3 years ago

Question: 4:(x−3)=2:3

Mathematics

1 answer:

kirill [66]3 years ago

5 0

Answer:

y=6

Step-by-step explanation:

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Randomly selected statistics students of the author participated in an experiment to test their ability to determine when 60 sec

Zanzabum

Answer:

The answer would be: We are 95% confident that the interval from 55.4 seconds to 61.2 seconds actually does contain the true value of μ.

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3 years ago

What is 9564 rounded to the nearest thousand?

Ket [755]

Answer:

10,000

Step-by-step explanation:

9564

9=thousands

5=hundreds

6=tens

4=ones

the number behind the thousands (5) must be 5 or higher to be able to round up. Because the number in the hundreds place is 5, the 9 can round up to 10, making it ten thousand (10,000).

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3 years ago

Read 2 more answers

Train a is traveling at 30 mph faster than train b. If train a travels 350 miles in the same amount of time that train b travels

GalinKa [24]

Answer:

20 mph

Step-by-step explanation:

Let speed of Train a = Va mph

Let speed of Train b = Vb mph

Va = Vb + 30

Let time taken for Train a = Ta

Let time taken for Train b = Tb

time taken = distance travelled/speed

Ta = 350/Va = 350/(Vb+30)

Tb = 140/Vb

But they both travel in the same amount of time.

So, Ta = Tb

$\frac{350}{v_{b} + 30}=\frac{140}{v_{b}}$

Cross multiply

$350v_{b} = 140(v_{b} + 30)\\\\350v_{b} = 140v_{b} + 4200\\\\350v_{b} -140v_{b} = 4200\\\\210v_{b} = 4200$

Divide both sides by 210

$\frac{210v_{b} }{210} \frac{4200}{210} \\\\v_{b} = 20 mph$

4 0

2 years ago

HELP ME I NEED THE RIGHT ANSWER

Annette [7]

Answer:

the slope is positive 10

5 0

3 years ago

Is this right I just need a yes or no answer (working on slope)

sveticcg [70]

Neither is correct. please try again and re-ask for answers or hint.

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3 years ago