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Gekata [30.6K]
2 years ago
11

How many constants are in the following expression? 7x + 4y - 5 + 4x Help

Mathematics
2 answers:
olya-2409 [2.1K]2 years ago
5 0

Answer:

There is only 1 constant

Step-by-step explanation:

the constant is -5 because it's alone without any variables

ad-work [718]2 years ago
3 0

Answer:

1

Step-by-step explanation:

-5 is a constant because its a number on its own without a variable

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Use the given information to write an equation and solve the problem.<br> (28-31 in the picture)
tia_tia [17]

Answer:

28. 120 degrees

29. 30 degrees

30. 56 degrees & 124 degrees

31. 72 degrees, 108 degrees, and 18 degrees

Step-by-step explanation:

We assign variable x for the answer we are looking for (28-29).

28.

Supplement means x + y = 180 degrees. We also know x = 2y. Substitution gives us 3y = 180 degrees, so y = 60 degrees and x = 120 degrees.

29.

Complement means x + y = 90 degrees. We are given 2x = y. Substitution brings us 3x = 90 degrees, x = 30 degrees.

30.

Supplement means x + y = 180 degrees. We are told that y = 2x + 12, so we substitute. This gives 3x + 12 = 180 degrees, x = 56 degrees. Substituting that back into the equation for y, we get 124 degrees.

31.

Supplement means x + y = 180 degrees. Complement means x + z = 90 degrees.  Using our given info, we know y = 6z. We can substitute that in to get x + 6z = 180. Subtracting our second and third equations, we get 5z = 90, z = 18 degrees.  Therefore, x = 72 degrees, y = 108 degrees.

3 0
3 years ago
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HELP!!!! 2 dot plots. Both number lines go from 0 to 10. Plot 1 is titled fifth grade. There are 2 dots above 1, 3 above 2, 1 ab
Elis [28]

Answer:

5th grade mean - 4.67

7th grade mean - 3.46

5th-grade median - 5

7th-grade median - 3.5

7 0
3 years ago
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Line CD contains points C(7, 4) and D(6, 1). Line JK is parallel to line CD. Which two points lie on line JK?
Andru [333]
From 6,1 to 7,4 
We can determine the slope of the line
rise/run
3/1=3

Now we know the slope of the line, a line parallel to it must obtain the same slope, therefore, I tried to see if the increase in y is three times the increase in x
I found the true pair to be A

(-4,1) and (-2,7)

6 0
3 years ago
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Help plz I need the answer real quick???
Fudgin [204]

Answer:

Distance between mall and library is 6.32 miles.

Step-by-step explanation:

Coordinates of the door to the library is at (2, 4) and door to the mall is at (8, 4).

Since, distance between two points (x_1,y_1) and (x_2,y_2) is given by,

Distance = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

By this formula,

Distance between (2, 4) and (8, 4) will be,

Distance = \sqrt{(8-2)^2+(2-4)^2}

               = \sqrt{36+4}

               =  \sqrt{40}

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4 0
2 years ago
1. Find the discriminant for the following<br> equation: x2-3x -10.
Strike441 [17]

Answer:

The discriminant is 49

Step-by-step explanation:

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3 years ago
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