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Paladinen [302]

2 years ago

9

Jessica is a custodian at Oracle Arena. She waxes 20 \text{ m}^220 m 2 20, start text, space, m, end text, squared of the floor

in \dfrac35 5 3 start fraction, 3, divided by, 5, end fraction of an hour. Jessica waxes the floor at a constant rate. At this rate, how many square meters can she wax per hour?

2 answers:

shepuryov [24]2 years ago

8 0

You can write the proportion

$20\div \dfrac{3}{5}=x\div 1$

In fact, if she waxes the floor at a constant rate, the amount of floor waxed and the time spent will be proportional.

Solving for x, we have

$\dfrac{3}{5}x=20 \iff x=20\cdot\dfrac{5}{3}=\dfrac{100}{3}$

brilliants [131]2 years ago

8 0

Answer:

100/3 for Khan.

Step-by-step explanation:

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4 over 7 divided by 13 over 28

Galina-37 [17]

Answer:

16/13

Step-by-step explanation:

Use a calculator lol

Can I have brainliest please

5 0

2 years ago

Read 2 more answers

A polynomial p has zeros when I = 0.2 = -

Rainbow [258]

Answer:

p(x) = (5x - 1) (x + 3)

Step-by-step explanation:

I apologize if I couldn't answer correctly, the question was a bit hard to understand because of the formatting.

Also I didn't see my answer in the list of answer choices but here it is:

if the polynomial has zeros at 0.2 and -3 the equation would have to be:

p(x)=(x-0.2)(x+3)

This is because plugging either of those numbers into the polynomial would cause it to equal 0.

(x-0.2) can be simplified by multiplying everything in the parenthesis by 5, getting rid of all of the decimals, making the final answer:

p(x) = (5x - 1) (x + 3)

5 0

2 years ago

Simplify.Your answer should contain only positive exponents.

zhannawk [14.2K]

Step-by-step explanation:

1) $r^3r^3$

$\mathrm{Apply\:exponent\:rule}:\quad \:a^b\cdot \:a^c=a^{b+c}$

$=r^{3+3}$

$=r^6$

2) $3k^3k^3$

$\mathrm{Apply\:exponent\:rule}:\quad \:a^b\cdot \:a^c=a^{b+c}$

$=3k^{3+3}$

$=3k^6$

3) $\left(3b^2\right)^3$

$\mathrm{Apply\:exponent\:rule}:\quad \left(a\cdot \:b\right)^n=a^nb^n$

$=3^3\left(b^2\right)^3$

$=27\left(b^2\right)^3$

$=27b^6$

4) $\left(2m^3\right)^3$

$\mathrm{Apply\:exponent\:rule}:\quad \left(a\cdot \:b\right)^n=a^nb^n$

$=2^3\left(m^3\right)^3$

$=8\left(m^3\right)^3$

$=8m^{3\cdot \:3}$

$=8m^9$

5) $\frac{3r^3}{r^2}$

$\mathrm{Apply\:exponent\:rule}:\quad \frac{x^a}{x^b}=x^{a-b}$

$=3r^{3-2}$

$=3r^1$

$=3r$

3 0

2 years ago

What is the equation in slope-intercept form of a line that is parallel to y=−2x+5 and passes through the point (4, 0)?

katrin [286]

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2 years ago

You are given a formula and told that it is a formula for the area of a quadrilateral. can you tell whether it is the formula fo

AleksAgata [21]

The area for a rectangle is length × width.
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Hope this helps^^ :)

7 0

3 years ago