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RSB [31]
3 years ago
7

What equation is equivalent to x + 8 = 21

Mathematics
2 answers:
san4es73 [151]3 years ago
7 0

Answer:

x= 13

Step-by-step explanation:

x + 8 = 21

x + 8-8 = 21-8

x = 13

weeeeeb [17]3 years ago
3 0

Answer: Im not sure I understand, do you want the answer to the question?? If you do then the answer is x=13

Step-by-step explanation:

x+8=21

-8     -8

x=13

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Find the simplified quotient of y^2+y/y^2-2y/4y+4/y^2-4y+4
babunello [35]

Answer:

y4 - 8y3 + 8y2 + 2y + 8

 —————————————

           2y2          

Step-by-step explanation:

Step  1  :

            4

Simplify   ——

           y2

Equation at the end of step  1  :

            y       y       4

 (((((y2)+————)-((2•—)•y))+——)-4y)+4

          (y2)      4      y2

Step  2  :

           y

Simplify   —

           4

Equation at the end of step  2  :

            y       y       4

 (((((y2)+————)-((2•—)•y))+——)-4y)+4

          (y2)      4      y2

Step  3  :

            y

Simplify   ——

           y2

Dividing exponential expressions :

3.1    y1 divided by y2 = y(1 - 2) = y(-1) = 1/y1 = 1/y

Equation at the end of step  3  :

          1  y2   4

 (((((y2)+—)-——)+——)-4y)+4

          y  2   y2

plz mark me as brainliest :)

6 0
3 years ago
Determine if the statement is always, sometimes or never true. There are 300 degrees in the sum of the interior angles of a poly
Marrrta [24]

Answer:

Never

Step-by-step explanation:

Using the formula to find the sum of the interior angles, (n-2) * 180, we can work backwards.

300/180 +2 = 11/3 or 3.666. Polygons cannot have decimal sides therefore your answer is never.

6 0
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musickatia [10]

Answer:

18km

Step-by-step explanation:

speed=distance\time taken that's the formula I've used.I hope you'll understand it.

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Verdich [7]

Answer:

7 miles

Step-by-step explanation:

You have total of $20

We subtract $2.50 from it since it is the base charge, so now we have:

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