Answer:
a) x^2 + y^2
b) 9-xy
Step-by-step explanation:
Here, we want to write the algebraic statements as expressions;
a) The sum of the squares of x and y
The square of x is x^2
The square of y is y^2
The sum of the squares is x^2 + y^2
ii) Product of x and y subtracted from 9
The product of x and y is x * y = xy
Subtracting these from 9, we have;
9-xy
Answer:
X=15
Step-by-step explanation:
You combine like terms
Your answer will be -7x^5 - 2x^3 - 6x^2 -9
Answer:
8%
Step-by-step explanation:
So we have two investments. The first is 500 with an interest rate of x while 2000 has an interest rate of x+.005 (.005 is .5 %),
annual interest means it gets interest once a year, it then says in total, after one year, so one time getting interest he gets 210 total, so in total the money is 500 + 2000 + 210. So let's set up an equation with all this
500x + 2000(x+.005) = 2710
500x + 2000x + 10 = 2710
2500x = 2700
x = 1.08
So that means we multiply 500 by 1.08, which represents 8% and 2000 by 1.085. But the question is just asking for the interest rate for 500 so the answer is 8%
If you don't understand how I did anything let me know.
