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2 years ago

An envelope from the post office is 7 inches wide and 8 inches long. What is the perimeter of the envelope?

Mathematics

1 answer:

EastWind [94]2 years ago

5 0

The perimeter of the envelop is 30 in.

Step-by-step explanation:

Given,

The length (l) of the envelop = 7 inches

Width (b) of the envelop = 8 inches

To find the perimeter of the envelop.

Formula

The perimeter of a rectangle = 2(l+b)

So,

The perimeter of the envelop = 2(7+8) in

= 30 in

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A zoo is open 5 days a week. For one week, zoo attendance per day was 113,185,140,219, and 295. What was the mean number of p

jarptica [38.1K]

To find the mean of a set of numbers you simply add all the numbers then divide by how many numbers you added

113+185+140+219+295 = 952

952/5 = 190.4 (if you need it rounded, just put 190)

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2 years ago

sarah spent a total of 10 on oranges and apples at the supet market. if she spent 3 dollars less for oranges than she did on app

beks73 [17]

Let's write 2 equations from the two statements given.

Sarah spent 10 dollars on both oranges and apples

Let the price of oranges be "x" and price of apples be "y", thus we can write:

$x+y=10$

Oranges cost 3 less than apples, thus we can say:

$y-3=x$

We can substitute this into the first equation and solve for y:

$\begin{gathered} x+y=10 \\ y-3+y=10 \\ 2y=10+3 \\ 2y=13 \\ y=\frac{13}{2} \\ y=6.5 \end{gathered}$

Thus, let's solve for x now,

$\begin{gathered} x=y-3 \\ x=6.5-3 \\ x=3.5 \end{gathered}$

We want the price of oranges (x), thus,

Price of Oranges = $3.50

3 0

3 months ago

Leonard and Liam each own a collection of vintage cars. Leonard has 7 cars more than Liam has. Three times the number of cars Le

dimulka [17.4K]

Answer: The answer is (22, 15).

Step-by-step explanation: Given that 'x' represents the number of cars Leonard has and 'y' represents the number of cars Liam has.

Then, according to the given information, we have

$x-y=7,\\\\3x+2y=96.$

Multiplying the first equation by 2 and adding to the second equation, we have

$2x+3x=14+96\\\\\Rightarrow 5x=110\\\\\Rightarrow x=22.$

So,

$y=x-7=22-7=15.$

Therefore, Leonard has 22 cars and Liam has 15 cars.

Thus, (22, 15) is the solution to the given system.

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2 years ago

Read 2 more answers

How to find the area of a triangle with three points in 3d?

Otrada [13]

Again u just have to meaiuse

8 0

2 years ago

310=-6.2f solve for f

Naddik [55]

Divide both sides by -6.2:
-50 = f

6 0

2 years ago