2 years ago

Please help now i need it quick

2 answers:

8 0

1. Out of a study of 64 dentists, 56 recommended.
2. 3 is the answer. Hope you do well on your test :)))

6 0

I believe c is the answer on the first one

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Crank

So for this, I will be using the substitution method. Firstly, subtract both sides in the second equation by 2x: $4x+3y=20\\ y=7-2x$

Next, substitute y in the first equation with 7-2x, then solve for x from there:

$4x+3(7-2x)=20\\ 4x+21-6x=20\\ -2x+21=20\\ -2x=-1\\ x=\frac{1}{2}$

Now that we got x, substitute it into either equation to solve for y:

$4*\frac{1}{2}+3y=20\\ 2+3y=20\\ 3y=18\\ y=6\\ \\ 2*\frac{1}{2}+y=7\\ 1+y=7\\ y=6$

In short, x = 1/2 and y = 6.

6 0

2 years ago

klasskru [66]

Answer:

$x \geq -8$ (NUMBER LINE ATTACHED)

Step-by-step explanation:

Hi! Hope this helps, if so please mark me brainliest! :)

6 0

3 years ago

igor_vitrenko [27]

I believe the answer is 408

8 0

2 years ago

luda_lava [24]

Answer:

The GCF of 3x^4, 15x^3 and 21x is 3x^2

Step-by-step explanation:

3x^2(x^2), 3x^2(5x) , 3x^2(7)

4 0

3 years ago

PSYCHO15rus [73]

M(N+2)+3N+6
M*(n+2)+3(n+2)

Answer

(n+2)*(m+3)

3 0

3 years ago