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SCORPION-xisa [38]
3 years ago
13

Solve for X. Please explain if possible. -8 1/4x - 68 = -6.25x - 58

Mathematics
1 answer:
AleksandrR [38]3 years ago
8 0

Answer:

X=-5

Step-by-step explanation:

Start by isolating the variable to one side. So from here we would add 68 to both sides. we will be left with -8 1/4x = -6.25x+10. Then add 6,25 to both sides to cancel on and get -2x=10. Divide both sides by -2 to get x=-5

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X puᴉɟ oʇ ǝʌɐɥ noʎ<br><br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%7B%7D%5E%7B2%7D%20%7D%7B5%20%7B%7D%5E%7B2%7D%20%7D
Law Incorporation [45]

Hello there! The value of x is 20 or -20

"20 or - 20" is one answer so you are supposed to answer 20 or -20, not choose only one.

Step-by-step explanation:

\large{ \frac{ {x}^{2} }{ {5}^{2} }  =  {4}^{2} }

First, we simplify 5² and 4²

\large{ \frac{ {x}^{2} }{25}  = 16}

Multiply the whole equation by 25 to get rid of the denominator.

\large{ \frac{ {x}^{2} }{25} (25) = 16(25)} \\  \large{ {x}^{2}  = 400}

Square both sides and solve the equation.

\large{ \sqrt{ {x}^{2} }  =  \pm{ \sqrt{400} }}

Also don't forget to write "plus or minus" symbol when we are solving a quadratic equation by squaring both sides.

\large{x = \pm{20}}

4 0
3 years ago
Mhanifa can you please help me with this? It’s due ASAP! Look at the picture attached. I will mark brainliest!
WITCHER [35]

Answer:

  • 8) 76°
  • 9) 88°

Step-by-step explanation:

  • <em>Sum of exterior angles of any polygon is 360°</em>
<h3>Exercise 8</h3>

<u>Sum of given angles:</u>

  • 2x + 60° + 64° + 36° + 48° = 360°
  • 2x + 208° = 360°
  • 2x = 360° - 208°
  • 2x = 152°
  • x = 76°
<h3>Exercise 9</h3>

<u>Sum of given angles:</u>

  • x + 90° + 109°+ 73° = 360°
  • x + 272° = 360°
  • x = 360° - 272°
  • x = 88°

4 0
3 years ago
Read 2 more answers
Someone plz help this is due today
-Dominant- [34]

3x+5x+1=17

x=2

y=5•2+1

y=1

(x, y)=(2, 11)

3x+2(4x+5)=43

x=3

y=4•3+5

y=17

(x, y)=(3, 17)

I think I did it right and I hope I helped you

3 0
2 years ago
200x50 mathematics problem
Neporo4naja [7]
200*50=10,000.
2*5=10
20*50=1000
200*50=10000
8 0
3 years ago
Read 2 more answers
(-8)^-2 / 3^-4 simplify the expression. Write your answer using only positiv exponents.
spin [16.1K]

Answer:

3^4 / 8^2 or 81/64

Step-by-step explanation:

(-8)^-2 / 3^-4 =

= 3^4 / (-8)^2

= 3^4 / 8^2

= 81/64

4 0
3 years ago
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