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musickatia [10]
3 years ago
9

Marie pays $2.50 for 5 pecils. Use the drop down menu to explain how to determine and use constant of proportionality, in dollar

s per pencil, that relates these values
Mathematics
1 answer:
stiks02 [169]3 years ago
5 0

Answer:

$0.5

Step-by-step explanation:

Given data

Cost of 5 pencils= $2.50

Required

The cost per pencil

The cost per pencil is

Cost of 5 pencils divided by 5

=2.5/5

=$0.5

This is the constant of proportionality

For any number of pencils x

The cost is

Cost =0.5x

Hence the cost of one pencil is $0.5

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Jenny bought 3 CDs that were each the same price. Including sales tax, she paid a total of $45.30 Of that total, $1.50 was tax.
enot [183]

Answer:

$13.6

Step-by-step explanation:

Jane bought 3 CDs that were each the same price. So let the price of each CD be ‘x’.

It is given that including sales tax, she paid a total of $45.30.

Also each CD had a tax of $1.50. We need to find out what the price of each CD was before tax.

Since the tax for all 3 CDs was same, the total amount of tax that she paid was:

3 * 1.50 = 4.50

Therefore the total tax on 3 CDs is $4.50

Since we already know the total price she paid for the CDs including taxes, we can find the price of each CD by the following way:

3x + 4.50 = 45.30

3x = 45.30 - 4.50

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x = 13.6

Therefore the price of each CD before tax is $13.6.

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3 years ago
the cost of plastering a wall of a room having length 8m and heights 4m at 4s 15 per m² is rs 1560 . find the cost of carpeting
Virty [35]

Answer:

Here,

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4s = 15 per m^2

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4 0
3 years ago
A company makes a profit of $50 per software program and $35 per video game. The company can produce at most 200 software progra
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Answer:

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software- 200 = $10,000      video-225 = $7,875

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200x + 225y = $17,875

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What do I need to know to ace my test on basic constructions for geometry
ASHA 777 [7]

Answer:

Its important to ask your teacher this alot  of tests are different.  But just study the general idea of what you've learned so far.  

step-by-step explanation:

7 0
3 years ago
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