2 years ago

Solve the equation.

Mathematics

1 answer:

amm18122 years ago

5 0

C. -7
Solve for n by simplifying both sides of the equation, then isolating the variable.

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Find a unit vector in the same direction as the given vector: v = −14.5i + 2.5 j.

Elis [28]

ANSWER

$- \frac{29}{866} \sqrt{866} i + \frac{5}{866} \sqrt{866} j$

EXPLANATION

The given vector is v = −14.5i + 2.5 j.

The magnitude of this vector is

$|v| = \sqrt{ {( - 14.5)}^{2} + {2.5}^{2} }$

$v| = \sqrt{ {( - 14.5)}^{2} + {2.5}^{2} }$

$v| = \sqrt{ 216.5} = \frac{ \sqrt{866} }{2}$

The unit vector in the direction of this vector is

$= \frac{v}{ |v| }$

$= - \frac{14.5}{ \frac{ \sqrt{866} }{2} } i + \frac{2.5}{ \frac{ \sqrt{866} }{2} } j$

$= - \frac{29}{866} \sqrt{866} i + \frac{5}{866} \sqrt{866} j$

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3 years ago

Ose has 50 coins in a jar. 20% are nickels, 40% are quarters, and the rest are pennies. (6.RP.3c-Benchmark #3)

cupoosta [38]

Answer:

Part A: 40% are pennies

Part B: NIckels 10, Quarters 20, Pennis 20

5 0

3 years ago

Read 2 more answers

Please help me and explain thank you so much I appreciate it

andreev551 [17]

Answer:

He gets 32, $10 bills.

Step-by-step explanation:

He puts in $630.

3 times $50 equals $150.

8 times $20 equals $160.

$150 plus $160 equals $310.

$630 minus $310 equals $320.

$320 divided by 10 equals 32.

So he gets 32, $10 bills.

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2 years ago

Find 3x-y-3z if x=-2, y=1, z=-2

andriy [413]

Answer:

Step-by-step explanation:

Answer is - 1 , but can't show work with smart phone. Don't own computer.

Use my head for most numbers. Sorry

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2 years ago

A person 44-ftft tall casts a shadow 1313-ftft long. at the same time, a nearby tree casts a shadow 3434-ftft long. find the

3241004551 [841]

The ratio of height : shadow =44/1313

Therefore height of the tree,x=3434*(44/1313)
=115.08 ft

If you meant 13 and 34 as the length of shadows respectively, then also x=115.08 ft

6 0

3 years ago