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kykrilka [37]
3 years ago
9

Lenny bought 1.4 pounds of rice t

Mathematics
1 answer:
Alona [7]3 years ago
6 0
K so u would divide 1.4 and 0.40. Since the divisor has a decimal point, we would have to move it one time to the right. And u would do it for the divided also, move the decimal one time and u should get 14 divided by 4.0. And just do the math but when u get a remainder and u only have 2 numbers for the quotient, you would put a place holder which is zero. U need to add that zero because it is asking u how much it is and we are dealing with money so after that, u should get $0.28. And don't worry about the remainder that u get after that.
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A boat heads north across a river at a rate of 2 miles per hour. If the current is flow A boat heads north across a river at a r
Ivahew [28]

Answer:

\textrm{Resultant velocity}\ =\ \sqrt{29}\ miles/hour

along the direction 68.19° from north.

Step-by-step explanation:

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Since, north and east are perpendicular to each other, so we can write the resultant velocity in vector form as,

\vec{r}\ =\ 2\hat{i}+5\hat{j}

Hence, the magnitude of resultant velocity can be written as

r\ =\ \sqrt{2^2+5^2}

  =\ \sqrt{4+25}

  =\ \sqrt{29}

Hence, the magnitude of resultant vector is \sqrt{29} moles/hour.

And the direction of the boat can be given by,

tan\theta\ =\ \dfrac{5}{2}

=>\ tan\theta\ =\ 2.5

=>\ \theta\ =\ tan^{-1}2.5

                 = 68.19°

Hence, the resultant velocity of boat is \sqrt{29} miles/hour along the direction making an angle 68.19° with the north.

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