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ohaa [14]
3 years ago
6

The number of significant digits in 650600000 is

Mathematics
1 answer:
kari74 [83]3 years ago
6 0
6506 or 656 is the answer
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Problem PageQuestion It takes an older pump twice as long to drain a certain pool as it does a newer pump. Working together, it
umka2103 [35]

Answer:

It will take 6 hours for the new pump to drain the pool.

Step-by-step explanation:

As the complete question is not given, the complete question is found online and is attached herewith

Let the rate of new pump is given as x=W/t_1

Let the rate of the old pump is given as y=W/t_2

it is given that the time t_2=2t_1

So by substituting the values of t_2 in the rate equation of y

y=W/2t_1

y=(W/t_1*2)=x/2

Also the total rate of both the pumps is given as W/t3 where t3 is given as 4 hours so the equation becomes

x+y=W/4

x+x/2=W/4

3x/2=W/4

As x=W/t_1

3W/2t_1=W/4

Now as W is same on both sides so

3/2t_1=1/4

12=2t_1

t_1=6 hours

So it will take 6 hours for the new pump to drain the pool.

7 0
3 years ago
Evaluate the expression for n=-3
satela [25.4K]

Answer:

5n is your answer hope this help

4 0
3 years ago
Pls answer all :D tysmm ill mark brainliest
jek_recluse [69]

Answer:

13= -13

14= 57

15= 216

Step-by-step explanation:

hoep this helps

6 0
2 years ago
3600 dollars is placed in an account with an annual interest rate of 9%. How much will be in the account after 25 years, to the
Arlecino [84]

Answer:

31043.09

Step-by-step explanation:

Kinda feel bad for the last person who answered! They were way off but still you need to learn from your mistakes! Welp this answer is STRAIGHT OFF THE BACK from delta MATH! So this IS correct! If this helped click the stars and the heart to help fellow students, educators, etc. Understand this answer is for certain correct! I would add the steps but there is alot!

3 0
3 years ago
16/9(1.2b)=4.8(20/3)<br> solve
mart [117]

\frac{16}{9}(1.2b)=4.8( \frac{20}{3})

Multiply 4.8 into (20/3), and multiply 16/9 with (1.2b)

\frac{19.2b}{9} = \frac{96}{3}

\frac{19.2b}{9} = 32  Multiply 9 on both sides

19.2b = 32(9)

19.2b = 288          Divide 19.2 on both sides

b = 15

4 0
3 years ago
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