Answer:
8 students got an A
Step-by-step explanation:
20 x 0.40 = 8
Brainliest please
Answer:
Here. Tell me if you don't understand my writing.
Answer:
First, we need to know the formula when a scale factor appears:
New coordinate = (scale factor)*(old coordinate)
So using this formula we have:
1) c' = (-2,1)*2/3
c' = (-4/3,2/3)
2) r = (-5,2)*2/3
r = (-10/3,4/3)
3) a = (-6,7)*2/3
a = (-4,14/3)
4) f = (-3,9)*2/3
f = (-2,6)
5) t = (-1,6)*2/3
t = (-2/3,4)
The cost per foot of redwood and of pine is $3.5 and $1.5 respectively.
<h3>How to solve simultaneous equation?</h3>
let
- cost of redwood = x
- cost of pine = y
50x + 70y = 280
100x + 60y = 440
Multiply (1) by 2
100x + 140y = 560
100x + 60y = 440
subtract to eliminate x
80y = 120
y = 120/80
y = $1.5
substitute y = 1.5 into (1)
50x + 70y = 280
50x + 70(1.5) = 280
50x + 105 = 280
50x = 280 - 105
50x = 175
x = 175 / 50
x = $3.5
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The area of the triangle is found as 12 unit².
<h3>What is defined as the triangle?</h3>
A triangle is a three-sided polygon with three sides that closes a space.
- The three sides are formed by lines, line segments, or rays (in just about any combination).
- Three vertices, or corners, are formed if three sides form or meet.
- A triangle's height or altitude is calculated by drawing a perpendicular line through one side to the opposite angle.
- The base is the side with which the altitude intersects wherever it is built.
The formula for the area of the triangle is;
Area of triangle= ½ × base × height
The base is given as 6 units and the height is 4 units. (count 1 column of graph as 1 unit).
Put the values in formula.
Area of triangle = ½(6)(4)
Area of triangle = 12 unit.²
Therefore, the area of the triangle is found as 12 unit.²
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