Answer:
100
Step-by-step explanation:
10(-2.5) = -25 since negative times positive is negative.
-25(-4)=100 since negative times negative is positive.
Basically, the negative inverts the sign so a negative negates a positive yielding a negative while a negative negates a negative yielding a positive.
Think of it as not not vs not
Answer:
- 12
Step-by-step explanation:
The easy way to set this up is to take the middle number to be x
(x - 1) + x + (x + 1) = - 33
x - 1 + x + x + 1 = - 33
3x = - 33
x = -33/3
x = - 11
the lowest number is going to be x - 1 = -11 -1 = - 12
The middle number = - 11
The largest number = - 11 + 1 = - 10
At least two sides AND two angles of an isosceles triangle are congruent.
Answer:
$3391.54
Step-by-step explanation:
compound interest formula is
× 
Fv= future value
Pv= present value
i= annual interest rate
n= number of days/months/weeks etc
t= time in years
in this case I used "i" as weekly interest rate
This is a binomial. You can multiply it out by substituting 7i-4j for a, and 4i+3j for b.
(7i-4j)(4i+3j)
you come up with: 28i^2 + 21ij - 16ij -12ij
this then comes out to be 28i^2 -7ij
this is an odd choice of variables for a problem.. let me know if this is the answer you were looking for.
