A fisherman can

Mathematics

1 answer:

viva [34]2 years ago

5 0

Answer:

4 [miles].

Step-by-step explanation:

1) the condition 'the entire trip took 5 hours' can be written as (where t_us - time spent upstream, t_ds - time spent downstream)

$t_{us}+t_{ds}=5;$

2) but the distance [D] upstream is equal the distance downstream, then the condition above can be written:

$\frac{D}{V_{us}} +\frac{D}{V_{ds}} =5; \ (V_{us}-rowing \ upstream,V_{ds}-rowing \ downstream);$

3) finally,

$D=\frac{5V_{us}*V_{ds}}{V_{us}+V_{ds}};$

D=5*4/5=4 [miles].

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Peter also earns a certain amount per hour. The table shows the amount of money, in dollars, he earns in a given number of hours

drek231 [11]

To determine how much you get per hour, divide 44 by 4, 88 by 8, and 132 by 12. Each time you get 11, so you get 11 dollars an hour.

If y = money earned and x = number of hours worked, then

y=11x
because the money you get is 11 times the amount of hours you work.

Hope this helps and I can provide further explanation if needed!

3 0

3 years ago

Can someone answer these questions & explain how to get the answer will mark brainlest!

viva [34]

Answer:

25) 3 = 5 + secΘ where we have 2 possible values of Θ (2π/3 or 4π/3)

3 = 5 + sec (2π/3)

3 = 5 + sec (120 degrees)

3 = 5 + (-2)

3 = 3

theta = 4π/3

3 = 5 + sec (240 degrees)