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3 years ago

Put these fractions in order of size, smallest to largest. 1/3 2/5 3/8

Mathematics

1 answer:

slega [8]3 years ago

3 0

2/5 1/3 3/8 this is your answer I think so I wrong sometimes

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1.) A 20° sector in a circle has an area of 21.5π yd².

a_sh-v [17]

Part 1) A 20° sector in a circle has an area of 21.5π yd².

What is the area of the circle?

we know that

the area of a circle represent a sector of $360$ degrees

so by proportion

$\frac{21.5\pi }{20} =\frac{x}{360} \\ \\ x*20=360*21.5\pi \\ \\x=(360*21.5*3.14)/20\\ \\x= 1,215.18\ yd^{2}$

therefore

the answer part 1) is

The area of the circle is $1,215.18\ yd^{2}$

Part 2) What is the area of a sector with a central angle of 3π/5 radians and a diameter of 21.2 cm?

we know that

the area of the circle is equal to

$A=\pi r^{2}$

where

r is the radius of the circle

in this problem we have

$Diameter=21.2\ cm\\ r=Diameter/2\\r=21.2/2\\r= 10.6\ cm$

Find the area of the circle

$A=\pi r^{2}$

$A=\pi*10.6^{2}$

$A=352.8104\ cm^{2}$

Find the area of the sector

we know that the area of the circle represent a sector of $2\pi$ radians

by proportion

$\frac{352.8104}{2\pi }=\frac{x}{(3\pi/5)} \\\\x*2\pi=(3\pi*352.8104)/5\\ \\x= 105.84\ cm^{2}$

therefore

the answer part 2) is

the area of the sector is

$105.84\ cm^{2}$

7 0

3 years ago

Select the fraction equivalent of 0.06. reduce to the lowest terms

viva [34]

Answer: 3/50

Step-by-step explanation:

0.06 = 6/100 , 100 would be the denominator because we have two figures after the decimal point. Each figures can also be represented by 10,

Again,

0.06 = 6 × 10-²

Now 0.06 = 6/100

= 3/50.

Therefore, the fractional form = 3/50 in its lowest term.

3 0

3 years ago

0.4(2-q=0.2(q+7) hurry please

Lerok [7]

Answer:

q=-1

Step-by-step explanation:

.8-.4q=.2q+1.4

-.2q -.2q

.8-.6q=1.4

-.8 -.8

-.6q= 0.6

/-.6 /-.6

q= -1

5 0

3 years ago

PLEASE HELP!! 25 POINTS!! REALLY!!!

Snezhnost [94]

Reflex angle.
hope this helped!

3 0

3 years ago

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Translate question into an equation, let x be unknown number 6.4 is 90% of what number?

lisov135 [29]

$1 \% = \frac{1}{100}\\ \\90 \% * x =6.4 \\ \\\frac{90}{100}x=6.4 \\ \\\frac{9 }{10 }x=6.4 \ \ *(\frac{10}{9})\\ \\x= 6.4 *\frac{10}{9}\\ \\x=\frac{64}{9}\\ \\x = 7\frac{1}{9}$

8 0

3 years ago

Read 2 more answers