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andreyandreev [35.5K]
3 years ago
6

What is the answer to the picture below

Mathematics
1 answer:
KengaRu [80]3 years ago
6 0
I believe your answer is C
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35 x 2/7 <br> 14, 5, 7, 10,
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Answer:

10

Step-by-step explanation:

35 * 2/7

Rewriting

35/7 *2

5*2

10

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Dan earns $42.75 per month working as a tutor. He worked as a tutor for 4 months. He also earned $52.45 walking dogs in the neig
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Find the angle between vector u=2i+sqrt(11)j and v=-3i-2j to the nearest degree
const2013 [10]

Answer: Last option 155°

Step-by-step explanation:

We have the components of the vectors u and v.

Then, to find the angle between them, perform the following steps:

1) Calculate the scalar product u * v

If u = 2i + \sqrt{11}j  and v = -3i-2j

Then, the product scalar u * v is:

u * v = (2)(-3) + (\sqrt{11})(-2)

u * v = -6-2\sqrt{11}

u * v = -12.633

2) Calculation of the magnitude of both vectors.

| u | = \sqrt{(2) ^ 2 + (\sqrt{11})^2}\\\\| u | = \sqrt{4+11}\\\\| u | = \sqrt{15}

| v | = \sqrt{(- 3) ^ 2 + (- 2) ^ 2}\\\\| v | = \sqrt{9 +4}\\\\| v | = \sqrt{13}

3) Now that you know the product point between the two vectors and the magnitude of each, then use the following formula to find an angle

u * v = | u || v |cos(\alpha)

-12.633 = \sqrt{15}\sqrt{13}*cos(\alpha)\\\\cos(\alpha) = \frac{-12.633}{\sqrt{15}\sqrt{13}}\\\\arcos(\frac{-12.633}{\sqrt{15}\sqrt{13}}) = \alpha\\\\\alpha =155\°

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4 years ago
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A student has 3 sticks of wood that measures 15 inches, 18 inches, and 30 inches. Can the student use these sticks to make a rig
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Step-by-step explanation:

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