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Evgen [1.6K]
2 years ago
9

If two lines are perpendicular, which statement must be true?

Mathematics
1 answer:
Kryger [21]2 years ago
8 0

Answer:

Their slopes are opposites

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Complete the following sentence. The coefficient of determination between the dependent variable, TEST SCORE, and the independen
amm1812

Answer: a. variation in the variable, HOURS SPENT STUDYING explains 43% of the variation in the variable. TEST SCORE

Step-by-step explanation:

The coefficient of determination is denoted by R square is the proportion of the variance in the dependent variable that is predictable from the independent variable.

Given:  dependent variable = TEST SCORE

independent variable = HOURS SPENT STUDYING

coefficient of determination = 0.43

That means variation in the variable, HOURS SPENT STUDYING explains 43% of the variation in the variable. TEST SCORE.

Hence, the correct option is a.

8 0
3 years ago
What is the average<br> number of 4th graders per<br> class from the table above?
melisa1 [442]

Answer:

29

Step-by-step explanation:

You need to find the average number of students

Add up all the students

27+31+28+33+26

145

Divide by the number of classes

145/5

29

The average is 29

6 0
3 years ago
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At a car repair shop, the cost of a repair depends on the time the mechanic works. Which of the following shows this idea expres
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Cost(time) is the answer for the question 

8 0
3 years ago
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The Zonda Information and Telephone Company (ZI&amp;T) calculates a customer’s total monthly cell phone
Olenka [21]

Answer:

The answer of the following question is m = \frac{C - b - bt}{r + rt}.

Solution:

C = (b + rm)(1 + t),

C = b + rm + bt + rmt

C = b + bt + rm + rmt

C - b - bt = m (r + rt)

\frac{C - b - bt}{r + rt} = m

t\neq -1,  

r\neq 0

6 0
3 years ago
What is the midpoint of 16 1/4 above sea level and 12 3/4 below sea level
anzhelika [568]

Answer: 1 3/4 above sea level

the midpoint of 16 1/4 above sea level and 12 3/4 below sea level is 1 3/4 above sea level

Step-by-step explanation:

I made a line graph and brought each side closer and closer until i stopped at the middle point

7 0
3 years ago
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