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kompoz [17]
3 years ago
8

How to solve this equation

Mathematics
1 answer:
8_murik_8 [283]3 years ago
3 0

\bold{Hey\ there!}

  • \bold{x^2=81}
  • \bold{Take\ your\ particular\ root\ (square\ root\ preferably)}
  • \rightarrow{\bold{x=\pm\sqrt{81}}}
  • \bold{\frac{\sqrt{81}}{9}=9}
  • \boxed{\boxed{\bold{Answer:x\rightarrow9\ or\ x\rightarrow-9}}}\checkmark

\bold{Good\ luck\ on\ your\ assignment\ \& \ enjoy\ your\ day!}

~\frak{LoveYourselfFirst:)}

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IRINA_888 [86]

The ratio that is not equivalent is B. 7:15

The reason why it's not equivalent because for the other ratios:

1:5 could be turned into 2:10 by multiplying 1 and 5 by 2.

4:20 could turn into 2:10 by dividing both numbers by 2.

And 8:40 could be divided by 4 to get 2:10.

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5

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1. according to the condition

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3. when the both prices are reduced the ratio is

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4. using the equations written in steps 2&3 it is possible to make up the system of the two equations:

\left \{ {{\frac{x+20}{y+20}=\frac{5}{2}  } \atop {\frac{x-25}{y-25}= \frac{5}{1} }} \right.

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5. ration x:y=5.

7 0
3 years ago
A varies inversely with B.<br> When A is 0.25, B is 4.<br> Find the value of B when A is 5.
andrew-mc [135]

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7 0
2 years ago
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kirza4 [7]
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6 0
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olga_2 [115]

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5 0
3 years ago
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