Answer:
about 65 days
Step-by-step explanation:
46/30 = 1.53 pounds per day
100/1.53 = about 65
Y=8-x
7=2-y
First substitute the y in the second problum for 8-x
7=2-8+x
Now subtract the 8 and the 2
7=-6+x
add the -6 on both sides to solve for x
13=x
Now substitute the x for the 13 into the first problum
y=8-13
Subtract the 13 and 8 to solve for y
y=-5
Your answer
y=-5
x=13
so your correct answer would be
B:(13,-5)
Lets first convert the tons to pounds.
1 ton = 2000 pounds
18 × 2000 = <span>36000
</span><span>18 tons = 36000 pounds
</span>
36000 + 42 = <span>36042
</span>36042 ÷ 3 = <span>12014
</span>
18 tons 42 pounds divided by 3 is <span>12014. </span>
Don’t know I’m just answering thus because it doesn’t let me ask a question unless I answer a random question. Sorry
Answer: 12 friends.
Step-by-step explanation:
the data we have is:
Mei Su had 80 coins.
She gave the coins to her friends, in such a way that every friend got a different number of coins, then we have that:
The maximum number of friends that could have coins is when:
friend 1 got 1 coin
friend 2 got 2 coins
friend 3 got 3 coins
friend N got N coins
in such a way that:
(1 + 2 + 3 + ... + N) ≥ 79
I use 79 because "she gave most of the coins", not all.
We want to find the maximum possible N.
Then let's calculate:
1 + 2 + 3 + 4 + 5 = 15
15 + 6 + 7 + 8 + 9 + 10 = 55
now we are close, lets add by one number:
55 + 11 = 66
66 + 12 = 78
now, we can not add more because we will have a number larger than 80.
Then we have N = 12
This means that the maximum number of friends is 12.