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Vesnalui [34]
3 years ago
15

Please help me! I don't have much time to complete the test, and anything helps. I'll give brainliest when I can!

Mathematics
2 answers:
mestny [16]3 years ago
7 0
Kim's table is correct
Eva8 [605]3 years ago
3 0

Answer:

The Answer is Kim.

Step-by-step explanation:

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Question 4 is B

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3 years ago
The area of a rectangular glass slab is 80 square centimeters and its perimeter is 36 centimeters. If the length and width of th
netineya [11]

First, you have to find out the values of the length and width.

Let l = length and w = width.

Set up your equation for area: l * w = 80

Set up your equation for perimeter: 2l + 2w = 36

We can use substitution for this problem, so find out the value of l or w. In this case, I will use the first equation to find out the value of l.

(Divide w on both sides) l = 80 / w

Since I know that l = 80 / w, I can substitute it into the second equation.

2l + 2w = 36, and l = 80 / w

= 2 (80/w) + 2w = 36

Simplify the equation.

= 160/w + 2w = 36

Get rid of the w in the denominator by multiplying the entire equation by w.

= ( 160/w + 2w = 36 ) * w

= 160 + 2w^{2} = 36w

= 2 ( w - 8 ) ( w - 10 )

The solutions for width (w) is 8 or 10. Then, you can use both 8 and 10 as your length and width, either or is fine. Multiply by 4 for each of those values and you get 8 x 4 = 32 and 10 x 4 = 40. The new perimeter would be 2(32) + 2(40) =

a. 144 cm

Hope this helped you! Let me know if there are any confusions :)


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3 years ago
Malia tried to prove that cos(0) =sin(90°-0) using the following diagram. her proof is not correct
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Can you show a picture of the diagram?

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The probability of spinning an even number, flipping tails, then spinning an odd number is
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Step-by-step explanation:

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Kate recorded the number of minutes she read each day for the last two weeks in the table.
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