Evaluate the following expressions A=10*4//2+4-2//2+4-3+5//8
A=5+6//3+10*3//4+2+3//4
Answers
Explanation:
5x+8y=9 ----- (1)
2x+3y=4 ----- (2)
From equation (1) assume the values of x and y to satisfy the equation to zero.
5x+8y−9=0 ------ (3)
Put x=5,y=−2 in equation (3)
5(5)+8(−2)−9=0
25−16−9=0
25−25=0
0=0
Again, put x=1,y=0.5 in equation (3)
5(1)+8(0.5)−9=0
5+4−9=0
9−9=0
0=0
Now plotting (5,−2),(1,0.5) and joining them, we get a straight line.
From equation (2) assume the values of x and y to satisfy the equation to zero.
2x+3y=4 ----- (4)
Put x=5,y=−2 in equation (4)
2(5)+3(−2)−4=0
10−6−4=0
10−10=0
0=0
Again put x=2,y=0 in equation (4)
2(2)+3(0)−4=0
4−0−4=0
4−4=0
0=0
Plotting (5,−2),(2,0) and joining them, we get another straight line.
Answer:
The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.