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Keith_Richards [23]
2 years ago
10

Find the magnitude of the vector. (-2,-7)

Mathematics
2 answers:
Vikki [24]2 years ago
4 0

Answer:

53

Step-by-step explanation:

nevsk [136]2 years ago
3 0

Answer:

\sqrt{53}

Step-by-step explanation:

\begin{pmatrix}-2&-7\end{pmatrix}\\=\sqrt{\left(-2\right)^2+\left(-7\right)^2}\\\\

Then you need to simplify:

=\sqrt{2^2+\left(-7\right)^2}\\=\sqrt{2^2+7^2}\\=\sqrt{4+7^2}\\=\sqrt{4+49}\\=\sqrt{53}

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A segment with endpoints (5,8) and (-6,8) is rotated around the origin. How long will the new segment be?
Gekata [30.6K]
The segment was only rotated, not changed. It would be the same length as the original.

To find the length, use the distance formula.

\sqrt{ {(x2 - x1)}^{2}  + ( {y2 - y1)}^{2} }
(5, 8) would be point 1.

(-6,8) would be point 2.

Plug them into the formula.

\sqrt{( { - 6 - 5)}^{2}  + ( {8 - 8)}^{2}  }
Simplify.

\sqrt{( { - 11)}^{2}  + ( {0)}^{2} }
\sqrt{121 + 0}
\sqrt{121}
Square root this answer.
\sqrt{121}  =  + or - 11
Negative distances aren't possible, so your answer is 11.

Hope this helped!

:)
5 0
3 years ago
$7.825 per hour × $32.125 hours round answer to the thousandth of a dollar???​
xenn [34]
Correct it is right u have to multipl
4 0
3 years ago
Average serving size is 500mls which is 1050kj.
astra-53 [7]

Answer:

  2625 kJ

Step-by-step explanation:

We assume the energy is proportional to the volume:

  energy/volume = 1050 kJ/(500 mL) = E/(1250 mL)

Multiply by 1250 mL:

  E = (1250/500)(1050 kJ) = 2625 kJ

The number of kJ in 1.25 L of Lemon Squash is 2625 kJ.

5 0
3 years ago
Can anyone help. Thanks
Ray Of Light [21]

Answer:

Option C

please see the attached picture for full solution

hope it helps..

Good luck on your assignment...

8 0
3 years ago
285 + 617 = ⎕ + 620 wich number goes in the blank
borishaifa [10]
285 + 617 = 902

902 - 620 = 282

Answer: 282
5 0
3 years ago
Read 2 more answers
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