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Alexeev081 [22]
3 years ago
9

Determine the domain and range for the function. f (x) = x + 7

Mathematics
1 answer:
NISA [10]3 years ago
8 0

Answer:

Domain: (−∞,∞)

Range: (−∞,∞)

Step-by-step explanation:

trust me

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There are 112 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filling up rows of seat
aalyn [17]
Now, to find how many people are not there, all you have to do is subtract the amount of seats and the people there.
112- 70= 42
Now since there are 7 seats per row and 42 is divisible by 7, you can divide 42 by 7.
42÷7= 6
So, 6 rows were empty.
3 0
3 years ago
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5. Draw the number line graph of -3.
lana [24]

Answer:

9, 7,-8.3,>

Step-by-step explanation:

5)-3 is marked exactly 3 units to the left of origin 0.

(since negative sign we mark on left of 0)

6) |-9| = absolute value of 9 = 9

7) y-11=-4

Add 11 to both the sides

WE get y =7 is the solution

8) a + b when a = 2.5 and b = -10.8.

= 2.5+(-10.8) = -(10.8-2.5) = -8.3

9) 0.4 is positive hence lies to the right of origin.

Partition the space between 0 and 1 into 10 equal subparts and mark 4th subdivision to get 0.4

10) -1.8>-2.5


4 0
3 years ago
Which of the following functions has a vertex of (-4,3) and a line of symmetry of x=-4​
Bogdan [553]
2(x+4)^2+4




That is the answer!
8 0
4 years ago
An economist conducted a study of the possible association between weekly income and weekly grocery expenditures. The particular
kolezko [41]

Answer:

42.1% of variation in the response is explained by the regression line

Step-by-step explanation:

Correlation coefficient is a measure which tells us that how strongly are two variables under study are linearly related to each other i.e correlation coefficient gives the strength of linear association between the variables.

If the magnitude of correlation coefficient is closer to 1, it indicates a strong linear relationship. If the magnitude of correlation coefficient is closer to 0, it indicates a weak linear relationship.

There is another variable known as "Coefficient of Determination", which is equal to square of Correlation Coefficient. Coefficient of Determination tells us that what percentage of variation in the response of the study can be explained by the regression line.

This means, for this question we need to calculate the Coefficient of Determination.

Correlation coefficient = r = 0.649

Coefficient of Determination = R = r² = (0.649)²= 0.421 = 42.1 %

This means that 42.1% of variation in the response is explained by the regression line.

5 0
3 years ago
Question shown in image
Lina20 [59]

Answer:

∠e and ∠a

Step-by-step explanation:

  • ∠d is congruent to ∠e by the rule Corresponding Angles.
  • Therefore, ∠e is congruent to ∠a by the rule Vertical Angles.
  • This means that ∠d is congruent to ∠a by the rule Alternate Interior Angles.

-Chetan K

4 0
3 years ago
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