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marishachu [46]
3 years ago
5

State what method you are using to solve the system. Then solve the system. Show all steps of your work, clearly state your answ

er as a coordinate pair, and check it. 1. Y = −3x 4x + y = 2 2. Y = 7x − 5 2x + y = 13 3. X = −5y − 4 x − 4y = 23 4. −4x + 6y = −20 2x − 3y = 10 5. 3x − y = 1 −2x + y = 2 6. Y = − 3x y = 7 + 4x
Mathematics
1 answer:
Anit [1.1K]3 years ago
6 0

Answer:

The method used is substitution method

x = 2, y = -6

Step-by-step explanation:

Given the simultaneous equation

Y = −3x .....  1

4x + y = 2 ... 2

Substitute equation 1 into 2

4x + (-3x) = 2

4x - 3x = 2

x = 2

Get y:

y = -3x

y = -3(2)

y = -6

<em>Hence the value of (x, y) is (2, -6)</em>

<em></em>

<em></em>

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8=7 +1/4 4 true or false?
sashaice [31]

Answer:

True

Step-by-step explanation:

4 times 1 fourth is just one

7+1 =8

8=8

therefore this statement is true

Hope it helps <3

8 0
3 years ago
A help would be greatly appreciated! 
dalvyx [7]
The tree was approximately 40.8ft tall.

You use the equation, a^2+b^2=c^2.
12^2 + 39^2 = x^2, add the results of 12^2 and 39^2 to make 1665 = x^2. You can take the positive root of both sides, 3√185, and it equals 40.80441152, which is rounded to 40.8.
7 0
4 years ago
How do you solve g= y-c+x for x
SOVA2 [1]
To solve for x just isolate x by moving the other variables so....:
First add c to both sides
g+c= y+x
Subtract y from both sides
g+c-y= x
That should be your final answer (we cannot come up with an actual digit for x because there are no numbers in this equation we simply can make an equation for x)
8 0
3 years ago
Read 2 more answers
Solve the proportion. 8/11 = 4/y + 2
Rashid [163]

Answer:

The answer is Y = - (22)/(7 )

Step-by-step explanation:

The parenthesis do not mean anything write 22/7 as a fraction.. why did you report my answer so rude

4 0
3 years ago
A partial proof was constructed given that MNOP is a parallelogram.
Yanka [14]
A diagram of parallelogram MNOP is attached below

We have side MN || side OP and side MP || NO

Using the rule of angles in parallel lines, ∠M and ∠P are supplementary as well as ∠M and ∠N.

Since ∠M+∠P = 180° and ∠M+∠N=180°, we can conclude that ∠P and ∠N are of equal size. 

∠N and ∠O are supplementary by the rules of angles in parallel lines
∠O and ∠P are supplementary by the rules of angles in parallel lines

∠N+∠O=180° and ∠O+∠P=180°

∠N and ∠P are of equal size

we deduce further that ∠M and ∠O are of equal size

Hence, the correct statement to complete the proof is

<span>∠M ≅ ∠O; ∠N ≅ ∠P

</span>

4 0
4 years ago
Read 2 more answers
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