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tester [92]
3 years ago
13

Help me I’m not good at science

Mathematics
1 answer:
harkovskaia [24]3 years ago
4 0

Answer:

I believe this is correct, but I'm not a teacher or anything

Refraction

Refraction

Reflection

Refraction

Reflection

Reflection

Reflection

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HELP PLEASE ! ASAP !
Blizzard [7]

Answer: i think 23x

Step-by-step explanation: i might be incorrect

4 0
3 years ago
Read 2 more answers
For simple linear regression, y = β0 + β1x + u, which one of the following statements is true?
RSB [31]

Answer:

Option a) u is called the "error term". It is the error we make in prediction

Option d) x is called the independent variable because x is independent from y and u.

Step-by-step explanation:

We are given the following information in the question:

y = \beta_0 + \beta_1x + u

where y is the dependent variable, x is the independent variable.

\beta_0: It is the value of y when x is zero, that is y-intercept.

\beta_1: It is the coefficient of x in predicting the dependent variable y.

u is the error term.

  • An error term represents the margin of error.
  • It refers to the sum of the deviations within the regression line, that is the difference between the predicted value and the observed value of y.

Thus, Option A) u is the error term and Option D)  x is called the independent variable because x is independent from y and u are the correct answer.

6 0
3 years ago
Pls help and explain you need to simplify a equation
crimeas [40]
Your answer will be x • 4³ = 64x
When simplifying powers, the rule is that if you’re dividing two powers with the same base (in this case the base is 4), you need to subtract the powers. For example, 3³ ÷ 3² = 3 (which is 3^1).
Using this rule, we can see that 4^8 ÷ 4^5 = 4^(8-5) = 4³.
The x is on top of the fraction and we’re not dividing by an x, so it doesn’t change. Therefore your final answer is 64x.
I hope this helps!
5 0
3 years ago
The playing surfaces of two foosball tables are similar. The ratio of the corresponding side lengths is 10:7 What is the ratio o
mrs_skeptik [129]
100:49 i think.. hope this helps..
3 0
3 years ago
The sum of two numbers is 43.their difference is 19.find both numbers
____ [38]
X+y=43
x-y=19
2x=62
x=31
y=12
Hope this helps!
4 0
3 years ago
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