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boyakko [2]
3 years ago
7

An HP printer costs $180, with printing costs of $0.03 per page. A Samsung printer costs $230, with printing costs of $0.01 per

page. How many pages need to be printed for the overall cost to be the same?
Mathematics
1 answer:
Softa [21]3 years ago
8 0

Answer:

2,500 pages

Step-by-step explanation:

Let

y -----> the overall cost

x -----> the number of pages

we know that

HP printer

y=0.03x+180 ------> equation A

Samsung printer

y=0.01x+230 -----> equation B

Solve the system by substitution

Substitute equation B in equation A

0.03x+180=0.01x+230

Solve for x

0.03x-0.01x=230-180\\0.02x=50\\x=2,500\ pages

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igomit [66]

3(d + 11) = 6(d + 33)

So you have: 3d + 33 = 6d + 198

which is: -3d = 165

or d = -55

So you have <em>only one answer.</em>

8 0
3 years ago
Read 2 more answers
A hose is leaking water at a rate of 2 oz/h. How many cups of water will leak out after 2 weeks?
Over [174]

Answer:

84 cups of water will leak out after 2 weeks

Step-by-step explanation:

* Lets how many how to change oz to cup

- One cup contains 8 oz

- We can use the ratio to solve this problem

- A hose is leaking water at a rate of 2 oz/h

- We need to find how many cups of water will leak out after 2 weeks

∵ The rate of the water leak out is 2 oz/hr

∵ 1 cup contains 8 oz

∴ 1 oz = \frac{1}{8} cup

∴ 2 oz = 2 × \frac{1}{8} = \frac{2}{8} = \frac{1}{4} cup

∴ The rate of the water leak out = \frac{1}{4} cup/h

∵ 1 day = 24 hours

∵ 1 week = 7 days

∴ 1 week = 7 × 24 = 168 hours

∵ The number of hours in 1 week is 168

∴ The number of hours in 2 weeks = 168 × 2 = 336 hours

⇒    cups    :    hours

⇒      \frac{1}{4}         :   1

⇒     x         :    336

- By using cross multiplication

∴ x = 336 × \frac{1}{4}

∴ x = 84

- x represents the number of cups of water leak out

<em>84 cups of water will leak out after 2 weeks</em>

5 0
3 years ago
If p = 12 and q = 3, evaluate 4p – q.
borishaifa [10]

Answer:

45

Step-by-step explanation:

Plug in the values into the equation

4(12) - 3

48 - 3 = 45

8 0
3 years ago
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Nora and Eli are making homemade spring rolls for a party. Nora can make 8 spring rolls in 10 minutes. Eli can make 10 spring ro
NemiM [27]

Answer:

Could you possible elaborate on the question more?

6 0
3 years ago
A. Find 18% more than 200<br> B. Find 18% less than 200
stellarik [79]

Answer:

A. 236

B. 164

Step-by-step explanation:

18% of 200= 36

200+36=236

200-36=164

6 0
3 years ago
Read 2 more answers
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