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3 years ago

Describe how to round 3.987 to the nearest 10th

1 answer:

3 0

You look at the tenths place(the number behind the decimal) then you look at the the numbers behind it if the one directly behind it is more than five then you round it up one so like this would be 4.000 because u leave the number in front alone until you have figured the other things out so leave the three alone for right now the look at the nine then look at the eight it is more than five so you round the nine to ten(which would be 4) then turn everything else to zeros so the answer is 4.000 or just 4

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Pls answer with steps

AlekseyPX

Answer:

Median 32

Step-by-step explanation:

1. Arrange your numbers in numerical order

2. Count how many numbers you have

3. If you have an odd number, divide by 2 and round up to get the position of the median number

4. if you have an even number, divide by 2. Go to the number in that position and average it with the number in the next higher position to get the median

hope this helps

have a great day/night

7 0

2 years ago

What is the decibel level of the radio with intensity 10−7 watts per square inch? Use a logarithmic model to solve.

BaLLatris [955]

Answer:

$D = 50$

Step-by-step explanation:

Given

$I = 10^{-7}W/m^2$ --- Intensity

Required

Determine the decibel level (D)

This is calculated as:

$D = 10 * log(\frac{I}{I_n})$

Where:

$I_n =$ The threshold intensity

$I_n =1 * 10^{-12}W/m^2$

So, we have:

$D = 10 * log(\frac{I}{I_n})$

This gives:

$D = 10 * log(\frac{10^{-7}W/m^2}{1 * 10^{-12}W/m^2})$

$D = 10 * log(\frac{10^{-7}}{10^{-12}})$

Apply law of indices

$D = 10 * log(10^{-7--12})$

$D = 10 * log(10^{5})$

Apply law of logarithm

$loga^b = b\ log(a)$

So, we have:

$D = 10 * 5 * log(10)$

$log(10) =1$

So:

$D = 10 * 5 *1$

$D = 50$

Hence, the decibel level is 50

7 0

3 years ago

Which two expressions are equivalent

Blizzard [7]

Answer:

C because 4 times 3x is 12x, and 4 times 4x is 16x

7 0

3 years ago

A gallon of water weighs about 8.5 pounds. A container holds 412 gallons of water. How much does the water in the bucket wei

Alecsey [184]

We know that
1 gallon of water weighs about -------------> 8.5 pounds.
so
412 gallons of water (container)-------> x
x=412*8.5-----> x=3502 pounds

the answer is
the water in the bucket weigh 3502 pounds

5 0

3 years ago

Read 2 more answers

Can someone help me solve this equation? -11v-14=v-14

LenaWriter [7]

Answer:

Step-by-step explanation:

Add 14 on both sides:

-11v+0=v

So we have:

-11v=v

And there is only one number in the universe that can satisfy that and that is 0.