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Lerok [7]
2 years ago
8

8. Solve X=Students & Y=Teachers X+Y=24 X=3Y

Mathematics
1 answer:
Len [333]2 years ago
5 0

Answer:

x=18, y= 6

Step-by-step explanation:

if x+y=24

x= 24- y

in second case

x= 3y

24_ y = 3y

24=4y

y= 6

hence x = 24 _6 = 18

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−10x+3y=5 ASAP<br> x=y−4 ​ <br><br> x ?<br> y?
nexus9112 [7]

Answer:

x = 1 and y = 5

Step-by-step explanation:

Use substitution because you know that x = y - 4, and plug this into the first equation to get -10(y - 4) + 3y = 5, or -10y + 40 + 3y = 5. This is -7y = -35 so y = 5. Plug this into the 2nd equation to get that x = 1 and y = 5.

3 0
2 years ago
Please help me....I really need help!!
scoundrel [369]

\dfrac{c^2-4}{6c^4+15c^3}\div\dfrac{c^2+4c+4}{12c^3+30c^2}=\dfrac{c^2-2^2}{3c^3(2c+5)}\div\dfrac{c^2+2(c)(2)+2^2}{6c^2(2c+5)}\\\\_{\text{use}\ a^2-b^2=(a-b)(a+b)\ \text{and}\ (a+b)^2=a^2+2ab+b^2}\\\\=\dfrac{(c-2)(c+2)}{3c^3(2c+5)}\cdot\dfrac{6c^2(2c+5)}{(c+2)^2}=\dfrac{(c-2)}{c}\cdot\dfrac{2}{(c+2)}=\boxed{\dfrac{2(c-2)}{c(c+2)}}

6 0
3 years ago
When 23 is subtracted from the square root of three times a number, the result is 16. find the number?
gizmo_the_mogwai [7]
(√3n)-23=16

Put all of the numbers without a variable on the right side of the equation
(√3n)=39

Simplify 
<span>1.732051n</span>=<span>39
</span>
Divide 39 by 1.732051
n=<span>22.516658

Round
n=22.5</span>
8 0
3 years ago
Evaluate the following expression when x = 31 and y = 28.<br> 3(x-7)3 + 128 - 35
ki77a [65]
I hope this is correct

4 0
3 years ago
Solve. −3.5=−4.6x−5.1 Enter your answer as a fraction in simplest form in the box.
Law Incorporation [45]

Answer:

<u>x = 8/23</u>

Step-by-step explanation:

<u>Adding 3.5 to each side</u>

  • -3.5 + 3.5 = -4.6x - 5.1 + 3.5
  • -4.6x - 1.6 = 0

<u>Adding 4.6x to each side</u>

  • -4.6x - 1.6 + 4.6x = 0 + 4.6x
  • 4.6x = -1.6

<u>Dividing each side by 4.6</u>

  • 4.6x/4.6 = -1.6/4.6
  • <u>x = 8/23</u>
7 0
2 years ago
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