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Lunna [17]
3 years ago
15

A dishwasher is priced at $475. There are two options offered to reduce the price: either a 15% discount off the price or a reba

te of $75. Which is the better choice, and what is the extra amount saved?
Mathematics
1 answer:
Andrej [43]3 years ago
6 0

Answer: The $75 rebate.

Step-by-step explanation: When you have a question that deals in percentages, you would place a decimal point in the second point back--- Or rather, it would be 1.00 at 100% and above, and .05 for 5%. You would be getting $71.25 discount with the 15%, while you would be getting $3.75 more with the $75 rebate.

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The units digit of a perfect square is 6. What are the possible values of the tens digit?
disa [49]
<span>1, 3, 5, 7, 9 are the possible digits for the tens digit. Notice they are all odd.

My reasoning:
</span><span>
When you multiply any 2 numbers together, the last digit of the result will be the last digit of the product of the original last digits (ex. 12*7 = 84:  7*2 = 14 : 4 is last digit)
</span>
The last TWO digits of the result will be the same as the last 2 digits of the product of just the last two digits. (ex, 1422*234 = 332,748:  22*48 = 748 : 48 are last two digits )

If is a perfect square ends in 6,  the last digit squared must end in 6 as well.

The only single digit numbers squared that end in 6 are:    4*4=16   and   6*6=36  

They are the only 2 so the number that is being squared must end in 4 or 6

Let the second last digit be X.  X can be any digit.

So the last 2 digits of our number that is being squared are either   X6   or    X4

That is, the last 2 digits of the number are either (10X+6)   or   (10X+4),

this will result in X always being an odd number.

3 0
3 years ago
Which expressions are a factor of -48xyz - 24xy + 40xyz? A) f B) 24 c) 3x d) 8y e) 2xy f)6xy G) xyz (Select all that applys)
Lera25 [3.4K]
The expression that are a factor  are A E and G
8 0
3 years ago
If F(x) = 9x, which of the following is the inverse of F(x)?
ratelena [41]

Answer:

Should be x/9

Step-by-step explanation:

8 0
3 years ago
NEED HELP ASAP!!!!!  What is theoretical probability and experimental probability?
SVETLANKA909090 [29]

On the basis of mathematical theory, the chance of occurrence of any event is called theoretical probability.

For example if we toss a coin then the probability of a head and a tail is half half i.e 0.5.

But the probability  calculated by repeated experiments and examine the outcomes are called experimental probability.

For example if we toss a coin 20 times and got 9 times head and 11 times head then the probabilities are given by

P(\text{head})= \frac{9}{20} \\&#10;\\&#10;P(\text{head})= \frac{11}{20}

These probabilities are different what we got in case of theoretical probabilities.


6 0
4 years ago
Read 2 more answers
Write a function g whose graph represents a reflection in the y-axis of the graph of f(x)=|2x−1|+3
ikadub [295]

Answer:

Step-by-step explanation:

f(x) = |2x−1|+3, reflected over the y-axis becomes

g(x) = |-2x−1|+3

We needed the point (0.5, 3) to go to the other side of the y-axis to get the point (-0.5, 3).

4 0
3 years ago
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