Answer:
57
Step-by-step explanation:
-7a + 4b
Let a = -3 b = 9
Substitute the values in
-7(-3) + 4(9)
Multiply
21 + 36
Add
57
Answer:
6 5/12
Step-by-step explanation:
Given the expression :
4 2/3 + 1 3/4
The sum of the numbers :
4 2/3 + 1 3/4
14/3 + 7/4
L.C.M of 3 and 4 = 12
(56 + 21) / 12
77 / 12
= 6 5/12
Answer:
155
Step-by-step explanation:
calculate the areas of 2 rectangles
method A
one rectangle with lengths 8 and 10
the other 15 and 5
so 8x10 + 15x5 = 80 + 75 = 155
method B
one traingle with lenghts 5 and 7
the other 15 and 8
so 15x8 + 5x7 = 120 + 35 = 155
So all your doing is going 3 jumps to the positive side and 4 jumps to the negative side.
Answer:I think area but if I'm wrong I apologize
