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trasher [3.6K]
3 years ago
5

. Estimate the sum of 405 and 385 byrounding to the nearest hundred. Explain​

Mathematics
2 answers:
mars1129 [50]3 years ago
8 0

Answer:

800

Step-by-step explanation:

Round 405 to 400

Round 385 to 400

400+400=800

inn [45]3 years ago
8 0

Answer:

800 to the nearest hundred

Step-by-step explanation:

To Estimate the sum of 405 and 385, we will add 405 together with 385 I.e 405+385 to get 790.

Rounding 790 to a hundred is 800 since the second place value in 790 which is '9' is greater than 5, we will add 1 to the first place which is 7 to give us 8. This will change the second place value to '0' which make the value of 790 to be 800 to a hundred.

Note that 1 can only be added to a preceding value of a number if the succeeding value is greater than 5.

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PilotLPTM [1.2K]

Answer:1 and 3

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multiply and add the like terms. you get 14x+11.

5 0
3 years ago
What is the parameter of interest to compare the proportions from two populations?
Marysya12 [62]
As with comparing two population proportions, when we compare two population means from independent populations, the interest is in the difference of the two means. In other words, if is the population mean from population 1 and is the population mean from population 2, then the difference is μ 1 − μ 2 .



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Hope this helps you
7 0
2 years ago
Can someone help me...
lukranit [14]

Answer:

48.3 cm^2

Step-by-step explanation:

The area of the enclosing square is that of a square 15 cm on a side, so is ...

square area = (15 cm)^2 = 225 cm^2

The white area is that of a quarter-circle of radius 15 cm, so that area is ...

quarter-circle area = (1/4)πr^2 = (π/4)·(15 cm)^2 = 56.25π cm^2 ≈ 176.7 cm^2

Then the yellow area is the difference ...

yellow area = square area - quarter-circle area

= (225 cm^2) - (176.7 cm^2)

yellow area = 48.3 cm^2

4 0
3 years ago
Cos(x)= 9/7. What does x equal?
boyakko [2]
To solve this problem, you have to simplify your answer.

You may also look online to solve your problem.

After simplifying your question,  The answer to your question is:

x=9/7.

I hope this helps.  This answer is varified.  
7 0
3 years ago
A motorboat can maintain a constant speed of 44 miles per hour relative to the water. The boat makes a trip upstream to a certai
serg [7]

Answer:

Step-by-step explanation:

Distance upstream = (34-c)(39/60) miles

--------------------------

Distance downstream = (34+c)(29/60) miles

-----------------------------------------------

Equation:

distance = rate*time

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Multiply both sides by 60 to get:

39(34-c) = 29(34+c)

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68c = 340

c = 5 mph speed of the current

4 0
3 years ago
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