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babymother [125]
3 years ago
7

A ten-foot-long board is cut into three pieces. The second piece is half as long as the first. The third piece is 4 feet longer

than the second. How long is the first piece?
Mathematics
1 answer:
VladimirAG [237]3 years ago
7 0
Let's say the second piece is x ft long
The first piece is 2x ft long
The third piece is x+4 ft long
All of the pieces should add up to 10ft
x+2x+x+4=10
4x= 6
x=1.5ft
The first piece is 2x ft long=3 ft long
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Which expression gives the distance between the points (2,5) and (-4, 8)?
german

Answer:

A. (2+4)² +(5-8)²

Step-by-step explanation:

To find then distance between two points, we will follow the steps below;

write down the formula

D = √(x₂-x₁)²+(y₂-y₁)²

(-4, 8)

x₁=-4

y₁ = 8

(2,5)

x₂=2

y₂=5

we can now proceed to insert the values into the formula

D = √(x₂-x₁)²+(y₂-y₁)²

   

   = √(2+4)²+(5-8)²

    =√(6)² + (-3)²

   =√36+9

   =√45

Therefore the expression which gives the distance between two the two points is  (2+4)² +(5-8)²

7 0
3 years ago
A team is excavating an archeological site. The original plan was to excavate a rectangular area 35 ft long
nikitadnepr [17]

Answer:

Part 1) The length of the new rectangle is 87.5\ ft

Part 2) The area of the new rectangle is 4,375\ ft^{2}

Step-by-step explanation:

we know that

If two rectangles are similar, then the ratio of its corresponding sides is proportional

step 1

Find the length of the new rectangle

Let

L-----> the length of the new rectangle

\frac{50}{20}=\frac{L}{35}\\ \\ L=50*35/20\\ \\L=87.5\ ft

step 2

Find the area of the new rectangle

we know that

The area of the rectangle is

A=LW

we have

L=87.5\ ft

W=50\ ft

substitute

A=(87.5)(50)=4,375\ ft^{2}

3 0
3 years ago
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Answer:

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3 0
2 years ago
Can someone help me please !???
AfilCa [17]

Answer:

3 (x-12) (x+2)

Step-by-step explanation:

3 ( x^2 - 10 x - 24)

3 (x-12) (x+2)

Please mark for Brainliest!! :D Thanks!!

For more questions or more information, please comment below!

8 0
3 years ago
I need help with three math (algebra) problems?
Bumek [7]
1.
A. (49-8)*2-16, 41*2-16, 82-16, 66, yep
B. 49-8*-14, 49+112, 161, nope
C. 7^(-16)-16, (1/(7^16))-16, nope
D. 49-16-16, 17, nope

A is answer


2.
2((a+b)²-b)
2((7+1)²-1)
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126
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4.
none of the options give the answer
3 0
3 years ago
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