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3 years ago

Jane took 30 min to drive her boat upstream to water-ski at her favorite spot. Coming back later in the day, at

Mathematics

1 answer:

balu736 [363]3 years ago

5 0

Answer:

Step-by-step explanation:

Jane took 30 min to drive her boat upstream to water-ski at her favorite spot. Coming back later in the day, at

the same boat speed, took her 10 min. If the current in that part of the river is 6 km per hr, what was her boat

speed in still water?

Let b+6 be downstream rate.

and b-6 be upstream rate.

Distance up = Distance down = (rate)(time)

(b+6)(1/6 hr) = (b-6)(1/2 hr)

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125 + .375=?<br><br><br> 0.654 + 0.389 - 0.293=?

Lana71 [14]

If it's 125 + 0.375 then the answer is 125.375

and for the second it's 0.75

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3 years ago

Read 2 more answers

Inside a square with side length 10, two congruent equilateral triangles are drawn such that they share one side and each has on

Sphinxa [80]

Answer:

5 length

Step-by-step explanation:

The diagram attached shows two equilateral triangles ABC & CDE. Since both squares share one side of the square BDFH of length 10, then their lengths will be 5 each. To obtain the largest square inscribed inside the original square BDFH, it makes sense to draw two other equilateral triangles AGH & EFG at the upper part of BDFH with length equal to 5.

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3 years ago

Under the normal curve, approximately what percent of scores fall between and -1 to +1 standard deviations around the mean?

prohojiy [21]

According to the empirical rule, roughly 68% of the scores fall between z = -1 and z = 1

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4 years ago

Yosef purchased a new sweater. The total price of the sweater, including the 8% sales tax, was $16.74. What was the retail cost

Yanka [14]

Answer:

15.40, lol yeet, this one's EZ

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3 years ago

I need help, sleps plzz , i dont understand plzzz dont ignoree!!!!!!!!!!!!

denpristay [2]

Answer:

x = $\frac{3+\sqrt{105} }{8} , \frac{3-\sqrt{105} }{8} x=1.655,-0.905$

Step-by-step explanation:

3x+6 = 4x^2

4x^2 -3x -6 = 0

x = $\frac{3+\sqrt{105} }{8} , \frac{3-\sqrt{105} }{8} x=1.655,-0.905$

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3 years ago