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3 years ago

Simplify the expression -6(10+9v)

Mathematics

1 answer:

lilavasa [31]3 years ago

6 0

Answer:

-60 - 54v or -60 + (-54v)

Step-by-step explanation:

If you choose to expand this equation to make it easier, you can write it out as (-6 × 10) + (-6 × 9v). With this, you can simplify this to -60 + (-54v).

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3 years ago

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Two men p and q set off from a base camp r prospecting for o,p moves 40km on a bearing 205 degree and q moves 30km on a bearing

Mkey [24]

Answer:

(a) By cosine rule, /PQ/2=202+152−2×20×15×cos145°

= 400+225−600cos145°

= 625+600×0.8192

= 491.52+625

/PQ/2=1116.52⟹/PQ/=1116.52−−−−−−√=33.41

≊33km ( to the nearest whole number)

(b) By sine rule,

sin<QPR15=sin14533.41

sin<QPR=15sin14533.41

sin<QPR=15×0.573633.41=0.2575

<QPR=14.92°

∴ Bearing of Q from P = 25° + 14.92° = 39.92°.

≊40° (to nearest whole number)

Step-by-step explanation:

hope it helps

...

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3 years ago

What is the solution to this system of equations -3x+5y=-2<br> 3x+7y=26

andrew11 [14]

Answer: -3x+5y=-2 = x=5/3y+2/3

3x+7y=26 = x=-7/3y+26/3

Step-by-step explanation:

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Sladkaya [172]

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Licemer1 [7]

Answer:

Step-by-step explanation:

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