Answer:
x = -2
Step-by-step explanation:
3x+7=-x-1
4x+7=-1
4x=-8
x=-2
Sorry I don’t know the answer but I need to get answers for this quiz or I’ll fail
I hope you have a bless day
Answer:
120; 10
Step-by-step explanation:
The total weight T of the four mice is simply the sum of each individual weight, assuming the mean value as true:
![T=30+30+30+30 = 120\ grams](https://tex.z-dn.net/?f=T%3D30%2B30%2B30%2B30%20%3D%20120%5C%20grams)
Pythagorean property of standard errors assumes that:
![SD^2(X)+SD^2(Y)=SD^2(X\pm Y)](https://tex.z-dn.net/?f=SD%5E2%28X%29%2BSD%5E2%28Y%29%3DSD%5E2%28X%5Cpm%20Y%29)
Therefore, the standard error of the total weight is:
![SD(T) = \sqrt{5^2+5^2+5^2+5^2}\\ SD(T) = 10\ grams](https://tex.z-dn.net/?f=SD%28T%29%20%3D%20%5Csqrt%7B5%5E2%2B5%5E2%2B5%5E2%2B5%5E2%7D%5C%5C%20SD%28T%29%20%3D%2010%5C%20grams)
The total weight T of the four mice will be 120 grams, give or take 10 grams or so.
1 hour of work would be 11.50/2 = 5.75
The You would need to multiply the number of hours (x) by the unit rate ( 5.75) to find y.
The function rule would be: y = 5.75x
Answer:
8x+6y=3580
x+y=525
Step-by-step explanation:
x+y=525 explains the number of tickets sold, and 8x+6y=3580 includes numeric values of the prices.