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3 years ago

Barbara babysat for 3 1/4 hours and earned $19.50. What was her hourly rate?

Mathematics

1 answer:

SIZIF [17.4K]3 years ago

6 0

Barbara’s hourly rate is six dollars an hour

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A contractor has been hired to install flooring for a bandstand in the shape of a circle that is 21 feet across. How many square

SOVA2 [1]

Answer:

A. 346.19 square feet.

Step-by-step explanation:

We have been given that a contractor has been hired to install flooring for a bandstand in the shape of a circle that is 21 feet across.

To find the square feet of flooring required, we will find area of circle.

Since the length across the circle is 21 feet, so radius of circle will be half of 21 feet.

$\text{Radius}=\frac{\text{21 feet}}{2}$

$\text{Radius}=\text{10.5 feet}$

$\text{Area of circle}=\pi r^2$

$\text{Area of circle}=\pi (\text{10.5 feet})^2$

$\text{Area of circle}=3.14*110.25\text{ feet}^2$

$\text{Area of circle}=346.185\text{ feet}^2$

$\text{Area of circle}\approx 346.19\text{ feet}^2$

Therefore, 346.19 square feet of flooring will be required.

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4 years ago

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PLEASE HELP NEED ASAP. I BEG PLZZZZZZZ

seropon [69]

Answer:

Triangular prism

Hope this helps!

8 0

3 years ago

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What is an expression equivalent to m^238/m^-79 in the form m^v, where v is an integer?

umka21 [38]

Answer:

$m^{317}$

Step-by-step explanation:

In indices, the division postulate is true:

$\frac{a^m}{a^n} = a^{m-n}$

Apply this to the question:

$\frac{m^{238}}{m^{-79}} \\= m^{238-(-79)}\\= m ^{238+79}\\= m^{317}$

Hence the expression expressed in the form $m^v \ is \ m^{317}$

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4 years ago

Divide the given polynomial by the given monomial.

Ostrovityanka [42]

Answer:

Looks like all of your questions have been answered.

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3 years ago

42 = -48 + 3r<br> This is some random stuff the teacher didn’t teach us about

Anna007 [38]

Answer:

$42 = - 48 + 3r$

add 48 to either sides:

$42 + 48 = ( - 48 + 3r) + 48 \\ 90 = 3r \\3r = 90$

divide all sides by 3:

$\frac{3r}{3} = \frac{90}{3} \\ \\ { \boxed{ \boxed{r = 30}}}$

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3 years ago

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