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2 years ago

Lily ran 1,000 meters in 12 minutes. How many meters/minute did she run?

Mathematics

1 answer:

vladimir2022 [97]2 years ago

5 0

Answer:

1,000 divided by 12=

aprox 83.3 meters per minute

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Which expression converts 4pi radians to degrees?

grin007 [14]

4pi/2pi = x/360
use a proportion
2 radians equals 360 degrees
x = 720 degrees

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3 years ago

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Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq

TiliK225 [7]

Answer:

The perimeter of rectangle is $18\ cm$

Step-by-step explanation:

Let

x-----> the length of the rectangle

y----> the width of the rectangle

we know that

$x=y+5$ ----> equation A

$120=xy+2x^{2}+2y^{2}$ ---> equation B (area of the constructed figure)

substitute the equation A in equation B

$120=(y+5)y+2(y+5)^{2}+2y^{2}$

$120=(y+5)y+2(y+5)^{2}+2y^{2}\\ 120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\ 120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\120=5y^{2}+25y+50\\5y^{2}+25y-70=0$

using a graphing calculator -----> solve the quadratic equation

The solution is

$y=2\ cm$

Find the value of x

$x=y+5 ----> x=2+5=7\ cm$

Find the perimeter of rectangle

$P=2(x+y)=2(7+2)=18\ cm$

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3 years ago

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A submarine starts at 0 units and has groups of 3 floats and groups of 4 anchors attached.

Novosadov [1.4K]

Answer:

isn't -8, right?

Step-by-step explanation:

im not really good at math.

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2 years ago

Find the absolute value of... |7|<br><br> -7 or 7?

erastova [34]

The answer to this is 7

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Rectangle WXYZ with height h and width w is rotated 360° about segment WY. Which choice gives the solid formed and its surface a

inna [77]

Answer:

Cylinder, A = 2π • w • h + 2π • w to the second power square units

Step-by-step explanation:

A right circular hollow cylinder is a 3D region enclosed by two right circular cylinders having the same axis and two parallel annular bases perpendicular to the cylinders' common axis which will be formed when you rotate the given by 360 degrees.

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2 years ago

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