1.
Part A.
bh + hr = 25
h( b + r ) = 25
h = 25/ b + r
Part B
hr = 25 - bh
r = (25 - bh)/h
r = 25/h - b
2.
Part A.
xy = r - h
-h = -r + xy
divide both sides by -1
h = r - xy
Part B
xy = r - h
xy + h = r
r = xy + h
3.
4x - 2y = 8
-2y = 8 - 4x
divide through by -2
y = 8/-2- 4x/-2
y = -4 + 2x
therefore Camille solved the equation correctly
4.
Answer:
a. <em>about 187 feet</em>
b. <em>about 19 trees</em>
c. <em>about 228 dollars</em>
What we know:
- 80 ft = hypotenuse
- 35 ft = short side
- x ft = long side
- it is a <em>right</em> triangle
a. Find the perimeter of the field. <em>about 187 feet</em>
<u>solve for the missing side length ('x')</u>:
- 35^2 + x^2 = 80^2
- 1225 + x^2 = 6400
- x^2 = 5175
- x = 15sqrt(23) or approx. 71.92
<u>add all side lengths</u>:
- P = 80 + 35 + 71.92
- P = 115 + 72 (rounded)
- P = 187 ft
b. You are going to plant dogwood seedlings about every ten feet around the field's edge. How many trees do you need? <em>about 19 trees</em>
- divide perimeter by 10 187/10 = 18.7
- round 18.7 trees = about 19 trees
c. If each dogwood seedling sells for $12, how much will the trees cost? <em>about $228</em>
- multiply trees by cost of each $12 x 19 trees = $228
- about $228 for the trees
Answer:
The answer is C
Step-by-step explanation:
1-(-7)=8
9-(-3)=12
8/12=2/3
Answer:huh
Step-by-step explanation:
Answer:
-9.25
Step-by-step explanation:
