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lyudmila [28]
3 years ago
6

Find the point-slope equation for

Mathematics
1 answer:
Igoryamba3 years ago
4 0

Answer:

y+(21)=-4(x-7)

Step-by-step explanation:

the point slope equation , two point

m=y2-y1/x2-x1

m=23+21/-4-7=44/-11= -4

y+(21)=-4(x-7)

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A company has 300 items to post, they have packages and
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Answer:

£162.35.

Step-by-step explanation:

Total of letters + packages = 300.

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So number of letters = 300 - 64 = 236.

No. of first class letters = 236 * 1/4 = 59.

No. of 2nd class letters = 236 - 59 = 177.

Total cost

=  64*1.2 + 0.52*59 + 0.31*177

= 162.35.

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