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mafiozo [28]
2 years ago
7

Can someone check this please!?

Mathematics
1 answer:
Ymorist [56]2 years ago
4 0

Answer:

Yes it is correct

Step-by-step explanation:

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Are the ratios 20:9 and 2:1 equivalent?<br> yes or no
marusya05 [52]

Answer:

No

Step-by-step explanation:

Do they have common factors?

No which is why they are not able to be simplified further

so no

5 0
2 years ago
Read 2 more answers
4. What number is the opposite of -3/5?*
Arlecino [84]

Answer:

the opposite of negative 3/5 [-3/5] is positive 3/5 [3/5].

Good luck.

4 0
2 years ago
What does it mean when a greater than sign is underlined?
arsen [322]
When a sign has the underline, it means it is also equal to. 
for example,
x \geq 10
so the solution for "x" is greater than or equal to 10

hope this helps!
3 0
3 years ago
What is 20.35 divided by 3 in the standard algorithm
liberstina [14]
20.35 divided by 3 equals 6 (:
4 0
3 years ago
Read 2 more answers
Hey!
noname [10]

Answer:

A. Cylinder + cone

<u>Volume is the sum of volumes:</u>

  • V = Vcon + Vcyl = 1/3πr²h₁ + πr²h₂
  • V = 1/3π*9²*12 + π*9²*120 = 31554.2 cm³

<u>Surface area of cone:</u>

  • A = A=πr(r+√(h₁²+r²)) = π*9(9 + √(9²+12²)) = 678.6 cm²

<u>Surface area of cylinder minus bases:</u>

  • A = 2πrh₂ = 2π*9*120 = 6785.8 cm²

<u>Total surface area:</u>

  • 678.6 + 6785.8 = 7464.4 cm²

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

B. Cube+ pyramid

<u>Volume:</u>

  • V = a³ + (1/3)a²h = a³ + (1/3)a²√(l²-(a/2)²)
  • V = 8³ + (1/3)8²√(10²-4²) = 707.5 cm³

<u>Surface area of pyramid:</u>

  • A = a² + 2al = 8² + 2*8*10 = 224 cm²

<u>Surface area of cube minus bases:</u>

  • A = 4a² = 4(8²) = 256 cm²

<u>Total surface area:</u>

  • A = 224 + 256 = 480 cm²
5 0
3 years ago
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