All categories

2 years ago

Joe has read 140 pages of his 300 page book what percentage has he read please show work

Mathematics

1 answer:

Lostsunrise [7]2 years ago

8 0

140/300=14/30
14/30=7/15
So 7/15 is _
46.6%

You might be interested in

What is 60% out of 40?

Afina-wow [57]

Answer:

Step-by-step explanation:

Divide 40 by 10 and multiply your answer by 6

8 0

3 years ago

Find the ratio of the volume of one sphere to the volume of the right cylinder

yarga [219]

Answer:

Step-by-step explanation:

<em>Let $r$ be the radius of one sphere.</em>

Volume of sphere is $V=\frac{4}{3}\pi r^3$

Since radius is r, the height of the cylinder will be $4r$

Also, the cylinder has the same radius as the sphere: $r$

Volume of Cylinder is $V=\pi r^2 h$

Plugging in the values we get: $V=\pi (r)^{2}(4r)=4\pi r^3$

<u>Ratio of volume of 1 sphere to volume of cylinder is</u>:

$\frac{\frac{4}{3}\pi r^3}{4\pi r^3}=\frac{\frac{4}{3}}{4}=\frac{4}{3}*\frac{1}{4}=\frac{1}{3}$

The ratio is 1:3

Answer choice B is right.

5 0

3 years ago

Find the Surface Area and Volume of Sphere with radius 12 cm.

Gnom [1K]

$Radius:r=12cm\\\\Surface\ area:\\A=4\pi r^2\to A=4\pi\cdot12^2=4\pi\cdot144=576\pi\ (cm^2)\\\\Volume:\\V=\frac{4}{3}\pi r^3\to V=\frac{4}{3}\pi\cdot12^3=\frac{4}{3}\pi\cdot1728=4\pi\cdot576=2304\pi\ (cm^3)$

8 0

2 years ago

Read 2 more answers

The proper sequence to use in solving 3x - 2 = 60 is:

IrinaVladis [17]

If you follow the steps of PEMDAS it should be Multiply by 3,subtract 2.

8 0

3 years ago

AB ← → is tangent to circle O at point A. If m∠AOB = 72degrees what is m∠ABO ?

tatuchka [14]

Answer:

$m\angle ABO=18^o$

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

If AB is tangent to circle O at point A

then

AB is perpendicular to AO (radius) and Triangle ABO is a right triangle

$m\angle ABO+m\angle AOB=90^o$ ----> by complementary angles in a right triangle

substitute the given value

$m\angle ABO+72^o=90^o$

$m\angle ABO=90^o-72^o=18^o$

7 0

3 years ago