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2 years ago

PLEASE HELP PLEASE PLEASE DUE TONIGHT I HAVE NO IDEA HOW TO DO THIS

Mathematics

1 answer:

Dmitry_Shevchenko [17]2 years ago

4 0

Answer:

I feel bad for you I really would like to help you but I haven't even learn that stuff yet

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PLZZ HELP ME...I AM FAILING THIS CLASS...WILL GIVE BRAINLIEST..THANKYOU SO MUCH!!

alex41 [277]

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2 years ago

Read 2 more answers

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:

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

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

3 0

3 years ago

What is 12+5x=2x-9 step by step

Alja [10]

Answer:

x = -7

How to:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation

5°x-(2°x-9)=0

Pull out like factors:

21 + 3x = 3 • (x + 7)

Equations which are never true: Solve 3 = 0

Solving a Single Variable Equation:

Solve : x+7 = 0

Subtract 7 from both sides of the equation : x = -7

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2 years ago

What is 0.25:0.5 and 1:1/4 in their simplest form?

Verdich [7]

Answer:

0.25:0.5 is 1:2

1:1/4 is 4:1

5 0

3 years ago

What is the general form of the equation for the given circle centered at O(0, 0)?

Vesna [10]

hello :
an equation of the circle Center at the O(a,b) and ridus : r is :
(x-a)² +(y-b)² = r²
in this exercice : a =0 and b = 0 (Center at the origin)
r = AO
r² = (AO)²
r² = (4-0)² +(5-0)² = 16+25=41
an equation of the circle that satisfies the stated conditions.
Center at the origin, passing through B(4, 5) is : x² +y² = 41

x² +y² - 41=0

8 0

2 years ago