If anyone can help me on this, I would REALLY appreciate it!! [i do check up on this often]
There is an eerie glow in the clearing as the small, strange airships land. Tiny creatures begin climbing out of the airships. There are 2 kinds of creaties: purple creaties with 2 antennas, and blue creatures with 1 large antenna. Altogether there are 23 creatures with 35 antennas.
How many purple and blue creatures have invaded our town?
HELP!! :]
Let x be the number of purple creatures and y be the number of blue creatures.
x + y = 23 = total number of creatures.
2x + y = 35
Solve those two equations for x and y.
x + (35 -2x) = 23
-x = -12
x = 12, y = 23 -x = ?
A cord of wood measured 4 high by 4 feet wide by 8 feet long if the average weight of one square foot of wood is 14.2 pounds how much does a cord of wood weigh?
The east Jackson Public library celebrated library lovers month by giving a book to each student who read at least 10 books at the end of the month 75 students had earned books at a cost of $6.42 per book how much will it cost to give each student a book? Is the answer $481.52.
>> The east Jackson Public library celebrated library lovers month by giving a book to each student who read at least 10 books at the end of the month 75 students had earned books at a cost of $6.42 per book how much will it cost to give each student a book? Is the answer $481.52.
Close! You're off a few pennies. This is pretty straightforward. Just use a calculator, if you're allowed, or multiply on paper.
>> A cord of wood measured 4 high by 4 feet wide by 8 feet long if the average weight of one square foot of wood is 14.2 pounds how much does a cord of wood weigh?
Can't get there from here, McGee!
One square foot of wood is only a surface measurement, not a volume measurement, which is what you would need for this question. If you're talking CUBIC feet of wood, simply multiply L x W x H to get the total cubic feet, then multiply by the weight of one cubic foot of wood.
>> There is an eerie glow in the clearing as the small, strange airships land. Tiny creatures begin climbing out of the airships. There are 2 kinds of creaties: purple creaties with 2 antennas, and blue creatures with 1 large antenna. Altogether there are 23 creatures with 35 antennas.
How many purple and blue creatures have invaded our town?
drwls is on the right track, but I would solve the equations myself instead of relying on the partial answer presented.
Hope this helps!
To solve this problem, we can use a system of equations. Let's use the variables "p" for the number of purple creatures and "b" for the number of blue creatures.
1) We know that there are a total of 23 creatures, so our first equation is: p + b = 23.
2) We also know that there are a total of 35 antennas, and each purple creature has 2 antennas, while each blue creature has only 1 antenna. So our second equation is: 2p + b = 35.
Now we have a system of two equations with two variables. We can solve this system using various methods. One common method is substitution.
Solving equation 1 for "p" gives us: p = 23 - b.
We can substitute this value of "p" into equation 2, like this: 2(23 - b) + b = 35.
Simplifying the equation gives us: 46 - 2b + b = 35, which further simplifies to 46 - b = 35.
By isolating "b", we can subtract 46 from both sides, which gives us: -b = 35 - 46, or -b = -11.
Dividing both sides by -1, we find that "b" is equal to 11.
Now we substitute this value of "b" back into equation 1 to find the value of "p": p + 11 = 23.
Subtracting 11 from both sides gives us: p = 23 - 11, so p = 12.
Therefore, there are 12 purple creatures and 11 blue creatures that have invaded your town.