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RSB [31]
3 years ago
13

Please help don't answer if you don't know it thank you.

Mathematics
2 answers:
Aleks04 [339]3 years ago
8 0
The first answer would be angle one and angle two because complimentary angles add up to 90*. 

The second answer would be 43* because it is the same angle as angle one. (I cant quite remember what that is called, sorry)
irinina [24]3 years ago
5 0
1. B (1> and 2>)

2. 43
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8. Draw a number line and place the following it 4/8 0.25 3/4 0.5 0 1/2 1
Andru [333]
The correct order is: 0.25, 4/8=0.5 so they go above each other, 3/4
5 0
3 years ago
Please help, i need the answer soon, ill give brainliest :)
MrRa [10]

Answer:

If I could get the values of a, b, and c i'd solve the whole thing.

Step-by-step explanation:

8a + 9b divided by 8a - 9b =

9b + 5c divided by 18b - 10c =

5c + 8a divided by 15c - 24a

5 0
3 years ago
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
Look carefully at the triangle solve for x ​
luda_lava [24]

The 3 inside angles of a triangle need to equal 180 degrees. Looking at the larger outside triangle the top angle is 30 and the lower right angle is 60.

30 + 60 = 90

The lower left angle needs to be 180 - 90 = 90 degrees.

That angle is split into two angles with one given as 70.

This means X needs to be 90 - 70 = 20 degrees.

x = 20

3 0
3 years ago
I'm not good with ordering fractions from smallest to largest. Can help anyone help with this problem?
ziro4ka [17]
5/8,4/6,3/4,1/2 this is the answer without simplifying
3 0
3 years ago
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