the error is that they didnt add the exponets
<span>If y varies directly with x, the formula of the equation is y=ax, where a is a constant.
y=ax
(21)=a(7)
a=3
y=ax
y=(3)(-1.66)
y=-4.98, x=-1.66
If y varies inversely with x, the formula of the equation is y=a/x, where a is a constant
y=a/x
9=a/2.5
a=22.5
y=22.5/x
y=22.5/-0.6
y=-37.5
I hope this helped! =)
I hope you didn't mind but I got this from a website called: answers.yahoo.com but I got your answer.
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Answer:
<u>The answer to your question: </u><u><em>Similar </em></u>
Step-by-step explanatioN
i picked this answer because they have one comparison- same shape
what is comparison- the same features in something between 2 objects or more
this also means similar
so it is similar
Answer:
D
Step-by-step explanation:
using the rule of logarithms
log x - log y ⇔ log (
)
then
(
) =
a -
d
Answer: 11 and 24
Step-by-step explanation:
Given
There are 35- 50 cents and 20 cents coins
The total of them is 10.3 euros
Suppose no of 50 cents coins is x and 20 cents is y
so we can write

Also,

Solving (i) and (ii) we get

There are 11 fifty cent and 24 twenty cents coins