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podryga [215]
3 years ago
8

Would be great if someone can help with this.

Mathematics
1 answer:
Neporo4naja [7]3 years ago
8 0

Answer:

144

Step-by-step explanation:

In a regular decagon like the one shown in the picture each angle is 144 degrees and it all adds up to 1,440. If you want proof search up "angle of a decagon"

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Can someone help pls?
adell [148]

-2x^3-x^2-6x-7

I don't really know what else

6 0
3 years ago
What is the value of x? Show your work each step of the way. No work means NO points!
Brrunno [24]

Answer:

The value of x is -10.

Step-by-step explanation:

Given : Expression 3x-8=\frac{8x+4}{2}

To find : What is the value of x?

Solution :

Step 1 - Write the expression,

3x-8=\frac{8x+4}{2}

Step 2 - Cross multiply,

6x-16=8x+4

Step 3 - Take like terms together,

6x-8x=4+16

Step 4 - Solve,

-2x=20

x=-\frac{20}{2}

x=-10

Therefore, The value of x is -10.

5 0
3 years ago
Solve. You may use a calculator and round your answer to the nearest tenth of a unit if necessary.
LuckyWell [14K]

192 cm

Step-by-step explanation:

Each bounce is 70% of the previous bounce so the fourth bounce is going to be 274 cm and the fifth is going to be 192 cm.

5 0
3 years ago
Why equals 3/4 X -12 and why equals negative 4X - 31
Helga [31]

Answer:

  (x, y) = (-4, -15)

Step-by-step explanation:

Perhaps you want the solution to ...

  y = 3/4x -12

  y = -4x -31

Equating the two expressions for y gives ...

  3/4x -12 = -4x -31

  3/4x = -4x -19 . . . . . add 12

  3x = -16x -76 . . . . . multiply by 4

  19x = -76 . . . . . . . . . add 16x

  x = -76/19 = -4 . . . . divide by 19

  y = (3/4)(-4) -12 = -15 . . . . use the first equation to find y

The solution to this system of equations is ...

  (x, y) = (-4, -15)

8 0
4 years ago
Brady rode his bike 70 miles in 4 hours. He rode at an average speed of 17 mph for t hours and alah
telo118 [61]

Answer:66 slower speed

Step-by-step explanation:

6 0
2 years ago
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