Fie sirul de nr 7,17,21,28........ a) Aflati termenul de pa locul 2015 b) Aflati suma primilor 2015 termeni ai sirului Ajutati-ma , va rog!!!!!!
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Answer:
Aflati suma primilor 2015 sirul de
Step-by-step explanation:
Answer:
That's correct ^^^
Step-by-step explanation:
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HELP
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Here in the expression, 3y is a common term.
So,
So, the answer is
3y(2-5y) (taking 3y as common)
clearly 3y(2-5y) cannot be factorised further hence this is the answer
Answers
Answer:
x + √y
Step-by-step explanation:
A number x plus the square root of a number y
There are two variables involved
Variable x
Variable y
Plus means addition
Square root of y can be written as
√y
A number x plus the square root of a number y can be written as
x + √y in algebraic expression
The answer is x + √y
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(csc^2 + cot^2)(csc^2 - cot^2)
then, since cot^2 + 1 = csc^2, you can replace the csc^2 in the left parentheses with cot^2 + 1, and the cot^2 in the right parentheses with csc^2 - 1 (which equals cot^2)
then, youll end up with
(cot^2 + 1 - cot^2)(csc^2 + csc^2 - 1)
combine like terms, and the left parentheses becomes 1 (cot^2 - cot^2 = 0), and the right parentheses becomes 2csc^2 - 1.
1(2csc^2 - 1) = 2csc^2 - 1
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P = 2 ( l + w )
Now, we know that the fencing costs $15.00 per foot, and that the length is 19.50 feet.
We first need to find the price of one "length" side of the fence.
To do this, multiply 19.50 by 15.00
19.50 x 15.00 = 292.5
Next, we look at the perimeter equation to see what we can plug in where.
P = 2 ( l + w )
We can put in the total price of the fencing for the yard as P, and the amount of one length side of the fence as l.
945.00 = 2 ( 292.5 + w )
And now, we simply solve for w.
945.00 ÷ 2 = ( 2 ( 292.5 + w ) ) ÷ 2
472.5 = 292.5 + w
472.5 - 292.5 = 292.5 + w - 292.5
w = 180
It costs $180 for one "width" side of the fence.
To find out how many feet that is, we do the opposite of what we did with the length. Instead of multiplying by $15.00, we divide by $15.00
$180.00 ÷ $15.00 = 12
The width of Claire's backyard is 12 feet.