Answer:
Speed = 0.2 miles per minute.
Step-by-step explanation:
Given : Jamaal ran 6 miles in 30 minutes.
To find : Which expression shows how to correctly determine his speed in miles per minute.
Solution : We have given
Distance = 6 miles.
Times= 30 minute .
Speed = 
.
Speed = 
.
Speed = 0.2 miles per minute.
Therefore, Speed = 0.2 miles per minute.
Answer:
30
Step-by-step explanation:
First angle to the right inside the triangle can be 60
Other angle inside the triangle can be 40
The upper angle outside the triangle 80
The last angle 100
20% off means it is selling for 80% of the original price ( 100% - 20% =80%)
Divide the sale price by 80% as a decimal:
380/0.80 = 475
The original price was $475
Justify:
Multiply the original price by 20% and subtract:
475 x 0.20 = 95
475-95 = $380 which is the sale price.
R = 2 / (1 + sin <span>θ)
Using the following relations:
R = sqrt (x^2 + y^2)
sin </span>θ = y/R
<span>
R = 2 / (1 + y/R)
R</span>(1 + y/R<span>) = 2
</span><span>R + y = 2
R = 2 - y
sqrt(x^2 + y^2) = 2 - y
Squaring both sides:
x^2 + y^2 = (2 - y)^2
x^2 + y^2 = 4 - 4y + y^2
x^2 + 4y - 4
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