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3 years ago

10

Paco orders an ice cream for $1, but realizes his wallet is at home and he only has of $1 with him. If his mom pays the remainin

g of the dollar, how much will she pay?

1 answer:

egoroff_w [7]3 years ago

4 0

If his mom pays with tax i think it's $1.07
If he pays with the dollar she pays .7 cents for tax.

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Vicky jogged 2 miles in 2 hour. What was her average rate of speed in miles per hour?

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Answer:

24

Step-by-step explanation:

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A teacher recorded the number of days her students went on vacation. Which statements describe the data? Select all that apply.

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Answer:

The students went on vacation for average 40 days.

The high school students went for more days than college students.

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3 years ago

In Circle O, centrally angle AOB measures π/3 radians.What is the length of arc AB?

Oksanka [162]

Answer:

$s=r*\pi /3$

Step-by-step explanation:

The length of any arc is calculated using the following equation:

s = r*θ

Where s is the length of the arc, r is the radius of the circle and θ is the angle in radians.

So, if we have a Circle O and a centrally angle AOB that measures π/3 radians, the value of the length of arc AB is calculated as:

$s=r*\pi /3$

Where r is the radius of the circle O.

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3 years ago

A closed can, in a shape of a circular, is to contain 500cm^3 of liquid when full. The cylinder, radius r cm and height h cm, is

Gemiola [76]

To express the height as a function of the volume and the radius, we are going to use the volume formula for a cylinder: $V= \pi r^2h$
where
$V$ is the volume
$r$ is the radius
$h$ is the height

We know for our problem that the cylindrical can is to contain 500cm^3 when full, so the volume of our cylinder is 500cm^3. In other words: $V=500cm^3$ . We also know that the radius is r cm and height is h cm, so $r=rcm$ and $h=hcm$ . Lets replace the values in our formula:
$V= \pi r^2h$
$500cm^3= \pi (rcm^2)(hcm)$
$500cm^3=h \pi r^2cm^3$
$h= \frac{500cm^3}{ \pi r^2cm^3}$
$h= \frac{500}{ \pi r^2}$

Next, we are going to use the formula for the area of a cylinder: $A=2 \pi rh+2 \pi r^2$
where
$A$ is the area
$r$ is the radius
$h$ is the height

We know from our previous calculation that $h= \frac{500}{ \pi r^2}$ , so lets replace that value in our area formula:
$A=2 \pi rh+2 \pi r^2$
$A=2 \pi r(\frac{500}{ \pi r^2})+2 \pi r^2$
$A= \frac{1000}{r} +2 \pi r^2$
By the commutative property of addition, we can conclude that:
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3 years ago

How do solve p+5=-2 with steps

Basile [38]

P+5= -2

p= -7 ( I subtracted 5 to both sides of the equation)

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