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Amiraneli [1.4K]
3 years ago
15

A board, 28 cm long is cut into three pieces such that the second piece is twice as long as the first and the third is 3 cm long

er than the second. Find the length of the shorter piece.
Mathematics
2 answers:
motikmotik3 years ago
7 0

Answer:

I found the answer, sorry for the last answer it mustve thrown you off, and I know its late but here we go. So its 5cm because 5cm is one piece, if we double that it is 10cm, this is our second piece. It states that the third piece is 3cm longer than the second, which would be 13cm. So 13cm+10cm+5cm is 28cm, the length of the original board

hope i helped this time

vfiekz [6]3 years ago
5 0
52 cm long is cut into three pieces
x + y + z = 52
such that the second piece is twice as long as the first
y = 2x
third is 7 cm longer than the second
z = y + 7

So,
z = 2x + 7

x + 2x + 2x + 7 = 52
5x = 45
x = 9
y = 18
z = 25. I think
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Please help worth 25 points
wariber [46]

Answer:

h=6 feet

Step-by-step explanation:

Given: 1. The base of a rectangle is three feet longer than its height.

2.Are of the rectangle=54 square meters

Let us say the rectangle has height h and base(breadth) b.

Since, the base of the rectangle is three feet longer than the height, we have b=h+3.

Also, Area of the Rectangle= hb

therefore, 54=h(h+3)

54= h2+ 3h

h2+3h-54=0 (Subtract 54 from both the sides)

To find the value of h we have to solve the quadratic equation.

[We have the equation in the form ax2+bx+c=0, to factorise the equation-

Step1. Find two numbers such that their multiplication is equal to ac and their addition is equal to b.

Step2. Replace b with these numbers.

Step3. Simplify the equation]

So, h2+3h-54=0

h2+9h-6h-54=0

h(h+9)-6(h+9)=0

(h+9)(h-6)=0

Which gives-

h= -9 or h= 6

As h is the height of the rectangle, h can not be -9.

so h=6 feet

and b=h+3=9 feet

So the dimensions of the rectangle are 6 feet for the height and 9 feet for the base.

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3 years ago
Simplify 6 to the second power
kirill115 [55]

Answer:

<h2>36</h2>

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PLEASE HURRY, thanks!
forsale [732]
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2^64=18,447,744,073,709,551,616 which is not even close to what we want at all

So the answer is C 2^12
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Leona [35]
Number of pounds purchased multiplied by price per pound equals the total $ spent.

x= # pumpkin pounds purchased
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x=150 pumpkin pounds purchased

Hope this helps! :)
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3 years ago
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