What is 1457.506 correctly rounded to the hundredths place HURRY

Mathematics

1 answer:

lys-0071 [83]3 years ago

6 0

Consider the number 1457.506

We have to round it to the nearest hundredth.

Consider the digit at hundredth place which is '0'. Now, consider the digit next to the hundredth place. Since, the digit next to the hundredth place is '6' and it greater than 5. Therefore, we will add '1' to the hundredth place.

So, the number rounded to the nearest hundredth is 1457.51

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The average grain of salt is 0.0003 meters wide. Rhinovirus, which causes the common cold, is 0.00000003 meters wide. How many t

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Answer:

$1\times 10^4\ times$

Step-by-step explanation:

Given:

Width of average grain of salt is, $w=0.0003\ m$

Width of Rhinovirus is, $W=0.00000003\ m$

Now, expressing each width in scientific notation form, we get:

$w=0.0003\ m = 3\times 10^{-4}\ m\\\\W=0.00000003\ m = 3\times 10^{-8}\ m$

Now, in order to get how many times 'W' is wider than 'w', we divide the two widths. This gives,

$\frac{W}{w}=\frac{3\times 10^{-4}\ m}{3\times 10^{-8}\ m}\\\\\frac{W}{w}=1\times 10^{-4-(-8)}=1\times 10^{-4+8}=1\times 10^4\\\\\therefore W=1\times 10^4\times w$