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Kruka [31]
4 years ago
10

The area of a circle is 28.26 square centimeters. What is the circle’s diameter?

Mathematics
1 answer:
ikadub [295]4 years ago
4 0

Answer:

The circle's diameter is 6cm

Step-by-step explanation:

A = 28.26 cm^2

D = \sqrt[2]{\frac{A}{\pi } }

D = \sqrt[2]{\frac{28.26}{\pi } }

D = 6cm

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To finance a bridge costing $94,500, the state contributed twice as much as the county and the county contributed twice as much
bearhunter [10]
The city contributed $13,500; the county contributed $27,000; and the state contributed $54,000.

Let x be the amount the city contributes.  Since the county contributes twice as much as the city, the county's amount is 2x.  Since the state contributes twice as much as the county, the state's amount is 2(2x) = 4x.

They total 94,500:
x+2x+4x = 94500
7x = 94500

Divide both sides by 7:
x = 13500
2x = 27000
4x = 54000
5 0
3 years ago
72/1000 as a decimal
polet [3.4K]

Answer: 0.072

Explanation: There are 3 zeros in 1000, so there must be 3 decimal digits.

5 0
3 years ago
Read 2 more answers
Determine whether the two figures are similar. If so, give the similarity ratio of the smaller figure to the larger figure. The
zloy xaker [14]
We have that

smaller figure
ha=8.7
ra=1.6

larger figure
hb=10.44
rb=1.92

ha/hb=8.7/10.44----> 0.83
ra/rb=1.6/1.92-------> 0.83
ratio smaller figure to the larger figure
1.6/1.92-------> divided by 1.6 both members[1.6/1.6]/[1.92/1.6]-------> 1/1.2

the ratio ha/hb is equal to the ratio ra/rb
so
the smaller figure and the larger figure are similar
and
the ratio smaller figure to the larger figure is equal to---->  1/1.2

the answer is
the option yes 1/1.2
8 0
3 years ago
The amount of trout y (in tons) caught in a lake from 1995 to 2014 can be modeled by the equation y = -0.08x2 + 1.6x + 10, where
Lapatulllka [165]
For this case, the first thing we want to do is substitute the value of y = 15 in the equation.
 We have then:
 15 = -0.08x ^ 2 + 1.6x + 10
 Rewriting we have:
 0 = -0.08x ^ 2 + 1.6x + 10 - 15
 0 = -0.08x ^ 2 + 1.6x - 5
 The solutions are:
 x1 = 3.876275643042054
 x2 = 16.123724356957947
 Nearest whole number:
 x1 = 4
 x2 = 16
 were about 15 tons of trout caught in the lake in the years:
 1995 + 4 = 1999
 1995 + 16 = 2011
 Answer:
 The year 1999 and the year 2011
3 0
3 years ago
The circumference of a circle is 16Pi ft.<br><br> The radius is <br> ft.
mafiozo [28]
8pi ft

Just divide 16 by 2 because it’s half of the diameter
6 0
3 years ago
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