Please use " ^ " to denote exponentiation: <span>2x^2 + 3xy – 4y^2
Now let x=2 and y= -4:
2(2)^2 + 3(2)(-4) - 4(-4)^2 = 8 - 24 -4(16) = -16 - 4(16) = -5(16) = -80 (answer)</span>
Answer: y-12
Step-by-step explanation:
-3(y+4)+4y
first distribute teh -3 to the y and the 4, so you get -3y and -12. Then combine like terms. -3y-12+4y, add the -3y and 4y, you get y. So the answer is y-12.
Answer:
false: the event will never occur; the event will definitely occur; the event is likely to occur
true: there is a small chance that the event will occur
Step-by-step explanation:
Hello! So for the first part, we do the distributive property by multiplying what's inside the parenthesis by the outside term. 25 * p is 25p. 25 * 37 is 925. The expression becomes 25p + 925 = 2,701. Now, let's subtract 925 from both sides. 925 - 925 cancels out. 2,701 - 925 is 1,776. Now, let's divide each side by 25 to isolate the p. 25p/25 cancels out. 1,776/25 is 71.04. Let's test this. 25 * 71.04 is 1,776. 1,776 + 925 is 2,701. 2,701 = 2,701. There. p = 71.04.
Answer:
1. 1.5 inches per minute
2. 90 inches per hour
Step-by-step explanation:
speed =
1. total distance covered = +
=
=
= 4 inches
Total time taken = +
=
=
= 3 minutes
The ants average speed =
= 1
= 1.5
The ants speed is 1 inches per minute.
2. Since;
60 minutes = 1 hour
3 minutes = x hours
x =
=
= 0.05 hours
Speed =
= 90 inches per hour
The red ants speed is 90 inches per hour.