Answer:
Width = 3 feet
Length = 7 feet
Step-by-step explanation:
x represents the width of doghouse so,
Width = x
Length is 4 times more than its width
Length = x+4
Area of doghouse = 21 square feet
We know
Area of rectangle = Length * Width
21 = (x+4)*x
21 = x^2+4x
=> x^2+4x-21=0
Solving the above quadratic equation by factorization to find the value of x
x^2+7x-3x-21=0
x(x+7)-3(x+7)=0
(x+7)(x-3)=0
x+7 =0 and x-3=0
x= -7 and x =3
Since the width of rectangle can never be negative so, x=3
Width =x = 3 feet
Length = x+4 = 3+4 = 7 feet
SA= 2LW+ 2LH+2WH
Answer: 34
Answer:
22.05
Step-by-step explanation:
21x150%=31.5
31.5×30%=9.45
31.5-9.45=22.05
Answer:
Isosceles and scalene
Step-by-step explanation:
Isosceles triangle means two angles must be equal and one angle 90 degrees. It is called isosceles right triangle.
We know that one angle is 90 degrees
90 -45-45 degrees
This could be scalene triangle, the other two angles must add upto 90 degrees
It could be 30 and 60 or any other combination.
90-60-30
The answer is Isosceles and scalene
Hope this will helpful.
Thank you.
Answer:
Last month balance= $23.490
Step-by-step explanation:
Giving the following information:
Current balance= $16,443
Percentage decrease= 30%
<u>To calculate the last's mont balance, we need to use the following formula:</u>
Last month balance= current balance / (1 - percentage decrease)
Last month balance= 16,443/0.7
Last month balance= $23.490