2 years ago

AB= 6 cm, AC = 12 cm Calculate the length of CD. Give your answer to 3 significant figures.

Mathematics

1 answer:

djverab [1.8K]2 years ago

4 0

CB is 10.392...

(root 12^2 - 6^2 = 6root3)

CB is now the opposite

CD = hypotenuse

Hypotenuse + opposite = SOH - sin

Sin55 = o/h

sin55 = 6root3/h

x h, then ÷ sin55

H = 6root3/sin55

H = 12.686...

To 3 s.f CD is 12.7cm

(root = square root)

Hope this helps!

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PLZ HELP ME Solve -2z – 5 > 3 for z.

Evgen [1.6K]

Answer:

z<-4

Step-by-step explanation:

-2z-5>3

Add 5 to both sides.

-2z>8

Divide both sides by -2.

Z<-4

The sign must change because you are dividing by a negative.

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3 years ago

Solve the differential equation.<br><br> (y^2 + xy^2)y' = 1

stira [4]

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