Answer:
5.5, 9.5
Step-by-step explanation:
Let x and y be the numbers
x+y = 15
x-y = 4
Add the two equations together to eliminate y
x+y = 15
x-y = 4
------------------
2x = 19
Divide by 2
2x/2 =19/2
x = 9.5
Now find y
x+y = 15
9.5+y = 15
Subtract 9.5
x = 15-9.5
x =5.5
Answer:
x = 0
y = 3
Explanation:
There are multiple ways to solve systems of equations. For this particular example, you can simply set them equal to each other because they are both equal to y and y = y, so therefore the equations equal each other.
so,
2x + 3 = -3x + 3
then solve for x!
add 3x to both sides: 5x + 3 = 3
subtract 3 from both sides: 5x = 0
divide by 5: x = 0
then to find y, plug the 0 back into either equation.
y = 2(0) + 3
y = 3
so, x = 0 and y = 3
i hope this helps!! :)
Answer:Dependent
Step-by-step explanation: It is dependent because the probability could change depending on which marble is pulled
Answer:
1. h(x) = 2ˣ-7 :
2ˣ - 7 = 131,065
2^x = 131,072
x = 17
2. k(x) = -(x/2) - 1 = 17
x/2 = -18
x = -36
3. g(x) = -(x-2)² = -36
x - 2 = 6
x = 8
4. f(x) = √x = 8
x = 64
h(k(g(f(64)))) = 131,065
Step-by-step explanation:
I hope this help
To solve this you need to make all of the percentages for the scores go back 2 decimals. For example: 82 --> 0.82
Next you multiply the decimal by the percent on the test.
0.90 × 75 = 67.5
0.95 × 10 = 9.5
0.82 × 15 = 12.3
Finally you add all of them up and get an answer.
67.5 + 9.5 + 12.3 = 89.3
Samantha achieved a 89.3% on her test.
Please make me the Brainliest!