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Sauron [17]
2 years ago
10

What is the surface area of the cube.A. 409 cm²B. 2400 cm²C. 2004 cm²D. 40 cm²​

Mathematics
1 answer:
larisa [96]2 years ago
4 0
  • Side=a=20cm

Surface area

  • 6a^2
  • 6(20)^2
  • 400(6)
  • 2400cm^2
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PLZ HELP SCALE FACTOR TRIANGLE<br><br> A. 10.5 cm<br> B. 31.5 cm<br> C. 63 cm<br> D. 189 cm
Anarel [89]

If two similar triangles have sides in the ratio a : b, then their areas are in the ratio a² : b².

We have the ratio:

54:18=\dfrac{54}{18}=3:1

Area of the smaler triangle = x

Area of the larger triangle = 567 cm²

Therefore we have the equation:

567:x=3^2:1^2\\\\\dfrac{567}{x}=\dfrac{9}{1}\qquad|\text{cross multiply}\\\\9x=567\qquad|\text{divide both sides by 9}\\\\x=63

<h3>Answer: C. 63 cm²</h3>
3 0
2 years ago
How can i get answer 5 for -10 - (+5) ?​
timama [110]

Answer:

- 10 - (-20 + 5)

Step-by-step explanation:

- 10 - (-20 + 5)

- 10 - (-15) = -10 + 15

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have a nice day and mark me brainliest! :)

4 0
3 years ago
From the set {6, 7, 11}, use substitution to determine which value of x makes the equation true.
kotykmax [81]
11 if you multiply 11 by both the number and and the variable you’ll get 11x-55=66. Add 55 to each side which will give you 121 then divide that by 11
3 0
3 years ago
Read 2 more answers
The solution of a+b&gt;−4 is a&gt;−9. What is the value of b?
evablogger [386]
A><span><span>−b</span>−<span>4
Hope this helps. c:</span></span>
5 0
3 years ago
Compare this: |a| and 0
slavikrds [6]

Answer:

when they are pronounce /a/ does not need any force while /o/ w need more force

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