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babymother [125]
3 years ago
13

A notebook has a perimeter of 36 inches. It’s area is 80 square inches. What are the dimensions of the notebook

Mathematics
1 answer:
earnstyle [38]3 years ago
7 0
Let's call he width of the notebook w and the length l

w*l=80

2(w+l)=36
w+l=18
w=18-l

(18-l)*l=80
-l^2+18*l-80=0
l=8 or 10

Therefore, the notebook is 8 by 10 inches


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G = {(5,3), (2, 3), (6,4)} Is G^-1 a function and why?
sleet_krkn [62]

Answer:

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All I've done is swap the (x,y) values for each ordered pair to form the inverse relation. As you can see, x = 3 leads to multiple y value outputs which is why this relation is not a function. So in short, the answer is choice C. To have the inverse relation be a function, each value in the original domain must map to exactly one value in the range only. However that doesn't happen as the domain values map to an overlapping y value (y = 3).

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3 years ago
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3 years ago
A right triangle is shown with an angle that measures 60 degrees. The leg adjacent to the 60 degree angle is labeled 5. The leg
Luda [366]

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x = 5 \sqrt{3}

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6 0
3 years ago
help me its easy Triangle DOG is an isosceles triangle with DO = OG, and mD = 18. What is mO? A. 18 B. 36 C. 144 D. 162
S_A_V [24]
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4 0
3 years ago
Quick!!
Ira Lisetskai [31]

Answer:

c) three

-----------------------------------------------------------------------------------------------------------------

Step-by-step:

The tetrahedron is a triangular pyramid with equilateral triangles on each face.

3 0
2 years ago
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