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tensa zangetsu [6.8K]

3 years ago

10

HELPPPPP PLEASE!!

1 answer:

agasfer [191]3 years ago

7 0

The answer is D.
To solve it, you have to add the fractions.
1) Since it is in mixed numbers, you have to turn the fractions to improper.
   2 1/2 + 1 1/4 = 5/2 + 5/4

2) Next find the lowest common multiples of the denominators( 2 and 4)
2: 2, <u>4
</u> 4: <u>4
</u>
3) Solve
<u> 5</u> x 2
2 x 2 = 10/4  10/4 + 5/4 = 15/4 <--make sure you only add the nominators after you find the common multiples.

4) Turn into a proper fraction
15/4 = 3 3/4

There are 3 3/4 gallons of paint all together. Therefore, answer D is correct.

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A fluid moves through a tube of length 1 meter and radius r=0.006±0.00025 meters under a pressure p=4⋅105±2000 pascals, at a rat

iris [78.8K]

Answer:

Maximum error for viscosity is 17.14%

Step-by-step explanation:

We know that everything is changing with respect to the time, "r" is changing with respect to the time, and also "p" just "v" will not change with the time according to the information given, so we can find the implicit derivative with respect to the time, and since

$n = (\frac{\pi}{8}) (\frac{pr^4}{v})\\$

The implicit derivative with respect to the time would be

$\frac{dn}{dt} = \frac{\pi}{8} ( \frac{r^4}{v} \frac{dp}{dt} + \frac{4pr^3}{v}\frac{dr}{dt} )$

If we multiply everything by dt we get

$dn = \frac{\pi}{8} ( \frac{r^4}{v} dp + \frac{4pr^3}{v} dr})$

Remember that the error is given by $\frac{dn}{n}$ therefore doing some algebra we get that

$\frac{dn}{n} = 4 \frac{dr}{r} + \frac{dp}{p}$

Since, r = 0.006 , dr = 0.00025 , p = 4*105 , dp = 2000 we get that

$\frac{dn}{n} = 0.1714$

Which means that the maximum error for viscosity is 17.14%.

5 0

3 years ago

Almost done. I need help with this part

valentina_108 [34]

Answer:

$\%Percent = 14.3\%$

Step-by-step explanation:

Required

15 is what percentage of 105

To do this, simply divide 15 by 105 multiplied by 100%.

So, we have:

$\%Percent = \frac{15}{105} * 100\%$

$\%Percent = \frac{15*100}{105}\%$

$\%Percent = \frac{1500}{105}\%$

$\%Percent = 14.3\%$ --- approximated

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MaRussiya [10]

Answer:

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Step-by-step explanation:

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The answer is y-7=-2/3(x+1)

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3 years ago

Justin was looking for a birthday card for his sister. There were 9 funny cards, 7 serious cards, and 5 musical cards. How many

madam [21]

Just add. 7 + 9 + 5 = 21 So the answer is A.21

5 0

3 years ago

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