U could use Photomath for that
Answer:
{x = 7 ,y = 5
Step-by-step explanation:
Solve the following system:
{3 x + 3 y = 36 | (equation 1)
8 x - 5 y = 31 | (equation 2)
Swap equation 1 with equation 2:
{8 x - 5 y = 31 | (equation 1)
3 x + 3 y = 36 | (equation 2)
Subtract 3/8 × (equation 1) from equation 2:
{8 x - 5 y = 31 | (equation 1)
0 x+(39 y)/8 = 195/8 | (equation 2)
Multiply equation 2 by 8/39:
{8 x - 5 y = 31 | (equation 1)
0 x+y = 5 | (equation 2)
Add 5 × (equation 2) to equation 1:
{8 x+0 y = 56 | (equation 1)
0 x+y = 5 | (equation 2)
Divide equation 1 by 8:
{x+0 y = 7 | (equation 1)
0 x+y = 5 | (equation 2)
Collect results:
Answer: {x = 7 ,y = 5
To substract the numbers shown by the method known as the "Arrow way" you must rewrite 430 and substract the hundredths (In this case, it is 200). Then you have to substract the tenths to that result (Result obtained-30). This explanation is shown below:
430 --( -200 )---> 230 --( -30 )---> 200
Therefore, the solution of the mathematical operation 430-230, using the arrow way, is: 200
Answer:
2,500 pounds
Step-by-step explanation:
one ton = 2000 pounds
1.25*2000= 2,500
Answer:
Cohen's d : 1.00
Step-by-step explanation:
We know that M₁ = 18, and M₂ = 14. Given that the pooled variance for the these two samples are 16, S²Pooled = 16, and therefore S - pooled = 4.
The formula to solve for the value of Cohen's d is as follows,
d = M₁ - M₂ / S - pooled,
d = 18 - 14 / 4 = 4 / 4 = 1
Therefore the value of Cohen's d = 1
