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Alla [95]
3 years ago
9

3y + x = 12 What is the value of x when y = 3?

Mathematics
1 answer:
Andre45 [30]3 years ago
6 0

Step-by-step explanation:

3y + x = 12

When y = 3, we have 3(3) + x = 12.

=> 9 + x = 12, x = 3.

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1/2 (6x +4) + 3x - 1 = 3/4 (12 - 8x) solve
azamat

Answer:

x = 2/3

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask

If you find this answer helpful, mark it Brainleast ;)

6 0
4 years ago
Determine whether the triangles are similar by aa , ss , or sas ??
max2010maxim [7]

Answer:

1. AA

2. SSS

3. I´m not sure about this one, I´m sorry

4. Not similar

Step-by-step explanation:

This photo can help you identify!! I hope this helps

4 0
3 years ago
Find an equation of the plane. The plane that passes through the line of intersection of the planes x − z = 3 and y + 2z = 3 and
IgorLugansk [536]

Answer:

x-y-3=0

Step-by-step explanation:

Choose two common points on the line of intersection of the planes x − z = 3 and y + 2z = 3:

  • 1st point: if x=0, then z=-3 and y=3-2z=3+6=9, so the 1st point is (0,-3,9);
  • 2nd point: if x=3, then z=0 and y=3-2z=3-0=3, so the 2nd point is (3,0,3).

The perpendicular plane to the plane x+y-4z=6 is parallel to the vector with coordinates (1,1,-4) (normal vector of the given plane).

Hence, the equation of needed plane is

\left\|\begin{array}{ccc}x-0&y-(-3)&z-9\\3-0&0-(-3)&3-9\\1&1&-4\end{array}\right\|=0\Rightarrow \left\|\begin{array}{ccc}x&y+3&z-9\\3&3&-6\\1&1&-4\end{array}\right\|=0

Thus,

\left\|\begin{array}{ccc}x&y+3&z-9\\3&3&-6\\1&1&-4\end{array}\right\|=0\Rightarrow \\\\-12x-6(y+3)+3(z-9)-3(z-9)+6x+12(y+3)=0\\ \\-6x+6(y+3)=0\\ \\-x+y+3=0\\ \\x-y-3=0

4 0
4 years ago
Can you help me with my work select the best estimate of the product of 18*31 =
Anna007 [38]
18 could round to 20
31 could round to 30
30 x 20 would be 600

Pretty sure that’s your best estimate,
600
3 0
3 years ago
-2(4x - 4) + x<br> Need help<br> Show work
IgorC [24]

Answer:

Distribute:

=(−2)(4x)+(−2)(−4)+x

=−8x+8+x

Combine Like Terms:

=−8x+8+x

=(−8x+x)+(8)

=−7x+8

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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