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Eddi Din [679]
3 years ago
8

How estimation helps you to place the decimal point when multiplying 3.9x5.3

Mathematics
2 answers:
LiRa [457]3 years ago
6 0
3.9 is nearly 4 and 5.3 is just over 5 so the answer will be in the region of 15 or thinking about the decimal point there will be a tens and unit answer followed by a decimal point
myrzilka [38]3 years ago
3 0
3.9 can be rounded to 4.
5.3 can be rounded to 5.

4 x 5 = 20

That tells you that 3.9 x 5.3 has a digit in the tens place.

Then you can proceed to multiply 39 and 53, which equals 2067.
(Note: I removed the decimals on purpose)

Now we know that in 2067, the 2 should be in the tens place. That means 0 is in the ones place and that 6 is in the tenths place. That leaves 7 to be in the hundreths place.

Therefore, 3.9 x 5.3 = 20.67
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As an estimation we are told £3 is €4.
Andru [333]
<h2>Greetings!</h2>

Answer:

€16.40

Step-by-step explanation:

First, we need to divide £12.30 by 3 to find out how many groups of 3 there is:

12.3 ÷ 3 = 4.1

Now we can multiply this by 4 to find the euro equivalent:

4.1 * 4 = 16.4

So £12.30 is €16.40


<h2>Hope this helps!</h2>
6 0
4 years ago
Which values of x will make the expression
ipn [44]

Answer:

3 and -3

Step-by-step explanation:

5 0
2 years ago
Can somebody explain this please
Naddika [18.5K]
In this circle we have major arc RQ which is the really big one measuring 40x, and we have minor arc RQ, which is what we are looking for.  Minor arc RQ is double the measure of the angle that intercepts it.  That means that minor arc RQ is 2(12x-12), which is 24x - 24.  The measure of the outside of any circle will always and forever be 360 degrees;  therefore, 40x + 24x - 24 = 360.  Combining like terms gives us 64x = 384 and x = 6.  Now sub in that 6 for the x in the angle 12x - 12 to get that that angle measures 12(6)-12 = 60.  Again, the angle is half the measure of the arc it intercepts, so minor arc RQ is 120 degrees, third choice down.
4 0
3 years ago
When Harry returned from a business meeting in Ho Chi Minh City, Vietnam, his wife asked him what he thought of the Vietnamese p
goldfiish [28.3K]
<span>Harry's reply BEST qualifies as an example of <span>ethnocentrism. Although the answer is not in the choices, this is the correct answer because based from Harry’s reply </span>he evaluated other cultures according to preconceptions originating in the standards and customs of one's own culture. </span>

I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

4 0
3 years ago
Please please please please please help me I really need this
sashaice [31]

Answer:

10x² + -18

Step-by-step explanation:

g(f(x)) means you substitute 2x²-5 for every occurrance of x in g(x).

g(f(x)) = 5(2x²-5) + 7 = 10x² - 25 + 7 = 10x² - 18 =  10x² + -18

6 0
3 years ago
Read 2 more answers
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