Answer:
.878787.. to a fraction is 29/33
Step-by-step explanation:
= 87/99
Simplify 87/99, which is 29/33
A model of a sailing boat is made to the scale
1 answer:
Answer:
Step-by-step explanation:
We are talking of a linear scale ie 1 cm = 50 cm
So if the real yacht length is 10 meters(10,000 cm), then the model length will be 10000/50 = 200 cm
However, when talking about areas, the scale factor is different. We cannot simply divide 5m by 50
Let's say the sail height is 1 meter and the sail width is 5 meters which will give a sail area of 5 sqm.
The scaled height would be 100/50 = 2cm and scaled width will be 500/50 = 10 cm
So the area of the sail on the model will be 2 x 10 =200 square cm
In short, area of sail on model = (area of sail on real yacht( ÷ (50 x 50)
Since there are 10,000 square cm to 1 square meter we get the answer as 5 x 10000/2500 = 20 square cm
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quadratic formula
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x+y=29
subtract x from both sides for second equation
y=-x-29
subsitute in second equaiton
x(-x-29)=10
-x^2-29x=10
add x^2+29x to both sides
x^2+29x+10=0
quadratic formula
if you have
ax^2+bx+c=0,
x=
so
x^2+29x+10=0
a=1
b=29
c=10
x=
x=
x=
x=
x=
those are the 2 numbers
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D=62*
triangles=180*
use the equation 90+28+d=180
triangles=180*
use the equation 90+28+d=180