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Lorico [155]
3 years ago
11

Determine the density in g/cm3 of a mineral that has a volume of 3.8 cm3 and a mass of 22.4 g.

Mathematics
1 answer:
kherson [118]3 years ago
4 0

Answer:

5.89 g/cm³

Step-by-step explanation:

givens,

Mass = 22.4 g

volume = 3.8 cm³

Density = mass / volume

= 22.4 / 3.8

= 5.89 g/cm³

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She sold 60% of her cookies.
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2) In 1000 sq. meter of land a farmer cultivated 765 kg of rice with the wastage of 23.5%. I) Find the weight of the wastage. II
LiRa [457]

Answer:

Weight of wastage=179.775kg

weight of rice cultivated= 585.225 kg

percentage of rice cultivated=76.5%

Step-by-step explanation:

Area of land=100 square meters

Cultivated rice=765kg

Wastage=23.5%

1) Weight of the wastage=23.5% of 765kg

=23.5/100 × 765

=17977.5 / 100

=179.775 kg

2) Weight and percentage of rice cultivated.

weight of rice cultivated = 765 kg - 179. 775 kg

= 585.225 kg

percentage of rice cultivated = 100 - 23.5

= 76.5%

3) if area is increased 40 times in size

New area=1000 square meters × 40

=40,000 square meters

Cultivated rice= 765kg × 40

=30,600 kg

Cultivated rice excluding wastage=585.225 kg × 40

=23,409 kg

8 0
3 years ago
elliot rides his bike at an average speed of 14 miles per hours. how many miles will he ride in 2 1/2 hours
natita [175]
14:1
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14:1
x     x
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35 : 2/12          35 miles Put me as BRAINLIEST!!!!
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Graph a line with a slope of 3/4<br> that contains the point (2, -3)
natita [175]

Step-by-step explanation:

\frac{y}{x} =\frac{rise}{run} \\\frac{-3}{2} + \frac{3}{4} =\frac{0}{6} =(6,0)=(2,-3)

7 0
3 years ago
At the county fair, 4 employees were paid $8.75 an hour to work a funnel cake stand. The worked for 8 hours at regular pay and t
makvit [3.9K]

Answer:

126.25

Step-by-step explanation:

take 8.75 and multiply by 8 =70

take 8.75+2.50=11.25

11.25x5=56.25

56.25+70=126.25

8 0
3 years ago
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