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3 years ago

What is 1,864.29 rounded to the nearest one

Mathematics

2 answers:

4vir4ik [10]3 years ago

8 0

1864 is the answer for your question

Alisiya [41]3 years ago

5 0

1,864.29 rounded to the nearest one will be 1,864

Explinaton:
1=thousands place
8=hundreds place
6=tens place
4=ones place
.
2=tenths place
9=hundreths place

So to round to the nearest one you need to look at the 2 and since the rule is:
0,1,2,3,4 stays the same
5,6,7,8,9 moves one up

Since the number 2 says to stay the same your new number will be 1,864.

Please mark brainliest

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A 25% acid solution must be added to a 40% solution to get 240 liters of 30% acid solution. How many of each should be used ?

schepotkina [342]

Answer:

The number of liters of 25% acid solution = x = 160 liters

The number of liters of 40% acid solution = y = 80 liters

Step-by-step explanation:

Let us represent:

The number of liters of 25% acid solution = x

The number of liters of 40% acid solution = y

Our system of Equations =

x + y = 240 liters....... Equation 1

x = 240 - y

A 25% acid solution must be added to a 40% solution to get 240 liters of 30% acid solution.

25% × x + 40% × y = 240 liters × 30%

0.25x+ 0.4y = 72...... Equation 2

We substitute 240 - y for x in Equation 2

0.25(240 - y)+ 0.4y = 72

60 - 0.25y + 0.4y = 72

Collect like terms

- 0.25y + 0.4y = 72 - 60

0.15y = 12

y = 12/0.15

y = 80 Liters

Solving for x

x = 240 - y

x = 240 liters - 80 Liters

x = 160 liters

Therefore,

The number of liters of 25% acid solution = x = 160 liters

The number of liters of 40% acid solution = y = 80 liters

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