3 years ago

What percent is represented by the shaded area?

Mathematics

2 answers:

kicyunya [14]3 years ago

8 0

Answer:

1.91%

Step-by-step explanation:

kumpel [21]3 years ago

3 0

95.5 percent is the answer I think

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The tax on a $50 item is $3.00.<br>Find the tax on a $140 item.

Pie

Answer:

The tax is 6% of the item. 140*0.06=$8.40

Step-by-step explanation:

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2 years ago

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Every week, Enrique walks one mile each day for 4 days of the week. He can usually walk one mile in about 14 to 16 minutes.

Snezhnost [94]

Answer:

512

Step-by-step explanation:

Beacuse 4x3 =32 32 x 16 =512

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3 years ago

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The sum of the circumference of a circle and the perimeter of a square is 24. Find the dimensions of the circle and square that

lyudmila [28]

Answer:

The radius of the circle is $r=1.68\ units$

The length of the square is $x=3.36\ units$

Step-by-step explanation:

we know that

The circumference of a circle is equal to $C=2\pi r$

The perimeter of the square is equal to $P=4x$

$24=2\pi r+4x$

Simplify

$12=\pi r+2x$

$x=(12-\pi r)/2$ -----> equation A

The area of a circle is equal to $A=\pi r^{2}$

The area of a square is $A=x^{2}$

The total area is equal to

$At=\pi r^{2}+x^{2}$ -----> equation B

substitute equation A in equation B

$At=\pi r^{2}+[(12-\pi r)/2]^{2}$

This is a vertical parabola open upward

The vertex is the minimum

The x-coordinate of the vertex is the radius of the circle that produce a minimum area

The y-coordinate of the vertex is the minimum area

Solve by graphing

The vertex is the point (1.68, 20.164)

see the attached figure

therefore

The radius of the circle is

$r=1.68\ units$

Find the value of x

$x=(12-\pi r)/2$

assume

$\pi =3.14$

$x=(12-(3.14)*(1.68))/2$

$x=3.36\ units$

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3 years ago

A group of students is arranging squares into layers to create a project. The first layer has 5 squares. The second layer has 10

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Answer: Its B i just took the test

Step-by-step explanation:

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3 years ago

What's the answer i tried to work the problem out

Sindrei [870]

The absolute value of I9I is 9 and -9 but I would put 9 first if you can only pick one

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3 years ago