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irinina [24]
3 years ago
12

A rectangle has a length of x+5 and a width of 2x-9. Using the formula for the perimeter of a rectangle , P=2L + 2W, write an ex

pression to represent the perimeter of the rectangle in simpliest form.
HELP PLEASE OMG.​
Mathematics
2 answers:
seraphim [82]3 years ago
4 0
16 length height bc it’s a triangle so the triangle will be 17 feet tall and long
Katyanochek1 [597]3 years ago
4 0

As you stated the formula of a rectangle is P (perimeter) = 2W (the two widths added together) + 2L (the two lengths added together).

To solve this algebraicly you need to define your variable, or unknown, which in this case is the width or "W".

Now set this same equation with any symbol you wish, "x" is often used, and solve for x. You could keep W instead of X also if it makes it easier to work the problem.

P= 2x + 2L

isolate the 2x by subtracting 2L from both sides.

P-2L=2x

Now isolate the x by dividing both sides by 2 and you have

P-2L/2=x

x will be W. Just put in the numbers of P and L and you will have solved for W.

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RideAnS [48]

Answer:

The confidence level for a confidence interval of 46.4% to  47.6% is 99.7%.

Explanation:

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A. 85% B. 95% C. 68% D. 99.7%

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In conclusion, from the choices presented, the best option is the last one. Option D.


5 0
4 years ago
Read 2 more answers
Amy has $1,000 in a savings account at the beginning of the fall. She wants to have at least $500 in the account by the end of t
LuckyWell [14K]

Answer:

D. 1000 - 100w \geq 500; w \leq 5

Step-by-step explanation:

Given:

Initial amount in the bank = $1000

Money withdrawn each week = $100

Final amount should be at least $500.

Now, let the number of weeks the money is withdrawn be 'w'.

Therefore,

Money withdrawn in 'w' weeks = \textrm{Money withdrawn each week}\times w

Total Money withdrawn in 'w' weeks = 100w

Now, final amount after 'w' weeks is equal to the difference between initial amount and total withdrawal amount. Therefore,

Final amount = Initial amount - Total withdrawal amount

Final amount = 1000 - 100w

Now, final amount must be greater than or equal to $500. So,

\textrm{Final amount}\geq500\\\\1000-100w\geq500

Therefore, the  inequality that represents the inequality for the number of weeks Amy can withdraw money is:

1000-100w\geq500

Now, let us solve for 'w'.

Adding -500 and 100w both sides, we get:

1000-500-100w+100w\geq500-500+100w\\\\500\geq100w\\\\\textrm{The above inequality is reversed when taking 100w on the left side}\\\\100w\leq500\\\\w\leq\frac{500}{100}\\\\\therefore w\leq5

Therefore, the correct option is (D).

7 0
3 years ago
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Mice21 [21]

Answer:

System of two linear equations can't have exactly two solutions. Reason is that when we have two straight lines,they can only intersect at one point of intersection,no more. Or let's see if lines are equivalent,then they have infinitely many solutions,because any point on line can be solution for the system.

Step-by-step explanation:

5 0
3 years ago
How can I simplify 1/2 + 2/3. Do I add,then divide.
IRISSAK [1]
You can converte them to a common denominator like 6. 1/2 would be 3/6. 2/3 would be 4/6.
6 0
3 years ago
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459 divided by 3 how to show your work on paper
melomori [17]
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7 0
3 years ago
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