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stellarik [79]
3 years ago
7

I need help please I don't understand it

Mathematics
1 answer:
german3 years ago
3 0

Answer:

The third and the forth

Step-by-step explanation:

Functions do not have repetition in the x column.

Since the other options have doubles of an x value

(or, to phrase it differently, two y values for one x value)

they are not functions.

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Please answer correctly !!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!
Flura [38]

Answer:

x=13

Step-by-step explanation:

15x-15

15*13=195

195-15=180

3 0
2 years ago
Read 2 more answers
a river flows due south at 1.2 miles per hour. A swimmer attempting to cross the river heads due east swiming at 3 miles per hou
kotegsom [21]

Answer:

The swimmer must move in the direction 338.2°

Step-by-step explanation:

Since the river flows due south at 1.2 miles per hour and the swimmer swims 3 miles per hour due east of the river, since their directions are perpendicular,  the resultant speed is the hypotenuse of the triangle formed by the two perpendicular directions.

The direction of the resultant speed is thus θ = tan⁻¹( vertical component/horizontal component) where vertical component = 1.2 mph due south = -1.2 mph and horizontal component = 3 mph due east = + 3 mph

So, θ = tan⁻¹(-1.2 mph/+ 3mph)

θ = tan⁻¹(-1.2/3)

θ = tan⁻¹(-0.4)

θ = -21.8°

θ = -21.8° + 360° (since we are in the fourth quadrant- between east and south)

θ = 338.2°

So, <u>the swimmer must move in the direction 338.2°</u>.

4 0
2 years ago
Identify the coefficients in the following expression.3x + 4y - 7z + 9 *
igomit [66]

Answer:

3, 4, -7

Step-by-step explanation:

Coefficients are the numbers in front of the variable.

8 0
2 years ago
The following graph represents the equation y=-3/2x+3?
____ [38]

Answer:

yes

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
C(3) = 4/3x + -4<br><br> solve plsss, i appreciate it
pogonyaev

The equation given is:

c(x) = 4/3x + (-4)


Plug in 3 and solve:

c(3) = 4/3(3) + (-4)

c(3) = 12/3 + (-4)

c(3) = 4 + (-4)


Answer: c(3) = 0


Hope I helped!


-Char

8 0
3 years ago
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