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Brut [27]
3 years ago
10

Solve the system of equations using substitution. 3x + 2y = 7 y = –3x + 11

Mathematics
1 answer:
Maksim231197 [3]3 years ago
4 0
<span>3x + 2y = 7
y = –3x + 11

replace </span>y = –3x + 11 into 3x + 2y = 7 

3x + 2y = 7 
3x + 2(–3x + 11) = 7
3x -6x + 22 = 7
-3x = 7 - 22
-3x = -15
x = 5

<span>y = –3x + 11
y = -3(5) + 11
y = -15 + 11
y = -4

x = 5 and y = -4

answer: </span><span>D. (5, –4)</span>
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Calcular x en: los datos q faltan
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Answer:

x = 13

Step-by-step explanation:

No se exactamente como decir esto porque yo ayudo la majoria de los usuario en ingles pero hay que usar un método para describir a x

Un método que se llama Pythagorean theorem

Pythagorean theorem: a^2 + b^2 = c^2 donde a^2 = 5 b^2 = 12 y c^2 = x

Entonces…

5^2 + 12^2 = c^2

Nota: podemos ver que esto esta bien porque el sum de los dos lados suma el mas largo.

Ahora

25 + 144 = c^2

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Pero eso no puede ser la respuesta porque no tiene sentido a que x sea un lado que mide 169 entonces tenemos que usar sqrt rt

sqrt rt de 169 = 13

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4 0
3 years ago
A candy manufacturer says on its web site that it wants to reach a 60 : 40 consumer taste preference for new products.What do yo
kenny6666 [7]
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7 0
3 years ago
Is RATIONAL , IRRATIONAL,NON REAL NUMBERS <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B27" id="TexFormula1" title=" \sqrt{
Tanya [424]

Answer:

It's irrational

Step-by-step explanation:

the square root of 27 is equal to:

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We know that \sqrt{3} is an irrational number (but a real number), so 3\sqrt{3} is the same.

In case we need to prove that \sqrt{3} is irrational, please leave a comment.

8 0
3 years ago
Read 2 more answers
Help??
hoa [83]
3:1

Basicaly if you divide the x colome by the y colome it shows that every 3 rented-days equals $1

Sorry for the bad spelling
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3 years ago
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