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mojhsa [17]
3 years ago
15

The Students' Union needs to order some pens and notebooks. How much does it cost to order 1000 pens and 2000 notebooks? $ Cost

Effective Pen Quantity 100 250 500 1000 2500 5000 Price per pen (cents) 80c 72c 66c 60c 52c 45c Notebook Quantity 100 250 500 1000 2500 5000 Price per notebook (cents) 99c 86c 80c 76c 72c 70c
Mathematics
1 answer:
NeX [460]3 years ago
6 0

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.

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Number 2 to 4 I don’t understand it.
Natalka [10]
All estimating problems make the assumption you are familar with your math facts, addition and multiplication. Since students normally memorize multiplication facts for single-digit numbers, any problem that can be simplified to single-digit numbers is easily worked.

2. You are asked to estimate 47.99 times 0.6. The problem statement suggests you do this by multiplying 50 times 0.6. That product is the same as 5 × 6, which is a math fact you have memorized. You know this because
.. 50 × 0.6 = (5 × 10) × (6 × 1/10)
.. = (5 × 6) × (10 ×1/10) . . . . . . . . . . . by the associative property of multiplication
.. = 30 × 1
.. = 30


3. You have not provided any clue as to the procedure reviewed in the lesson. Using a calculator,
.. 47.99 × 0.6 = 28.79 . . . . . . rounded to cents


4. You have to decide if knowing the price is near $30 is sufficient information, or whether you need to know it is precisely $28.79. In my opinion, knowing it is near $30 is good enough, unless I'm having to count pennies for any of several possible reasons.
5 0
3 years ago
A triangle has an area of 160 square inches. If it has a height of 10 inches, what is its base length?
inn [45]

Answer:

The answer is:

32 inches

Step-by-step explanation:

The reason to why is because a triangle's area is always length times height divided by 2. In this case we need to reverse the steps and multiply 160 by 2 to get 320. Then divide the area of 320 by 10 to get 32 inches to be the base length.

Hope you have a wonderful day :)

6 0
3 years ago
Which of the following is the solution set of -2|x| < -8
Tema [17]

Answer:

{x| x < -4\:or\: x > 4}

Step-by-step explanation:

−2|x| < −8 ↷

−2x > 8 −2x < −8

___ __ ___ ___

−2 −2 −2 −2

-4 > x OR 4 < x

Whenever you multiply\divide by a <em>negative</em>, you reverse the inequality symbol.

I am joyous to assist you anytime.

3 0
3 years ago
Common factors of 28 and 40
Nady [450]
28: 1, 2, 4, 7, 14, 28

40: 1, 2, 4, 5, 8, 10, 20, 40

The common factors are 1, 2, and 4.

You can use a factor rainbow to help you find the factors (:
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3 years ago
An object accelerates from rest at 10m/s2 for 20s. Calculate the velocity reached. ​
Nata [24]

Answer:

400 m/s

Step-by-step explanation:

u=0 m/s

t=20 s

a=20 m/s²

v=u+at

=0+20×20

=400 m/s

7 0
3 years ago
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