I am in need of help :) please and thank you :):
2 answers:
Answer:
<h2><em><u>2nd</u></em><em><u> </u></em><em><u>Option</u></em><em><u>:</u></em></h2><h2>Step-by-step explanation:
<em><u>Given</u></em><em><u>, </u></em>
Dimensions of the rectangular garden = 2x+11, 3x + 5
<em><u>Therefore</u></em><em><u> </u></em><em><u>,</u></em>
Area of the rectangular garden
= (2x+11) × (3x + 5)
= 3x(2x + 11) + 5(2x + 11)
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Let Jean's speed while running = x mph
Then Jean's speed while riding will be = x+9 mph
Distance covered by running = 8 miles
Distance covered by riding = 11 miles
Total time taken to complete the race = 1.5 hours
As,
So, time for running=
And time for riding=
Equation becomes:
Now, multiply every term by 2x(x+9) to clear denominators:
Simplifying it we get
Solve the quadratic equation using formula
putting a=3 , b= -11, c= -144
we get (x - 9)(3x + 16) = 0
where x=9 and x=
Neglect the negative answer as speed cannot be negative, so x = 9 mph
Hence, Jean's running speed is 9 mph and riding speed is x+9 = 9+9 = 18 mph
Answer: The percentage of the original price was his discount = 10%
Step-by-step explanation:
Given: original price = $60
Price after discount = $54
Discount = Price after discount - original price
= $ (60-54) = $6
The percentage of the original price was his discount =
Hence, the percentage of the original price was his discount = 10%