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viktelen [127]
3 years ago
11

I need to solve this equation: x= r-h/ y for h and then for r

Mathematics
2 answers:
ololo11 [35]3 years ago
7 0
X= r-h/y
h= xy-r/-1
r= xy+h
Romashka [77]3 years ago
3 0

Answer:

h=r-xy

r=xy+h

Step-by-step explanation:

x=\frac{r-h}{y}

Solve the equation for h

We need to get 'h' alone

x=\frac{r-h}{y}

multiply y on both sides

xy=r-h

Now add h on both sides

xy+h=r

Subtract xy from both sides

h=r-xy

Now solve the equation for 'r'

x=\frac{r-h}{y}

multiply y on both sides

xy=r-h

Now add h on both sides

xy+h=r

r=xy+h

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A color printer prints 24 pages in 9 minutes. How many minutes does it take per page?
Gnom [1K]

Answer:

it gets almost 3 pages but it gets 2 pages per minute

Step-by-step explanation:

3 0
3 years ago
3. Solve the following application of a system of linear equations.
zhuklara [117]

Answer:

Equations:

y =  14 + 9 x --- Cindy

y = 10 x --- Ruben

Solution to equation:

Time they have the same amount: 14 minutes

Number of cards they have at that time: 140 flashcards

Step-by-step explanation:

Solving (a): Variables and what they represent

The variables to use are x and y

Where x represent the minutes and y represents the number of flashcards in x minutes

Solving (b): System of linear equation

Cindy:

Existing\ Flashcards = 14

Additional = 9 per minute

Total number of flashcards (y) in x minutes is:

y =  Existing\ Flashcards + Additional * x

y =  14 + 9 * x

y =  14 + 9 x

Ruben:

Rate = 10 per minute

Total number of flashcards (y) in x minutes is:

y = Rate * x

y = 10 * x

y = 10 x

Solution to Equations:

Time they have the same amount.

To do this, we equate both expressions

i.e.

10x = 14 + 9x

Collect Like Terms

10x - 9x = 14

x = 14

Number of cards they have at that time.

Here, we simply substitute 14 for x in any of the equations.

y = 10 x

y = 10 * 14

y = 140

or

y =  14 + 9 x

y = 14 + 9 * 14

y = 14 + 126

y = 140

4 0
2 years ago
Help me with this tooo! It is the question that is not filled in
Kazeer [188]

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3 0
3 years ago
A student flips a coin 58 times. How many times can she expect the coin to land on heads.
goldenfox [79]
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5 0
2 years ago
Read 2 more answers
The Students' Union needs to order some pens and notebooks. How much does it cost to order 1000 pens and 2000 notebooks? $ Cost
NeX [460]

Answer:

Then, it costs $2120 to order 1000 pens and 2000 notebooks.

Step-by-step explanation:

The Students' Union needs to order 1000 pens and 2000 notebooks. The price per pen when buying 1000 of them is 60c. The price per notebook when buying 2000 of them is 76c.

Then the total of money needed to order 1000 pens and 2000 notebooks is:

Total Money = 1000 × 0.60 + 2000 × 0.76 = $2120

Then, it costs $2120 to order 1000 pens and 2000 notebooks.

6 0
3 years ago
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