2 years ago

Whats -4 (x - 5) = 40

Mathematics

1 answer:

Stels [109]2 years ago

7 0

Answer:

x=-5

Step-by-step explanation:

-4(x-5)=40

-4x+20=40

-4x=40-20

x=20/-4

x=-5

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Need help! Law of cosines...find b round to the nearest tenth please

dusya [7]

ANSWER

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EXPLANATION

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From the diagram,

a=17, b=8, c=16

We substitute the given values into the formula to obtain:

${8}^{2} = {17}^{2} + {16}^{2} - 2(17)(16)\cos(B)$

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$64 = 545- 544\cos(B)$

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3 years ago

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I don't quite understand this..

weqwewe [10]

There it is in the image. Hope it helps. You don't need the negative y- axis.