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belka [17]
3 years ago
14

A farmer sells 7.7 kilograms of apples and pears.3/5 of this weight is apples, and the rest is pears. How many kilograms of pear

s did she sell at the farmers market?
Mathematics
1 answer:
kompoz [17]3 years ago
6 0

Answer:

The weight of pears is 3.08 kg

Step-by-step explanation:

A farmer sells 7.7 kilograms of apples and pears.

3/5 of this weight is apples.

This means that the weight of apples is:

3/5 of 7.7

=> \frac{3}{5} * 7.7 = 4.62kg

The weight of apples is 4.62 kg.

The weight of pears will therefore be:

7.7 - 4.62 = 3.08 kg

The weight of pears is 3.08 kg.

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Marty has read 32% of his 400-page library book. How many pages has Marty read?
vova2212 [387]

Answer:

128 pages

Step-by-step explanation:

0.32*400

=128

In total, Marty had read 128 pages of his book.

6 0
3 years ago
What is the mass of 2.5 moles of carbon dioxide?
GarryVolchara [31]

Answer:

110 grams

Step-by-step explanation:

CO2 molecule is made up of Carbon (atomic mass =12) and oxygen (atomic mass=16).

So first finding the mass of 1 molecule of CO2 which is equals to

= mass of 1 carbon atom + masses of 2 oxygen atom, we get

= 12+(16*2)= 12+32= 44 a.m.u.

Now 1 molecule of CO2 has mass 44 amu so mass of 1 mole CO2 will be 44 grams.( 1 a.m.u.=1.6729*10^-33 grams. 1 mole = 6.022*10^23, so 44 a.m.u.=73.6076*10^-33 grams approx. For one mole CO2, 73.6076*10^-33*6.022*10^23 which is approximately equals to 44 grams. )

1 mole CO2= 44grams, so 2.5 moles = 44*2.5= 110 grams

So our answer is 110 grams.

lowkey hope this helped you, good luck whatever you need it for Imaooo

3 0
2 years ago
There are 9 shipping boxes and each of these boxes has 19 shoe boxes, and each shoe box has 2 shoes. Which of the following is a
Reptile [31]
2 shoes in each box * 19 shoe boxes = 38 shoes

38 shoes * 9 shipping boxes would be 342 shoes in all

A good estimate would be around 342. Hope that helps
4 0
3 years ago
Read 2 more answers
6. Marcus sold 6 pizzas. Sue sold 4 pizzas.
mestny [16]

Answer:

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4*$10=$40

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$100

Step-by-step explanation:

5 0
2 years ago
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Can anyone help me with these 2 queen
Elan Coil [88]

Answer

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Step-by-step explanation:

4 0
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