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stiv31 [10]
4 years ago
14

What is the surface area of the square pyramid represented by the net? Enter your answer in the box. cm² An unfolded square base

pyramid with sides of the base being seven centimeters and the length from the base to the tip is nine centimeters.
Mathematics
1 answer:
kumpel [21]4 years ago
3 0
Area of the base = 7 x 7 = 49 cm²

Area of the 4 triangles = 4 x [ 1/2 x 7 x 9]
Area of the 4 triangles = 4 x 31.5
Area of the 4 triangles = 126 cm²

Total Surface Area = 49 + 126 = 175 cm²

Answer: Total Surface Area = 175 cm²
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Find the limit, if it exists. (if an answer does not exist, enter dne.) lim (x, y) → (0, 0) x4 − 20y2 x2 + 10y2
Firdavs [7]
Traveling along the x-axis, we have

\displaystyle\lim_{(x,y)\to(0,0)}\frac{x^4-20y^2}{x^2+10y^2}=\lim_{x\to0}\frac{x^4}{x^2}=\lim_{x\to0}x^2=0

On the other hand, along the y-axis we get

\displaystyle\lim_{(x,y)\to(0,0)}\frac{x^4-20y^2}{x^2+10y^2}=\lim_{y\to0}\frac{-20y^2}{10y^2}=\lim_{y\to0}(-2)=-2

Therefore the limit doesn't exist.
5 0
3 years ago
5.Dominic earned $22 doing chores and cleaning the dogs yard. He then received $50 for his birthday! Dominic chose to do more ch
sp2606 [1]

Answer: he needs $21.50

Step-by-step explanation:

You have to add 22+50=75 then add 15 more to 75 which equals 90....after that you have to divide 7 in half and get 3.5 so now you have to add 90+3.5 and get 93.5. Now you must subtract 93.5-65 and get 28.5 and lastly you subtract 50-28.5 to find out how much money if let to buy VANS.

8 0
3 years ago
Please help! I will give Brainliest!
Marina CMI [18]

Answer:

Option. A

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
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nekit [7.7K]
The second car will overtake the first car at about 3 hours and 11 minutes.
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66*3.19 hours=210.54
So about that much time.
I hope I helped out!
6 0
3 years ago
QUICK QUICK QUICK<br> What is the solution set for this inequality? <br><br> - 6x + 30 &gt; - 12
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Answer:

Step-by-step explanation:

x > 7

Step-by-step explanation:

6x - 12 > 30

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6x > 42

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7 0
3 years ago
Read 2 more answers
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