Answer:
10 SENIORS
Step-by-step explanation:
x=# of seniors
y=# of juniors
x+y=23, x=2y-7
- plug the value of x in the second equation into the first
- (2y-7)+y=23
- Remove parentheses
- 2y-7+y=23
- Combine like terms
- 3y-7=23
- Add 7 to BOTH sides
- 3y=30
- divide BOTH sides by 3
- 3y/3=30/3
- y=10
- There are 10 juniors in the class
- FINAL STEPS
- Plug y (which is 10) into the first equation
- x+y=23
- x+10=23
- subtract 10 from BOTH sides
- x=13
- Since X equals the number of seniors, there are 10 seniors in the class
Answer:2x × 3 (Don't solve it cause you cant)
Step-by-step explanation:For the first one in parentheses you can't do it because their has to be an x with the two so you can do the problem.
For the next one you can do it. So for every letter that doesn't have a number their is always an invisible 1 in front of it. So it's 1x to the second power + 1x-1 so 1×1 is 1. 1x+1x=2x and the 2 and the one that doesn't have a letter equals 3. So the answer is
2x × 3 Hopefully this is correct and helps you out!
Are you really having trouble counting the blocks ? It shouldn't be
a problem, because you can <em>see</em> all of them in the picture. There are
no blocks hiding behind other ones.
There are 5 blocks in the bottom row, sitting on the table, and
4 more stacked on top of them . . . total of 9 blocks.
Because the 2 sides of the triangle are identical, both are labeled as 7, then the 2 bottom angles, J & L are the same.
J = 25, so L also equals 25 degrees.
The answer is C.
X=292.6
Step 1: distribute 3 through parentheses
3x-126=752
Step 2: move the constant to the right and change it sign
3x= 752+126
Step 3: add the numbers
3x= 878
Step 4: divide both sides by three
X= 878/3 or 292.6
