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crimeas [40]
3 years ago
9

40 POINTS is (4,7) a solution of equations? Explain your answer 2x+4y=36 3x-4y=-6

Mathematics
2 answers:
dsp733 years ago
6 0
<span>2x + 4y = 36
3x - 4y = -6
--------------add
5x = 30 
  x = 6

</span>2x+4y=36 
2(6)+4y=36 
12 + 4y = 36
4y = 24
  y = 6

answer
<span>(6, 6) is a solution of equations
</span><span>(4,7) is NOT a solution of equations</span>
Alona [7]3 years ago
5 0

using (4,7)

2(4) +4(7) = 8 +28 =36 True

3(4) - 4(7) = 12 -28 =-16 False (-16 is not -6)

 (4,7) is not a solution

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I forgot how to this can someone help please
Jet001 [13]

Answer:

1728

Step-by-step explanation:

You could write it like this

5.4 * 10^5 * 3.2 * 10^-3  

You could do this by multiplying the numbers first

5.4 * 3.2 = 17.28

Now work with the powers of 10

10^5 * 10^-3 = 10^(5 - 3) = 10^2

10^2 = 100

So the answer is 17.28 * 100 = 1728

3 0
3 years ago
Part 3: Use the information provided to write the standard form equation of each circle
Ber [7]

Answer:

9. \displaystyle (x - 7)^2 + (y - 15)^2 = 25

8. \displaystyle (x - 1)^2 - (y - 10)^2 = 49

7. \displaystyle (x + 5)^2 + (y + 19)^2 = 9

Step-by-step explanation:

\displaystyle [x - h]^2 - [y - k]^2 = r^2 → Hyperbola\:Equation \\ [x - h]^2 + [y - k]^2 = r^2 → Circle\:Equation \\ [h, k] → Centre

According to the equations in the exercises, in the parentheses, ALL NEGATIVE SIGNS give the OPPOSITE terms of what they REALLY are, so be EXTREMELY CAREFUL with your translations:

9. [4, 11]

+ 3 + 4

_____

[7, 15] → (x - 7)² and (y - 15)²

8. [−2, 8]

+ 3 + 2

_____

[1, 10] → (x - 1)² and (y - 10)²

7. [−8, −14]

+ 3 - 5

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[−5, −19] → (x + 5)² and (y + 19)²

** NOTISE THAT THE RADII <em>NEVER</em><em> </em>ALTER.

I am joyous to assist you anytime.

4 0
3 years ago
Read 2 more answers
Help please! Thank you:)
Masja [62]

Answer:

what kind of math is that?

Step-by-step explanation:

7 0
3 years ago
Points for 2-3 people &lt;3
Tanya [424]
Thank you!! have a nice day
7 0
3 years ago
Read 2 more answers
359,352,345 38th term
bulgar [2K]

Answer:

38th term of AP is 100

Step-by-step explanation:

à+n-1×d

359+38-1×-7

359+(-259)

100

5 0
3 years ago
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