Answer:
49k
Step-by-step explanation:
Okay so for Mike, he has $22 in his account.
He deposits $11.50 in it each week, and they want to know how much he has in 12 weeks.
First, multiply $11.50 * 12, which is $138. Then add the $22 that's already in the account, which brings him to $160.
Now for Tim,
He has $218 and withdraws $13 every week.
13 * 12 = 156
Now subtract 218 and 156
218 - 156 = 62
So at the end of 12 weeks, Mike has $160 dollars in his account, and Tim has $62 in his account.
The formula to find the perimeter of a rectangle is P = 2(l + w), where p is perimeter, l is length and w is width,
The length of the playground is 16 yards, and the width is 20, because 16 x 20 = 320 and 16 + 4 = 20.
P = 2(l + w)
P = 2(16 + 20)
P = 2(36)
P = 72.
The perimeter is 72 yards.
Hope this helps!!
Answer:
- you - 4 rocks and 16 fossils
- friend - 12 rocks and 8 fossils
Step-by-step explanation:
Let the rock be r and the fossil be f
<u>Equations</u>
- You: r + f = 20
- Friend: 3r + 1/2f = 20
<u>Double the second equation and subtract the first one:</u>
- 2(3r + 1/2f) - (r - f) = 2*20 - 20
- 6r - r = 20
- 5r = 20
- r = 4
<u>Then find f:</u>
So you collect 4 rocks and 16 fossils
<u>Friend collects:</u>
- 4*3 = 12 rocks and
- 1/2*16 = 8 fossils
Answer:
Step-by-step explanation:
in x+3y=4
x = 3y +4 y = -1/3x + 4/3
in -x+y=4
x = y−4 y = x+4
