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Digiron [165]
3 years ago
13

Please can someone tell me whether my answer to the question is right? The topic is simultaneous equations.

Mathematics
2 answers:
Pani-rosa [81]3 years ago
8 0
You can easily check your own solutions to simultaneous equation problems.  You've found values for x and y.  Choose either of the original two equations and substitute these x- and y-values into it.  Is the resulting equation then true?  If so, you have a solution.  If not, you don't.
ELEN [110]3 years ago
7 0
X should equal -13.33. Y is correct, 13.33
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easy question... if someone starts with 100$ and adds 50 each week, how much will they have after 1 year
dimulka [17.4K]

Answer:

They would have about $2500 after one year

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Parking spaces at a business school are arranged by a random monthly lottery. there are 3 spaces for every 10 students who want
Alexus [3.1K]

27.034%  
Let's define the function P(x) for the probability of getting a parking space exactly x times over a 9 month period. it would be: 
P(x) = (0.3^x)(0.7^(9-x))*9!/(x!(9-x)!)  
Let me explain the above. The raising of (0.3^x)(0.7^(9-x)) is the probability of getting exactly x successes and 9-x failures. Then we shuffle them in the 9! possible arrangements. But since we can't tell the differences between successes, we divide by the x! different ways of arranging the successes. And since we can't distinguish between the different failures, we divide by the (9-x)! different ways of arranging those failures as well. So P(4) = 0.171532242 meaning that there's a 17.153% chance of getting a parking space exactly 4 times. 
Now all we need to do is calculate the sum of P(x) for x ranging from 4 to 9.

So
 P(4) = 0.171532242
 P(5) = 0.073513818
 P(6) = 0.021003948
 P(7) = 0.003857868
 P(8) = 0.000413343
 P(9) = 0.000019683
  And
 0.171532242 + 0.073513818 + 0.021003948 + 0.003857868 + 0.000413343
+ 0.000019683 = 0.270340902 
 So the probability of getting a parking space at least four out of the nine months is 27.034%
5 0
3 years ago
On average 70% of customers order vanilla yogurt, and 30% order chocolate yogurt. In the following random number table, numbers
monitta

Answer:

200

Step-by-step explanation:

7 0
3 years ago
Express in numbers six and three hundredths
Afina-wow [57]

Answer:

6.03

Step-by-step explanation:

'6' would be a whole number. When stating decimals, you would say the whole numbers before 'and'.

For example: 5.6 would be 'five and six tenths'. Note that five is before 'and'.

'Three hundredths' would be .03.

Therefore:

"Six and three hundredths" would be '6.03'.

4 0
3 years ago
What is the quotient (x3 + 6x2 + 11x + 6) ÷ (x2 + 4x + 3)?<br> x + 2<br> x – 2<br> x + 10<br> x + 6
ratelena [41]
Hello,

Answer A

x²+4x+3=(x+3)(x+1)

x^3+6x²+11x+6=(x+1)(x²+5x+6)

x²+5x+6=(x+2)(x+3)

so

x^3+6x²+11x+6=(x+1)(x+2)(x+3) (Horner's method)


4 0
3 years ago
Read 2 more answers
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