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olga nikolaevna [1]
3 years ago
6

The area of a rectangle is 45 sq ft. its perimeter is 36 ft. Find the length and width.

Mathematics
2 answers:
mr_godi [17]3 years ago
8 0
You have to divide 36 and 2
ivann1987 [24]3 years ago
8 0
3 ft for length and 2.5

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The length of a rectangle is 7 inches less than twice the width, w, of the rectangle.
Ivan

Answer:

Step-by-step explanation:

Let w represent the width of the rectangle.

The length of a rectangle is 7 inches less than twice the width, w, of the rectangle. It means that the length is (2w - 7) inches

Part A

The function that gives the area as a function of the width is

A(w) = w(2w - 7)

Part B:

If the area of the rectangle is 60 square inches, it means that

w(2w - 7) = 60

2w² - 7w = 60

2w² - 7w - 60 = 0

2w² + 8w - 15w - 60 = 0

2w(w + 4) - 15(w + 4) = 0

2w - 15 = 0 or w + 4 = 0

w = 15/2 or w = - 4

Since w cannot be negative, then

w = 15/2 = 7.5 inches

4 0
3 years ago
For what value of x would the expression below be undefined? 2x − 15 x + 9
Naddik [55]
Hey there!

I'm assuming your expression is actually \frac{2x - 15}{x + 9}. If it's not, let me know and I'll be happy to help you out further. 

If x were equal to –9, your expression would be undefined. If you solve it with this value plugged in for x, you will get the following: 

\frac{2x - 15}{x + 9}

\frac{2(-9) - 15}{(-9) + 9}

\frac{-18 - 15}{0}

\frac{-33}{0}

error

You can't divide anything by zero. This expression would be undefined if x were –9 since it makes the denominator zero. Therefore, x ≠ –9. 

Hope this helped you out! :-)
7 0
3 years ago
Any answers get 5 stars, Best answer gets brainliest!
Romashka [77]
B: Negative 9 and 3 over 6
4 0
3 years ago
Read 2 more answers
81+6=h which equal 1 so 81+6+1
Ahat [919]

Answer:

81 + 6 + 1 = 88 if that's your question

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Please answer these questions I will mark brainliest
igor_vitrenko [27]
1. C

2. A

3. A

i’m pretty sure for 1,2. 3 i’m a little iffy but i think it’s A bc “homogenizing”
4 0
3 years ago
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