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3 years ago

What is the product of -2/7 and -3/7

Mathematics

2 answers:

Hitman42 [59]3 years ago

3 0

Answer:

6/49 is the answer of this question

kotykmax [81]3 years ago

3 0

Answer:

<h2>here is your answer mate</h2>

Step-by-step explanation:

<h2>mark me as a brainlist</h2>

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Round 223 to the nearest ten

Aleks [24]

I believe the answer is 220?

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3 years ago

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how many different three digit numbers can be formed using the digits 9 3 4 7 and 6 assume the number can be used more than once

SOVA2 [1]

Answer:

Step-by-step explanation:

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2 years ago

Stacy is attending music festival the tickets for the festival cost $87.96. Staci plans to purchase $30 T-shirts from the event

vfiekz [6]

She can purchase around 3 T-shirts because out of the $200, the ticket is $87.96 which leaves us left with $112.04. Each T-shirt is 30$. You just divide $112.04 by $30.

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3 years ago

It takes machine A x hours to manufacture a deck of cards that machine B can manufacture in y hours. If machine A operates alone

nlexa [21]

Answer:

The expression that shows how long the two machines will operate simultaneously is:

$\frac{y(100x-z)}{x+y}$

Step-by-step explanation:

We know that:

x: hours to manufacture a deck of cards for machine A

y: hours to manufacture a deck of cards for machine B

z: hours that machine A operates alone

The number of decks manufactured only by machine A is:

$\frac{z}{x}$

So, the remaining decks are given by:

$100-\frac{z}{x}=\frac{100x-z}{x}$

Then, the combined rate of machines A and B would be:

$\frac{1}{x} +\frac{1}{y} =\frac{x+y}{xy}$

The work-rate formula is:

$Amount= Rate \times Time$

Hence, the time that the two machines work simultaneously is:

$Time=\frac{Amount}{Rate}$

$Time=\frac{Amount}{Rate} =\frac{\frac{100x-z}{x} }{\frac{x+y}{xy} } ={\frac{100x-z}{x} \times \frac{xy}{x+y}=\frac{y(100x-z)}{x+y}$

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3 years ago

Which of the following is a proportion?

puteri [66]

Answer:

the second one

Step-by-step explanation:

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3 years ago