3 years ago

Which sign makes this number sentence true?

Mathematics

1 answer:

I am Lyosha [343]3 years ago

4 0

Answer:

C. =

Step-by-step explanation:

whenever you have | | It will always be positive so -6 turns to 6 and that makes it equal.

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viva [34]

You’re answer would be B

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3 years ago

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Two ferries travel across a lake 50 miles wide. One ferry goes 5 miles per hour slower than the other. If the slower ferry leave

Zepler [3.9K]

Answer:

Step-by-step explanation:

Let x be the speed of first ferry.

Then the speed of second slower ferry is x-5 (since 5 miles per hour slower)

Time taken by first ferry = distance/speed = $\frac{50}{x}$

Time taken by second ferry = $\frac{50}{x-5}$

Since second ferry starts one hour early, difference in times is 1 hour.

$\frac{50}{x-5}-\frac{50}{x}=1\\50x-50(x-5)=x(x-5)\\250 = x^2-5x\\x^2-5x-250 =0\\(x-10)(x+5) =0\\x=18.5, -13.5$

Speed cannot be negative.

Hence answer is speed of the first ferry = 18.5 mph

and second ferry i.e. slower ferry is = 13.5 mph

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3 years ago

The fraction bar represents which equation?

Vera_Pavlovna [14]

Answer:

what equation silly

Step-by-step explanation:

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3 years ago

A clinical trial is being ran to see if a new headache medication offers relief for more than 80% of patients. It is found there

ryzh [129]

Answer:

Hence there is a strong probability the true proportion of patients who get relief from headaches while on this medication is greater than 80%.

Step-by-step explanation:

The required truth is " there's strong evidence this medication reached its the goal of quite 80% of patients getting relief. " Because we wanted to check whether the new medication offers relief for quite 80% of patients or not.

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3 years ago

The sum of one and one third and five sixth

Svetlanka [38]

1/3 = 2/6
so 2/6 + 5/6 = 7/6 or 1 1/6
1 1/6 + 1 = 2 1/6

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3 years ago

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