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Stells [14]
2 years ago
10

the the area of a rectangle with perimeter 40 cm and 75 cm square find the length and width of the rectangle​

Mathematics
1 answer:
Olin [163]2 years ago
6 0

Answer: 15cm and 5cm

Step-by-step explanation:

A rectangle's area is the product of the length and width

Given length x and width y, 2x+2y = 40 and x*y = 75.

Verifying my answer:

2(15)+2(5) = 40

30+10 = 40

40 = 40

15*5 = 75

75= 75

This is a week late so I hope this helped.

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Write an equation and graph it to show that it is either a function or not. Provide a picture of your graph
Elza [17]

So this is more of an open-ended question. You get to pick a type of function, graph it, and then show if it is a function or not.

The first step is to pick one of these functions. I have them in order from least complicated to most intricate, but you can chose any of these:

Linear:

y = x

Quadradic:

y =  {x}^{2}

Logarithmic:

y =  log_{2}(x)

Circular:

{x}^{2}  +  {y}^{2}  = 4

Rational:

y =  \frac{1}{x}

There are plenty of other types of functions that you can use additionally. Moving on though,

The second step is to show if it is actually a function or not. The easiest way to do this, especially since we are using graphs, is to conduct the verticle line test.

Draw a straight line from top to botom on the graph, then ask yourself "Does it pass through the function more than once?" If it does, then it is not a function, otherwise, you can safely say that the graph is a function. You are going to want to do this more than once.

I included a picture of the graph of the circular equation, and the verticle line tests for it. In the picture, you can clearly see that all of the verticle lines touch the graph more than once.

If you have any other questions, let me know.

6 0
3 years ago
7. The length of a rectangle is 12 in. and the perimeter is 56 in. Find the width of the rectangle. A. 22 in. B. 16 in. C. 32 in
Eduardwww [97]
I believe the answer would be b. I think this is because you know that the perimeter is the length times 2 and the width times 2 added together. If you do 12 times 2 you get 24. Then you subtract this from 56 because 56 is the perimeter of the whole thing. Then after this you get 32.Then divide 32 by 2 to find ONE of the widths.
5 0
3 years ago
PLEASE HELP!!!!
Allushta [10]

Answer:

B. 165

Step-by-step explanation:

Let w represent the number of weeks.

We have been given that a wrestler currently weighs 189 pounds and is losing 0.5 of a pound per week. So the weight lost by wrestler in w weeks would be 0.5w.

The total weight of wrestler after w weeks would be:

189-0.5w

We are also told that the wrestler needs to weigh more than 165 pounds but less than or equal to 185 pounds. This means that total weight of wrestler should be less than or equal to 185 pounds and greater than 165 pounds.

We can represent this information in an inequality as:

165

Therefore, option B is the correct choice.

4 0
3 years ago
An investor bought 40 shares of ABC corporation's stock at $80 a share. Two weeks later, the investor receives notice that the c
Eva8 [605]
<span>The correct answer is C: 80 shares of the stock and the price of each share is $40.</span>
8 0
3 years ago
Noah wants to buy a 5 year annuity that pays $1000 at the end of each year, starting one year from now. It earns interest at 6.2
pav-90 [236]

Answer:

cost is $4183.87

Step-by-step explanation:

given data

time t = 5 year

amount A = $1000

rate r = 6.25 %  = 0.0625

to find out

how much it will cost

solution

we will apply here formula for present value of annuity that is express as

present value = amount ×\frac{1-(1+r)^{-t}}{r}      ....................1

put here all these value we get cost we will pay

present value = amount ×\frac{1-(1+r)^{-t}}{r}

present value = 1000 ×\frac{1-(1+0.0625)^{-5}}{0.0625}

present value = 4183.869221

so cost is $4183.87

5 0
3 years ago
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