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lyudmila [28]
4 years ago
3

Hannah finds purple, blue, and silver space rocks while exploring.

Mathematics
2 answers:
blagie [28]4 years ago
5 0
To answer this, you will determine what fraction of the original rocks are silver by using the information about the other two colors.

If 2/3 of them area purple, than 1/3 are not.

If 3/4 of the remaining 1/3 is blue, than 3/4 x 1/3 = 3/12 of then are blue.

2/3 are purple, 3/12 of them are blue, the remaining is silver,

1 - 2/3 - 3/12
1 - 8/12 - 3/12 = 1/12

1/12 of the rocks are silver. If 3 are silver, write an equation that needs solved.

1/12r = 3
r = 36 rocks

There were 36 space rocks in total.
xz_007 [3.2K]4 years ago
5 0

Answer:

36

Step-by-step explanation:

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3 years ago
The Wellbuilt Company produces two types of wood chippers, economy and deluxe. The deluxe model requires 3 hours to assemble and
seropon [69]

Answer:

The maximum profit is reached with 4 deluxe units and 6 economy units.

Step-by-step explanation:

This is a linear programming problem.

We have to optimize a function (maximize profits). This function is given by:

P=98D+72E

being D: number of deluxe units, and E: number of economy units.

The restrictions are:

- Assembly hours: 3D+2E\leq24

- Paint hours: 0.5D+1E\leq8

Also, both quantities have to be positive:

D\geq 0\\\\E\geq0

We can solve graphically, but we can evaluate the points (D,E) where 2 or more restrictions are saturated (we know that one of this points we will have the maximum profit)

(8;0) \rightarrow  P=98*8+72*0= 784\\\\(0;8) \rightarrow P= 98*0+72*8=576\\\\(4;6) \rightarrow P=98*4+72*6=824

The maximum profit is reached with 4 deluxe units and 6 economy units.

4 0
3 years ago
Rachel bought 15 packs of colored pencils with four pencils in each pack. She also
stealth61 [152]

Answer:

124

Step-by-step explanation:

15 x 4=60

32 x 2=64

64+60=124

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3 years ago
National Mobile - 300 texts for $9.99
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Choose the cost which has the lowest rate. If you really like to travel to other places and you need to budget, you will choose the national mobile rate. It is cheaper and 300 texts is a lot. However, if you want to travel including using your mobile texts during air transportation, you need to buy the 17.99 dollars. It’s a bit expensive but the number of texts is a lot. Divide the cost by the number of texts. For costing purposes, its smarter to choose the national mobile rate. <span> </span>
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4 years ago
How do you solve? 2/3 of 12
stealth61 [152]
To solve 2/3 of 12 we need to divide 12 by 3 which is 4 so then we need to do 4 x 2 which is 8. Hope I helped.
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3 years ago
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