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otez555 [7]
2 years ago
7

Can someone please answer this question? I really need the answer please. Q:Two signs are on a street. One blinks every 10 s and

the other every 6 s. How many times per minute do they blink together?
Mathematics
1 answer:
cluponka [151]2 years ago
3 0
16 times per minute
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Can someone help me with all these!im giving brainliest:)
xenn [34]

Step-by-step explanation:

  • 1a.2.
  • b.1/2 base×height
  • c.2 ×1/2 base×height
  • base×height

b.

  • 1m=100cm
  • 1m²=100cm×100cm
  • 1m²=10000cm²
  • 0.25m²=0.25×10000cm²
  • 0.25m²=2500cm²

C.

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6 0
3 years ago
David runs on a track that is 1/4 mile long he completes it in 1/20 of an hour
posledela

Answer:

<h2> 5mile per hour</h2>

Step-by-step explanation:

Step one:

given data

distance= 1/4mile

time taken= 1/20 hour

Step two:

Required

speed

we know that speed is

speed= distance/time

substituting

speed= 1/4/1/20

speed=1/4*20/1

speeed=20/4

speed=5mile/hour

The option a sis correct, the speed is 5mile per hour

7 0
3 years ago
There are 23 classes in the fourth grade. Each grade has 21 students. Write a number sentence that will provide a reasonable est
lapo4ka [179]
23 can round to 20 and 21 can also round to 20 so all u do is 20x20=400 so 400 is your estimated answer
6 0
3 years ago
If a =7 , find the area of it . <br><br> Please give me the answer I have a exam at 12.00
Sindrei [870]

Answer:

60cm²

Step-by-step explanation:

Area of a rectangle = length x breath

Let,

length (L) = (a-1) cm

breadth (B) = (a+3) cm

Putting the value of a = 7;

we get,

length= 7-1 = 6 cm

breadth= 7+3 = 10 cm

Therefore, area of the rectangle = L x B

= 6 x 10

= 60 cm²

3 0
3 years ago
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jek_recluse [69]

After each hour 60% ( or 0.60) of the drug will be present.

The equation is A = 100(0.6)^t where t = time in hours. (answer)

5 0
3 years ago
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