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Ket [755]
3 years ago
12

Use the explicit formula = 3 − 7( − 1) and

Mathematics
1 answer:
ivann1987 [24]3 years ago
3 0
I’m pretty sure it is C but I’m not sure if I’m right or not
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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

6 0
3 years ago
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3 years ago
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k0ka [10]

Step-by-step explanation:

3×10^10 is the scientific notation of 30000000000

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Find the area and perimeter of triangle ABF with F(-3,0), A(1,3), and B(7,-5)
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Step-by-step explanation:

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