It would take 5 hours for all the bacteria to die. 1000 divided by 5 is 200 so 200x5=1000
2100 calories
We find this by multiplying 600 times 3.5
An easy way to do this is multiplying 600 times 3 (1800) and the adding half of 600 (300) to your number for the final number of 2100 calories.
Answer is B
hope this help .........
Answer:
x = 3, y = -2, and z = 4
Step-by-step explanation:
x + y + z = 5 -2x - 3y + 2z = 8
3x - y - 2z = 3 x + y + z = 5....multiply by 3
---------------------add ----------------------------
4x - z = 8 -2x - 3y + 2z = 8
3x + 3y + 3z = 15
--------------------------- add
x + 5z = 23
4x - z = 8
x + 5z = 23....multiply by -4
---------------------
4x - z = 8
-4x - 20z = - 92 (result of multiplying by -4)
------------------------add
-21z = - 84
z = -84/-21
z = 4 <=====
4x - z = 8 x + y + z = 5
4x - 4 = 8 3 + y + 4 = 5
4x = 8 + 4 y + 7 = 5
4x = 12 y = 5 - 7
x = 12/4 y = -2 <====
x = 3 <====
Answer:
x = 3.5
Step-by-step explanation:
First, we'll expand the parenthesis by multiplying 2x and -9 with 5:
Let's just simplify -45 + 3:
Now we can add 42 to both sides:
Finally, let's divide both sides by 10 to find x:
Answer: x = 3.5