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e-lub [12.9K]
3 years ago
10

What is y = 11 and x = 19?

Mathematics
1 answer:
denis-greek [22]3 years ago
8 0

ANSWER SHOWN IN THE DOCUMENT ATTACHED TO THIS

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Jack and Jane are married and both work. However, due to their responsibilities at home, they have decided that they do not want
Sergeeva-Olga [200]
By setting up a system of equations we can easily solve this problem. Let's denote Jane's working hours with x and Jack's working hours with y. Since they don't want to work more than 65 hours, the first equation is x+y=65. The second equation is 14x+7y=770. By solving this system of equation \left \{ {{x+y=65} \atop {14x+7y=770}} \right., we find that y=20 hours, which is Jack's maximum working hours. 
6 0
3 years ago
Explain why the exponents cannot be added in the product 12^3 x<br> 11^3.
sergij07 [2.7K]

Answer:

see explanation

Step-by-step explanation:

The exponents can only be added if the bases are the same

Here one base is 12 and the other is 11

So the rule of addition is not applicable.

4 0
2 years ago
Read 2 more answers
What is the missing number<br> 7 x ( ? x 9) = 63
GrogVix [38]
The ? is 1. 

7*(9*1)=63

Hope this helps!!
6 0
3 years ago
3x + 17 + 5x = 7x + 10
Sphinxa [80]

Answer: x=-3

Step-by-step explanation:

First you add 3x+5x cause they are both variables.They equal 8x.

Then you subtract 7x from both sides to get x+17=10

then you subtract 17 from both sides.

you will get x= -3

Hope that helps!

5 0
3 years ago
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Your friend decides to flip a coin repeatedly to analyze whether the probability of a head on each flip is 1/2. He flips the coi
Phoenix [80]

Answer:

Step-by-step explanation:

Given that a friend flips a coin 10 times and observes head 7 times.  So he concludes Probability of head =0.1

This is wrong because

i) Just making 10 trials and coming to conclusion is wrong.  Trials should be large to get accurate estimate

ii) The way he threw the coin may be biased so differrent persons should flip and get results for larger trials

iii) External influences such as air, any other disturbance is not considered here.

To avoid all these sampling fluctuations number of trials should be increased with different situations and times.

6 0
3 years ago
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