coordinates with x coordiante = 4)
13) combine the like terms
9x-5
Answer:
70 Yards.
Step-by-step explanation:
From Ron to Bill is 30 and from there to John adds 40 which equals 70
I might have done the math wrong, or got the whole thing wrong. Sorry if so.