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Illusion [34]
3 years ago
14

What is the best estimate for the product of 279 and 7

Mathematics
1 answer:
shutvik [7]3 years ago
4 0

Answer:

279 × 7 ≈ 2800

Step-by-step explanation:

if you have to round to the tens place, then both would be rounded up, the 7 to 10 and the 279 to 280. 10 × 280 = 2800

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A book which cost $300.00 was sold<br> For $240.00. What was the loss<br> percentage
Svetach [21]
Loss % = loss/C.P.*100
= 60/300*100
= 60/3
= 20% loss
3 0
3 years ago
You plant a tree that is 36 inches tall. After one year, the tree is 4343 inches tall. Which expression describes the percent of
Lera25 [3.4K]
Let x represent the percent of increase in the tree's height and let n represent the number of years.

x= n (36/4343)

Hope this helps!
3 0
3 years ago
Samantha had 500 jars of slime 30% green 25% clear and 15% purple the rest of the jars of slime were blue how many jars were blu
natima [27]

Answer:

150

Step-by-step explanation:

100% represents 500 jars

Subtract the sum of the percentage of other jars  for percent of blue jars

100 - (30 + 25 + 15) = 100 - 70 = 30%

That is 30% of the jars are blue

Calculate 30% of 500 to obtain number of blue jars

30% = \frac{30}{100} = 0.3, hence

number of blue jars = 0. 3 × 500 = 150


8 0
3 years ago
Simplify the expression. Show your work.<br><br><img src="https://tex.z-dn.net/?f=-3%284a-5b%29" id="TexFormula1" title="-3(4a-5
neonofarm [45]

Step-by-step explanation:

-3 (4a-5b)

=-3×4a -(-3×5b)

=-12a+15b

5 0
4 years ago
For a science experiment Marcia dissolved 1.0 kilogram of salt in 3.0 liters of water. For a different experiment,bobby dissolve
Vesnalui [34]
Marcia dissolved 1 kg of salt in 3 litres of water
Bobby dissolved 2 pounds of salt in 7 pints of water
We know that
1 litre = 2.11 pints
We also know that
1 pound = 0.4535 kg
Now if we take the case of Bobby, and convert the pound to kg then
1 pound = 0.4535 kg
2 pounds = (0.4535 * 2) kg
 <span>                 = 0.907 kg</span> <span>               
                 = 0.91 kg</span>
Bobby dissolved the salt in 7 pints of water
We know
2.11 pints = 1 litre
Then
7 pints = (7/2.11) litre
 <span>            = 3.32 litres</span>
So we now see that Bobby has dissolved 0.91 kg of salt in 3.32 litres of water
Marcia dissolved 1 kg of salt in 3 litres of water.
So Marcia has made a more concentrated solution since she has dissolved more salt in less amount of water whereas Bobby has dissolved less amount of salt in more water.



7 0
3 years ago
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