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drek231 [11]
2 years ago
14

18. A jar contains 200 coins.

Mathematics
1 answer:
dimaraw [331]2 years ago
6 0

Answer:

Step-by-step explanation:

3 coins pulled are 10 cents or more

5 coins are under 10 cents    

so 3 out of 8 coins are 10 cents or more    

the jar contains 200 coins

This is a ratio problem  3 is to 8  as  x (an unknown value) is to 200

3/8  = x/200       solve for x

times both sides by 200

200(3/8) = x                          solve directly here using a calculator

600/8  = x                             or keep similifying until you can divide more

300/4  = x                              easily   I kept dividing the numerator and the

150/2   = x                              denominator by 2 until i got 150/2 = 75

75 = x

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vovangra [49]

Answer:

3y=x-1 OR y=⅓x-⅓

Step-by-step explanation:

Lets call the equation y=-3x+7 line l1

the other line passing through (4,1) l2

If two lines are perpendicular,then the product of their roots=-1

That is m(l1)×m(l2)=-1

Slope of l1=-3 therefore slope of l2=-1÷-3=⅓

Now that we have determined the slope of l2 we move on to find it's equation using the point-slope form

y-y1=m(x-x1)

y-1=⅓(x-4)

3y-3=x-4

3y=x-4+3

3y=x-1 OR y=⅓x-⅓

6 0
3 years ago
If 3 3/4 lb of candy costs 20 .25 how many would 1 lb of candy cost
Mrac [35]

solution:

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3 years ago
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What is 36kg in the ratio 7:2
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Answer:

28 Kg : 8 Kg

Step-by-step explanation:

Sum the parts of the ratio, 7 + 2 = 9 parts

Divide 36 Kg by 9 to find the value of one part of the ratio.

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Have a good day! :)

8 0
3 years ago
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