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3 years ago

Candace is knitting a scarf. The scarf is 4.6 feet long. if she knits another 1.75 feet, how long will the scarf be?

1 answer:

7 0

All we need to do for this one is add. She is adding on to the length, so we need to add the length before she added on to the length that she did add on.
4.6+1.75=6.35
The scarf will be 6.35 ft long.

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2x+4y=12 y=0.25x-3 What is the solution to the system of equations?

ololo11 [35]

{ 2 x + 4 y = 12
y = 0.25 x -3

Arrange equation variables of elimination :

{ 2 x + 4 y = 12
-0.25 x + y = - 3

Multiply ( -0.25 x +y = - 3 ) by 8 :

8y - 2 x = - 24

{ 2 x + 4y = 12
-2x + 8y = -24
----------------------
12 y = -12

y = - 12 / 12

y = - 1

For x :

2 x + 4y = 12

2 x + 4 ( - 1 ) = 12

2 x - 4 = 12

2 x = 12 + 4

2 x = 16

x = 16 / 2

x = 8

x = 8 and y = - 1 => ( 8 , - 1 )

Answer b

hope this helps!

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3 years ago

a rectangular room is twice as long as its breadth and its peimeter is 540 m. find the number of bricks of size 20 cm ×12cm to p

balu736 [363]

Answer:

Step-by-step explanation:

breadth = x

length = 2x

Perimeter = 540m

2*( length + breadth ) = 540

2 *(2x + x) = 540

3x = 540/2

3x = 270

x = 270/3

x = 90 m

Breadth = 90m = 90 *100 = 9000 cm

Length = 2*90 = 180 m = 180 * 100 = 18000 cm

No.of bricks = Area of room/ area of one brick

= 9000 * 18000 / 20 * 12

= 675000 bricks

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2 years ago

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myrzilka [38]

Answer:

$2\pi \: r$

<h3>4th answer is correct</h3>

Step-by-step explanation:

$2 \times \pi \times r$

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2 years ago

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olasank [31]

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Step-by-step explanation:

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valina [46]

Answer:

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Step-by-step explanation:

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2 years ago