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storchak [24]
3 years ago
5

If you owe your friend $3 and you have $15, which expression would help you find out how much money you would have left?

Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
7 0
The answer is B because your subtracting it
8090 [49]3 years ago
3 0

Answer:

Both of these

Step-by-step explanation:

15 - 3 is 12

15 + (-3) is also 12

You might be interested in
What is 79.35 divided by 5
liraira [26]
79.35 divided by 5 equals: <u><em>15.87</em></u>
<em>~~~~~~~~~~~~~~~~~~~~~~~~~~~</em>
To check:
    243
    15.87
<span><u>  x  5.00</u>
</span>     0000
<u>    0000</u>
 79.35
<em>~~~~~~~~~~~~~~~~~~~~~~~~~~~~</em>
Hope this helped! :)
<span><em>Any more questions, please ask! :)</em></span>


5 0
3 years ago
Q15. Ken earned x dollars at his part-time job on Friday. His wife earned $12 more
Vladimir79 [104]

Answer: Ken Earned 81$

Step-by-step explanation: Subtract 12 from the total, then divide by 2 because his wife earns double than him, plus 12$ more.

Have a good day :)

3 0
1 year ago
The store allowed 85 people in 5 hours .. how many people were allowed to enter per hour?
ale4655 [162]

Answer:

17 people per hour

Step-by-step explanation:

85/5

3 0
3 years ago
Michael is running for president. The proportion of voters who favor Michael is 0.8. A random sample of 100 voters is taken.
Anton [14]

Answer:

Michael is running for president. The proportion of voters who favor him is 0.3. A simple random sample of 100 voters is taken.

a)

What is the expected value :: n*p = 100*0.8 = 80

standard deviation:: sqrt(n*p*q) = sqrt(80*0.2) = 16

where q is proportion of voters who do not favor Michael. (q=0.2)

and shape of the sampling distribution is binomial distribution  which is  approximately a  bell shaped.

-------------------------

what is the probability that the number of voters in the sample who will not favor Michael will be more than 16

P(X < 16.0) = P((x - 20) / 4.0) < (16.0 - 20) / 4.0) = P(Z < -1.00) = .1587        

P(X > 16.0) = 1 - 0.1587 = 0.8413

5 0
3 years ago
Pls help me first get 10 you know
Luba_88 [7]

Option D, 63 cm

Explanation:

The scale of model is of local park  is

This means that each dimension of the model is 21 times smaller than the actual park (to be developed in future)

Given -

Depth of the pond  centi meter

Depth of the real pond will be 21 times of the depth of the model.

Thus , real pond's depth is equal to

cm

Hence, option D is correct

7 0
2 years ago
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