4 years ago

Pleaseeeeeeeeeeeee help me!!!!!

Mathematics

1 answer:

Aneli [31]4 years ago

4 0

Answer is 150/x see photo for solution

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One half of your CDs are scratched. One fifth will not play properly. You have 40 CDs. How many will not work play properly

kvasek [131]

1/2 of 40= 20

40/5=8

20+8=28

28 of your CDs will not work properly.

I hope this helps!

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3 years ago

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What is 7/4 as a mixed number?

Nimfa-mama [501]

1 3/4 because you have but how many times 4 goes into 7. Then use the difference as the numerator and use 4 as the bottom

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4 years ago

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20 - 4b/8= 18<br><br> another one :)

Crazy boy [7]

multiply by 8 on both sides

(20)8 - 8(4b/8) = (18)8

160 - 4b = 144

subtract 160 on both sides

160 - 160 - 4b = 144 - 160

-4b = -16

divide by -4 on both sides

-4b/-4 = -16/-4

b = 4

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3 years ago

A polyhedron has two parallel hexagon bases, each with an area of 18 square meters. Find the volume of the polyhedron if its hei

MaRussiya [10]

14.72 is the answer i got

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3 years ago

Angle bisectors AX and of triangle ABC meet at point I. Find angle C in degrees, if AIB = 109.

UkoKoshka [18]

Answer:

angle C = 38 degrees

Step-by-step explanation:

Refer to attached figure (sorry, forgot to attach earlier)

Given

AIB = 109

Let

CAX = XAB = x

CBY = YBA = y

XIB = YIA = x+y ........exterior angles

XIB = YIA = 180-109 = 71 ............ sum of angles on a line

x+y = 71

ACB = 180 - 2x -2y ................. sum of angles of a triangle

= 180 - 2(x+y)

= 180 - 2(71)

= 180 - 142

= 38

6 0

3 years ago