9514 1404 393
Answer:
base: 12 in
altitude: 7 in
Step-by-step explanation:
The formula for the area of a triangle is ...
A = 1/2bh
Filling in the given information, we have ...
42 = 1/2(b)(b -5)
b^2 -5b -84 = 0 . . . . multiply by 2, put in standard form
(b -12)(b +7) = 0 . . . . factor
The only positive solution is b = 12
The base is 12 inches; the altitude is 7 inches.
Answer:
(x, y) = (0, -3)
Step-by-step explanation:
The point Y is on the y-axis. Its x-coordinate will be zero, since it is neither left nor right of the y-axis.
The point Y is 3 units below the x-axis, so its y-coordinate is -3. This is the value you can read on the y-axis next to point Y.
(x, y) = (0, -3)
_____
U(-5, 0)
V(-3, 3)
W(5, 5)
X(-4, -5)
Y(0, -3)
Z(2, -1)
It is a good idea to learn to read coordinates from a graph. You will be doing it a lot. The x-coordinate is the number of units right of the y-axis. The y-coordinate is the number of units up from the x-axis. Left or down makes the coordinate negative.
jesus man i can't read a single thing
This post was made by alessdaiwastaken. If this helped you, please mark Brainliest. If it didn't, then feel free to correct me!
9514 1404 393
Answer:
Step-by-step explanation:
The perimeter is the sum of the side lengths. Those that are unmarked are assumed to match the length of the nearest parallel side.
Clockwise from upper left, the perimeter is ...
P = 8 + 5 + 4 + 4.5 + 15 + 5.6 + 4 + 5
P = 51.5 . . . feet
__
The area can be figured using the formulas for area of a parallelogram, rectangle, and trapezoid. These are, respectively, ...
- A = bh
- A = bh
- A = (1/2)(b1 +b2)h
parallelogram area = (8 ft)(3 ft) = 24 ft²
rectangle area = (8 ft)(4 f) = 32 ft²
trapezoid area = (1/2)(8 ft +15 ft)(4 ft) = 46 ft²
Then the total area of the figure is ...
A = 24 ft² +32 ft² +46 ft²
A = 102 ft²
_____
<em>Additional comment</em>
The figure shown is impossible. The trapezoid side lengths and height are consistent with a bottom base of length 14, not 15.