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slamgirl [31]
3 years ago
12

1 point

Mathematics
1 answer:
Sonbull [250]3 years ago
8 0

Answer:

For the first one, the answer is 20.82

Step-by-step explanation:

you first add 2.65 to 2.56 and then add 5.9 to 5.9 and you add them together and you get 16.92 and then you subtract it from 37.74

also for the second one I don't understand. could you be a little more clear?

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3 divided by what equals -8.16
antiseptic1488 [7]
-2.72
Hope that helped
Do you know criminal minds?
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3 years ago
Write the vector v in the form aiplusbj​, given its magnitude left norm Bold v right norm and the angle alpha it makes with the
photoshop1234 [79]

Answer:

6\sqrt{3}i-6j

Step-by-step explanation:

Given:

The magnitude, v=12

The angle \alpha it makes with the positive​ x-axis =150^0

Now for a vector (x,y)

  • \alpha =tan^{-1}(\frac{y}{x} ) ; and
  • v=\sqrt{x^2+y^2}

Therefore:

150 =tan^{-1}(\frac{y}{x} )\\\frac{y}{x} =tan 150\\\frac{y}{x}=-\frac{\sqrt{3} }{3}

y=-\frac{x \sqrt{3}}{3}

Similarly:

v=\sqrt{x^2+y^2}\\12=\sqrt{x^2+y^2}\\12^2=x^2+y^2\\144=x^2+y^2

144=x^2+(-\frac{x \sqrt{3}}{3} )^2\\144=x^2+\frac{3x^2}{9} \\144=\frac{4x^2}{3}\\4x^2=144 X 3=432\\x^2=108\\x=6\sqrt{3}

Recall that:

y=-\frac{x \sqrt{3}}{3}\\y=-\frac{6\sqrt{3}  \sqrt{3}}{3}=-6

Therefore: (x,y)=(6\sqrt{3}, -6)

The vector in the form ai+bj is therefore:

6\sqrt{3}i-6j

6 0
3 years ago
The clerk at the checkout counter earned $350 in 25 hours.
REY [17]

Answer: 14 a hour

Step-by-step explanation:

3 0
3 years ago
Jason is playing a trivia game with his friends. At the end of each round, his score updates to the square of 1 less than the pr
mezya [45]

Answer:

8+n^2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What are the odds u multiply incorrect numbers and get it right
zheka24 [161]

Answer:

Very little.

Step-by-step explanation:

If you have 1x1=1, and change a number, there is no way that you will get the answer right to be 1.

4 0
3 years ago
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