Answer:
25X + 25Y = 1700
25X + 100Y = 3200
Step-by-step explanation:
Given that the principal of a high school spent $1700 for X desk and Y chairs at $25 each. Then, the equation will be
25X + 25Y = 1700 ....... (1)
If he had bought half the number of desk in twice the number of chairs he would have spent 1600. That is
25(X/2) + 25(2Y) = 1600
25X/2 + 50Y = 1600
Find the LCM and cross multiply
25X + 100Y = 3200 ........(2)
Area of a triangle is base × height ÷2
base=8x+4 x=-4/8 x=-1/2
height=3x-4 x=4/3
A=b×h÷2
A=(-1/2×4/3)÷2
A=(-4/6)÷2
A=(-4/6)÷2/1 to divide by fractions flip the second and multiply
A=-4/6×1/2
A=-4/12
A=-1/3
A) J = (3/8)*(5/15 -6/15) = (3/8)*(-1/15) = (1/8)*(-1/5) = -1/40
.. K = (3/4)*(4/6 -5/6) = (3/4)*(-1/6) = (1/4)*(-1/2) = -1/8
B) (-1/40) +(-1/8) = -1/40 -5/40 = -6/40 = -3/20
C) The opposite of -3/20 is 3/20
D) Real world: I'm answering Brainly.com questions and one asks the opposite of -3/20.
8 can go as much as 8.125 or 8 1/8 times in 65. This is done by using a basic mathematical operation which is division. 65 is divided by 8 which will give us the answer of 8.125 or in fraction form it would be 8 1/8.
The opposite of -3/4 is 3/4.
