Solve the system of equations x - 2y = 2 and 3x - 5y = 9 by writing and solving a matrix equation. Show all your work.
Answers
x - 2y =2................equation 1
3x - 5y =9.............equation 2
find urself third equation frm dis two equations
x = 2+2y...........equation 3
SUB: 3 IN 2
3(2+2y)-5y =9
solve y
6+6y-5y=9
6y-5y=9-6
1y=3
divide both side by 1
therefore Y=3
SUB:Y=3 IN EQUATION 3
x=2+2(3)
x=8
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digits from 0 to 9. Digits cannot be
repeated. Find the probability that
randomly generated card has the
exact number 94213.
Answers
Answer:
Step-by-step explanation:
Given
ID Card of 5 digits
Possibly Digits = {0,1...,9}
Required
Probability that a card has exact number 94213
First, we have o determine the total possible number of ID card numbers
Let the card number be represented by ABCDE
Given that repetition of digits is not allowed;
A can be any of 10 digits
B can any of the remaining 9 digits
C can be any of the remaining 8 digits
D can be any of the remaining 7 digits
E can be any of the remaining 6 digits
Total number of cards = 10 * 9 *8 * 7 * 6
Total = 30240
Provided that the card number is generated at random; each card number has the same probability of
Hence, the probability of having 94213 is
Answers
First lets find out what 25% of 8 is
So in order to find it we multiply 25% by 8
to make things easier we change the 25% to a decimal
25% = 0.25
Now we can multiply.
0.25 x 8 = 2
So since this is a increase we take 8 and add our 25%
25% of 8 = 2
we want an extra 25% with 8
so we add!
8 + 2 = 10
Answer = with a 25% increase 8 becomes 10
doesn't makes sense?
its okay ill explain it you :)
First step we need to multiply 8 and 25%
of course 25% = 0.25
soooo
8 x 0.25 = 2
Second step we add 2 and 8
soooo
8 + 2 = 10
So your final answer is 10
:P
Answers
Answers
Answer: After washing 20 cars together, each team will have raised the same amount in total.
Step-by-step explanation:
Let x represent the number of cars that each each teams will wash for them to raise the same amount in total.
The volleyball team gets $4 per car. In addition, they have already brought in $24 from past fundraisers. This means that the total amount raised by the volleyball team after washing x cars would be
4x + 24
The wrestling team has raised $84 in the past, and they are making $1 per car today. This means that the total amount raised by the wrestling team after washing x cars would be
x + 84
For both amounts to be equal, the number of cars would be
4x + 24 = x + 84
4x - x = 84 - 24
3x = 60
x = 60/3
x = 20
B. -x^2 + 3x + 8
C. x^2 - 3x + 8
D. x^2 + 3x + 8
Answers
4x^2 + 8x + (-11x) + 6 + (-5x^2) + 2
Now combine the like terms.
-x^2 -3x + 8
Your answer is A: -x^2 - 3x + 8
(4x^2 - 5x^2) + (8x - 11x) + 6 + 2
-x^2 - 3x + 6 + 2
-x^2 - 3x + 8
The answer is: -x^2 - 3x + 8.