Answer:
238
Step-by-step explanation
(10*10)+(10*7)+(4*10)+(4*7)
You have to use let statements:
Let x = the number of dimes
Let x+6 = the number of nickles
We know that nickles are represented as $0.05 and dimes $0.10...
Together they make $2.25 right? So you have to add them.
0.05(x+6) + 0.10(x) = 2.25 => This is the equation the problem is asking for.
If they ask you how many nickels and dimes does John have in this pocket, then you have to solve for x, like this:
0.05x + 0.3 + 0.10x = 2.25 In this step you apply the ditributive property.
0.15x + 0.3 = 2.25 In this step you combine like terms
0.15x = 2.25 - 0.3 In this step you moved to +0.3 to the other side, but remember to switch the sign!
0.15x = 1.95 In this step you subtract 2.25 and 0.3
x = (1.95) / (0.15) In this step you divide 0.15 in the right because in the left side of the equals sign it was multiplying. You get x by itslef.
x = 13 Latly, you divide and you get 13 as an answer
Now that the value of x is 13. You plug this number into the let statements.
We had:
x and x+6 which would be
x = 13
x+6 = 13+6 = 19
Which means that John has 13 dimes and 19 nickels in his pocket.
Answer:
$200; $800
Step-by-step explanation:
100 x8 =800
100 x10=1000
1000-800= $200 (what you earn)
the money that you pay back is the return on investment so $800
Answer:
With the info I have, I can't make a good response, but I can try
Step-by-step explanation:
So I'm trying to figure out what you mean, but I'll try my best to help you out,
(9^9)x2/2
the "/2" cancels out the "x2" so essentianly you only have to answer 9 to the power of 9 (9^9) which is 387420489
I tried writing this out in many other ways, and I always got that answer, so I'm assuming this is the right answer
Answer:
Option A. $17.28
Step-by-step explanation:
we have the expression for the cost
In this problem we have
substitute the given values in the expression to obtain the cost