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Scilla [17]
3 years ago
8

Only if you know plz help

Mathematics
2 answers:
slava [35]3 years ago
6 0
The correct answer is A:)

Vesnalui [34]3 years ago
4 0

I think it is a and I hope it help you


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an artificial lake is in the shape of a rectangle and has an area of 9/20 square mile. the width of the lake is 1/5 the length o
Gnom [1K]
X=length
y=width
Area (rectangle)=length x width
we suggest this system of  equations:
y=x/5
xy=9/20
solve this system of equations by substitution method:
x(x/5)=9/20
x²/5=9/20
Least common multiple=20
4x²=9
x²=9/4
x=⁺₋√(9/4)
we have two solutions:
x₁=-3/2   it does not validate
x₂=3/2    ⇒y=x/5=(3/2)/5=3/10

The dimensions of the lake are:
lengh=3/2 miles
width=3/10 miles

to check:
Area=3/2 miles x 3/10 miles=9/20 miles².
width is 1/5 the length of the lake ⇒  3/10 miles=(3/2) /5 miles

7 0
4 years ago
Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros.
butalik [34]
I'll try to understand this but I don't really get it because I'm in middle school
6 0
3 years ago
Travis wants to build a fence around his mother's rectangular garden. The length of the garden is 315 centimeters, and the width
Mariulka [41]

Answer: 12.1 meters

Step-by-step explanation:

This is a rectangular fence so it represents a rectangle.

Fencing the garden will require going around it therefore you are looking for the perimeter.

Perimeter of a rectangle = (2 * Length) + ( 2 * Width)

= (2 * 315) + ( 2 * 290)

= 1,210 cm

Convert to meters:

A meter is 100 centimeters

= 1,210 / 100

= 12.1 meters

7 0
3 years ago
Enter the unknown number for the following<br> 483 divided by __ = 21
Mice21 [21]
483 divided by 23 = 21
6 0
3 years ago
Read 2 more answers
4(x+3)=3(3x-1)
zhuklara [117]
24=26 is the answer... want mhe 2 show you?
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4 years ago
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