Answer:
<h2>The student who got 72, that's the right one.</h2>
Step-by-step explanation:
The given statement can be translated to
Where 
is the number.
Notice that "twice" is a general product that must cover the whole sum.
If 
, then we solve
Therefore, the student who got 72, that's the right one.
The solution to the system of equations are (2, 5).
Solution:
The system of equations are
x + y = 7 – – – – (1)
2x – y = –1 – – – – (2)
To find x from equation (1):
x + y = 7
Subtract y from both sides of the equation, we get
⇒ x + y – y = 7 – y
⇒ x = 7 – y – – – (3)
Substitute (3) in (2) we get,
2(7 – y) – y = –1
14 – 2y – y = –1
14 – 3y = –1
Subtract 14 from both sides,
–3y = –15
Divide by –5 on both sides,
y = 5
Substitute y = 5 in equation (3)
x = 7 – 5
x = 2
The solution to the system of equations are (2, 5).
Answer:
0.9538
Step-by-step explanation:
The computation of the proportion of variation in labor hours is explained by the number of cubic feet moved is shown below:
Here the R^2 coefficient of determination, would be determined and applied the same
R^2 = 1 - SSE ÷ SST
= 1 - 123.97 ÷ 2685.9
= 0.9538
A rectangle’s area is width x height. So plug in what you know and solve. 212.5 = w x 17. To solve 212.5/17= 12.5. So the width must be 12.5.
