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KatRina [158]
3 years ago
13

BRAINLIEST INCLUDED! The cost of a pair of boots was $40. They now cost $25. Determine the percent of decrease. Enter your respo

nse with an explanation of your process.
Mathematics
2 answers:
sertanlavr [38]3 years ago
7 0

Answer:

37.5 percent

Step-by-step explanation:

First, work out the difference (decrease) between the two numbers you are comparing(which is 15 in this case) . Next, divide the decrease by the original number and multiply the answer by 100.(15/40=0.375 times 100=37.5) If the answer is a negative number, this is a percentage increase

zimovet [89]3 years ago
4 0
I think the answer would be 37.5% decrease. The boots are $15 less than before so you set 15 over 40 equals x over 100. Cross multiply 40 by x and 15 by 100 to get 40x=1,500. You then divide 1,500 by 40 to get x=37.5 which is your percent decrease. I hope this helped :)
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Answer with Step-by-step explanation:

a.Let given vector

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Where x=Coefficient of i

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By using the formula

The unit vector=\hat{a}=\frac{8i-j+4k}{9}=\frac{8}{9}i-\frac{1}{9}j+\frac{4}{9}k

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\mid b\mid=\sqrt{(-2)^2+4^2+2^2}=2\sqrt 6

\hat{b}=\frac{-2i+4j+2k}{2\sqrt 6}

Length of vector=6

Therefore, the vector in the direction of <-2,4,2> with length 6 is given by =6\hat{b}=6\times \frac{-2i+4j+2k}{2\sqrt 6}

The vector in the direction of <-2,4,2> with length 6 is given by =-\sqrt 6(-i+2j+k)

c.\theta=\frac{\pi}{3}

\mid v\mid=8

Let v=v_x i+v_y j

v_x=\mid v\mid cos\theta

v_x=8cos\frac{\pi}{3}=8\times \frac{1}{2}=4

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v_y=\mid v\mid sin\theta

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Step-by-step explanation:

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The solution of the given equation is (3,6). The correct option is B.(3,6)

<h3>Given equations,</h3>

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