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3 years ago

1. Kevin jogged 5.2 miles each day for 18 days last month. How many miles did she jog last month?

Mathematics

1 answer:

Aleks04 [339]3 years ago

3 0

Answer:

93.6 Miles

Step-by-step explanation:

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Can someone please help me this is serious!!!!!!

Ulleksa [173]

what are the options?

4 0

4 years ago

Most people can walk about 3000 feet in 15 minutes.

insens350 [35]

200 ft per min i believe

5 0

3 years ago

The ratio of the diameters is 15:11. If the diameter of the smaller ball is 55cm, what is the volume of the larger ball? Round t

gizmo_the_mogwai [7]

Answer:

220,781.25 cubic cm

Step-by-step explanation:

Given ratio of the diameters = 15:11

Let the actual value of of diameters be 15x and 11x to maintain the ratio of 15:11

Given that smaller one has diameter of 55cm

thus 11x = 55cm

x = 55/11 cm = 5

Thus, diameter of larger ball = 15xcm= 15*5cm =75cm.

we know that radius is half of diameter

Radius = diameter/2

Thus radius of larger ball = 75/2 cm = 37.5 cm.

Volume of sphere is given by $(4/3)\pi r^3$

we know that ball has spherical shape

thus volume of larger ball is calculated as given below

$volume \ of \ ball = (4/3)\pi r^3\\=> volume \ of \ ball = (4/3)*3.14* 37.5^3\\=> volume \ of \ ball = (4/3)*3.14* 37.5^3\\=> volume \ of \ ball = 220,781.25$

Thus, volume of larger ball is 220,781.25 cubic cm

5 0

3 years ago

Can someone walk me through how to evaluate this?

zubka84 [21]

Answer:

$\frac{1}{5}$

Step-by-step explanation:

For a negative exponent you always flip the number so instead of $5^{-1}$ it would be $\frac{1}{5^{1} }$ and 5 to the first power is 5

Now for $5^{0}$ any exponent with a zero it always equals 1

So $\frac{1}{5} * 1 = \frac{1}{5}$

Hope this helps!

6 0

4 years ago

Find the dimensions of the regular corral split into 2 pens of the same size producing the greatest possible enclosed area given

mrs_skeptik [129]

Answer:

Length = 225 ft

Width = 150 ft

Step-by-step explanation:

If L is the length and W is the width, then:

900 = 2L + 3W

A = LW

Solve for W in the first equation:

3W = 900 − 2L

W = 300 − ⅔ L

Substitute into the area equation:

A = L (300 − ⅔ L)

A = 300L − ⅔ L²

Use calculus to find dA/dL and set to 0, or use the formula for vertex of a parabola.

Using calculus:

dA/dL = 300 − 4/3 L

0 = 300 − 4/3 L

L = 225

Using vertex formula:

L = -b / (2a)

L = -300 / (-4/3)

L = 225

Find the width:

W = 300 − ⅔ L

W = 150

You got the right answers, but the problem says to assume that the length is greater than the width.

3 0

3 years ago