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arlik [135]
3 years ago
12

Bridget has swimming lessons every fifth day and diving lessons every third day.If she has a swimming lesson and diving lesson o

n may 5,when will bee the date on which she has both swimming and diving lessons
Mathematics
1 answer:
kobusy [5.1K]3 years ago
3 0

Answer:

Step-by-step explanation:

she had both on May 5

swimming lessons every 5th day

5,10,15,20

diving lessons every 3rd day...

3,6,9,12,15

so they both have a common multiple of 15

so fifteen days after May 5 = May 20 <==

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a rectangular piece of metal is 10 in. longer than it is wide. squares with sides 2 in. long are cut from the four corners and t
lions [1.4K]
Volume of the box = length  * width * height

length of original peice = x + 10 , width = x

length of box  (x + 10) - 4  = x + 6
width of box = x - 4
height of box =  2

so we have 

2 * (x -4) * ( x + 6) = 832

2x^2 + 4x - 48 = 832

2x^2 + 4x - 880 = 0
x^2  + 2x - 440 = 0

(x + 22)(x - 20) = 0

x = 20

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4 years ago
What number should be added to the expression x2+2x to change it into a perfect square trinomial?
coldgirl [10]

Answer:

Option A. 1

Step-by-step explanation:

we know that

A perfect square trinomial is equal to

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In this problem we have

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equate the equations and solve for a

x^{2}+2x=x^{2}+2xa+a^{2}

so

2x=2xa

a=1

therefore

the perfect square trinomial is equal to (x+1)^{2}

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