Someone help ASAP plssss

Mathematics

2 answers:

aev [14]2 years ago

6 0

Answer:

Step-by-step explanation:

you are given the hypotenuse of 60 and a leg of 35

a^2 + b^2 = c^2

35^2 + b^2 = 60^2

1225 +b^2 = 3600

-1225 -1225

2375

B^2 = square root 2375

48.73 round up to 49

Ann [662]2 years ago

5 0

49!! it’s quite simple but i think someone put the explanation on ur comments :)

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The value of a precious gem stone has increased at a rate of 120% each year. If the gems's value started at $50 in 1920, how muc

Xelga [282]

Well first things first
You just subtract 2008-1920 to see how much the year gap is between the increasing percentage of the value of the gem
2008-1920=88
Then we must multiply 120x88
120x88 gives us a value of $105,60
Hoped this helped

8 0

3 years ago

Eight burgers and three orders of fries cost $79.49. Six orders of fries and twelve burgers cost $125.82.Find the price of one b

dezoksy [38]

Answer:

Burgers - $8.29 and fries - $4.39

Step-by-step explanation:

Let burgers - b, fries - f

8b + 3f = 79.49
12b + 6f = 125.82

Double the first equation and subtract the second equation:

16b + 6f - 12b - 6f = 2(79.49) - 125.82
4b = 33.16
b = 33.16/4
b = 8.29

Find f:

8(8.29) + 3f = 79.49
3f = 79.49 - 66.32
3f = 13.17
f = 13.17/3
f = 4.39

5 0

2 years ago

1. Find the derivative with respect to x of x +1/x from first principle.

Murrr4er [49]

If you mean $f(x)=x+\frac1x$ , then the derivative is

$\displaystyle f'(x) = \lim_{h\to0} \frac{\left(x+h+\frac1{x+h}\right) - \left(x+\frac1x\right)}h \\\\ = \lim_{h\to0} \frac{(x+h)-x}h + \lim_{h\to0} \frac{\frac1{x+h} - \frac1x}h \\\\ = \lim_{h\to0} \frac hh + \lim_{h\to0} \frac{x-(x+h)}{hx(x+h)} \\\\ = \lim_{h\to0} 1 - \lim_{h\to0} \frac h{hx(x+h)} \\\\ = 1 - \lim_{h\to0} \frac1{x(x+h)} \\\\ = \boxed{1 - \frac1{x^2}}$