Answer:
8.612 x 10⁶
Step-by-step explanation:
Given problem:
(8.60×10⁶) + (1.2×10⁴)
Solve by the process of scientific notation;
Solution:
(8.60×10⁶) + (1.2×10⁴)
Adjust the exponent so that they are of the same value;
8.6 x 10⁶ = 860 x 10⁴
So;
(860 x 10⁴) + (1.2×10⁴) = (860 + 1.2) x 10⁴
= 861.2 x 10⁴
or
8.612 x 10⁶
Answer:
b
Step-by-step explanation:
14 on one side and 11 on the other
so 14 - 11 = 3
and the base is already 12
Answer 5 pears and 7 peaches
Explanation: you will need to make two equations to represent the problem
X being for peaches and y for pears
x+y= 12
1.5x + 1.6y= 18.5
We are going to use the elimination method and so we need to cancel either x or y in this case x. So we multiple the top equation by -1.5
-1.5x - 1.5y = -18
1.5x + 1.6y = 18.5
Then we can cancel the x since they are opposite and we can add the rest
0.1y =0.5
Y= 5
Then we can substitute the y into one of the equations
x + 5= 12
x= 7
Answer:
x=8, y=-10
Step-by-step explanation:
Using elimination to solve a system of equations works by manipulating one of the equations so you can cancel out a variable to solve the other.
Here, we can change -3x-2y=-4 into -15x-10y=-20 by multiplying by 5. Because of this, we can eliminate the y variable and end up with -5x=-40 which gets you x=8.
Now, we plug x=8 into one of the original equations and solve for y:
10x+10y=-20
10(8)+10y=-20
80 + 10y = -20
10y = -100
y = -10