Answer:
- 6.2
Step-by-step explanation:
The product of - 2 (3.1) is - 6.2.
Brackets mean to multiply so we have to multiply the - 2 by 3.1 which gives a result of - 6.2.
The answer is (9x^8y^3)/2.
Answer:
C) 
Step-by-step explanation:
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![4 < 3[9] → 4 < 27](https://tex.z-dn.net/?f=4%20%3C%203%5B9%5D%20%E2%86%92%204%20%3C%2027)
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Therefore, this solution is genuine.
I am joyous to assist you anytime.
Answer:
a) y = 0.74x + 18.99; b) 80; c) r = 0.92, r² = 0.85; r² tells us that 85% of the variance in the dependent variable, the final average, is predictable from the independent variable, the first test score.
Step-by-step explanation:
For part a,
We first plot the data using a graphing calculator. We then run a linear regression on the data.
In the form y = ax + b, we get an a value that rounds to 0.74 and a b value that rounds to 18.99. This gives us the equation
y = 0.74x + 18.99.
For part b,
To find the final average of a student who made an 83 on the first test, we substitute 83 in place of x in our regression equation:
y = 0.74(83) + 18.99
y = 61.42 + 18.99 = 80.41
Rounded to the nearest percent, this is 80.
For part c,
The value of r is 0.92. This tells us that the line is a 92% fit for the data.
The value of r² is 0.85. This is the coefficient of determination; it tells us how much of the dependent variable can be predicted from the independent variable.
Answer:
The first step in solving 83.5 ÷ 6.25 is to multiply the divisor and dividend by
[✔ 100
]
sorry idk the answer for the second one :(
Step-by-step explanation:
