When a number is decreased by 4.5%, the result is 90. What is the original number to

Mathematics

1 answer:

Contact [7]3 years ago

3 0

Answer:

x = 94.2

Step-by-step explanation:

Let x represent the number

x - 4.5%x = 90

x - 4.5/100x = 90

x - 0.045x = 90

0.955x = 90

Divide both sides by 0.955(the coefficient of )

x = 90/0.955

x = 94.2

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Pablo, Sofia, and Mia got some candy eggs at a party. Pablo had three times as many eggs as Sofia, and Sofia had twice as many e

andrezito [222]

Pablo : 3(2x) = 6x
Sofia : 2x
Mia : x

Assuming x = 10
Mia : x = 10
Sofia : 2x = 2(10) = 20
Pablo : 3(2x) = 3(20) = 60

10 + 20 + 60 = 90
90/3 = 30 candy eggs per person

Pablo: 60 x 1/2 = 30
Sophia: 30-20 = 10 : 10
Mia : 30 - 10 = 20 : 20

Ratio of eggs given to sophia from pablo's set = 10/60 = 1/6
Ratio of eggs given to mia from pablo's set = 20/60 = 2/6 = 1/3

8 0

3 years ago

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Stella [2.4K]

Answer:

19 = x

Step-by-step explanation:

The square of the tangent segment = The product of (whole secant segment) (the outside part of the secant segment)

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8² = (x - 3)(4)

64 = 4x - 12