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TiliK225 [7]
3 years ago
12

What is the value of d?

Mathematics
1 answer:
ANTONII [103]3 years ago
7 0
The value of 'd' would be 80.
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Please help me ASAP yall!!!
ASHA 777 [7]

Answer:

60

Step-by-step explanation:

<C+<D = 180 since they form a straight line

5x+20 +3x = 180

8x+20 = 180

Subtract 20 from each side

8x+20-20 = 180-20

8x = 160

Divide by 8

8x/8 = 160/8

x = 20

We want to find angle D

<D = 3x= 3*20 = 60

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3 years ago
How many planes of symmetry does a cube have?
Anestetic [448]

Answer:

Nine Planes

Step-by-step explanation:

Three planes are parallel to the six faces of the cube. The other six are diagonal.

3 0
3 years ago
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Simplify.<br><br> (2m^3n^2)^5
pashok25 [27]

10m15n10 because you just multiply everything by 5

6 0
3 years ago
-17-5(x+3)=3x plz help
katovenus [111]
  1. Start by distributing the -5 into the x and 3
  2. -17-5x-15=3x
  3. add like terms
  4. -5x-32=3x
  5. add 32 to both sides
  6. -5x=3x+32
  7. subtract 3x from both
  8. -8x=32
  9. divide both by -8
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3 years ago
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Use the figure to find x.
velikii [3]

Answer:

Step-by-step explanation:

The sides of a 30-60-90 triangle are in the ratio 1:√3:2

The side opposite the 30° angle is (12√6)÷2 = 6/√6.

The side opposite the 60° angle is √3×6/√6 = 6/√2 =3√2.

The sides of a 45-45-90 triangle are in the ratio 1:1:√2

The hypotenuse is 3√2, so the side opposite the 45° angle is 3.

x = 3

3 0
3 years ago
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