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QveST [7]
3 years ago
15

Using substitution or elimination 9x+3y=-7 y=-3x+4

Mathematics
2 answers:
-Dominant- [34]3 years ago
7 0

Answer:

No solution

Step-by-step explanation:

If we substitute the y into the equation, we get 9x+3(-3x+4)=-7

If we distribute the 3, we get 9x-9x+12=-7

This then cancels out both 9x's and we are left with 12=-7, making it no solution.

lozanna [386]3 years ago
3 0

Answer:

No solution

Step-by-step explanation:

Plug in y=-3x+4 into 9x+3y=-7

9x+3(-3x+4)=-7 Distribute the 3

9x - 9x + 12 =-7 Combine like terms

12 =-7 This statement isn't true. Therefore this is system of has no solution. The lines do not intersect.

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Given that sin0=21/29 what is the value cos 0 for 0°< 0<90°
sp2606 [1]

Answer:

20/29

Step-by-step explanation:

sin θ = 21/29

Use Pythagorean identity:

sin² θ + cos² θ = 1

(21/29)² + cos² θ = 1

441/841 + cos² θ = 1

cos² θ = 400/841

cos θ = ±20/29

Since 0° < θ < 90°, cos θ > 0.  So cos θ = 20/29.

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Answer:

40 percent

Step-by-step explanation:

Now percentage formula

Whatever

- - - - - - - - - - x 100

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16

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3 years ago
If sine of x equals 1 over 2, what is cos(x) and tan(x)?
emmasim [6.3K]
Cosx=sqrt3/2 and tanx=sqrt3/3
5 0
3 years ago
I need help please, I dont know how to do this
Oliga [24]

Answer:

Step-by-step explanation:

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2 = -1+7=6

3 = 0+5=5

4 = 1 +3=4

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