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:
9
Step-by-step explanation:
the answer is 9 because 7 goes into 63 evenly 9 times
Answer:
there's not options :/ nobody can answer this
The answer is 13 minus 3 equals 10
The length and width of a new rectangle playing field are 214 yards and 52 yards respectively.
<h3>What is the area of the rectangle?</h3>
It is defined as the area occupied by the rectangle in two-dimensional planner geometry.
The area of a rectangle can be calculated using the following formula:
Rectangle area = length x width
We have:
The length of a new rectangle playing field is 6 yards longer than quadruple the width.
Let's suppose the length is l and width is w of a rectangle:
From the problem:
l = 6 + 4w
Perimeter P = 2(l + w)
532 = 2(l + w)
Plug l = 6+4w in the above equation:
532 = 2(6 + 4w + w)
266 = 6 + 5w
260 = 5w
w = 52 yards
l = 6 +4(52) = 214 yards
Thus, the length and width of a new rectangle playing field are 214 yards and 52 yards respectively.
Learn more about the area of rectangle here:
brainly.com/question/15019502
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