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skelet666 [1.2K]
3 years ago
14

OMG PLEASE HELP ME PLESE

Mathematics
1 answer:
slava [35]3 years ago
7 0

Answer:

use demos

Step-by-step explanation:

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Which equations results from adding the equations in this system?<br> x+6y=9<br> -x+2y=-15
UkoKoshka [18]

Answer:

8y = -6

Step-by-step explanation:

Simply add the equations as you would numbers.

The 'x's cancel each other out. The 'y's add together as normal numbers.

9 + (-15) = -6

Hope that this helps!

4 0
3 years ago
Se sabe q la suma de tres numeros es de 850. El primer es un tercio del segundo y el tercer número es el doble del segundo.¿Cual
murzikaleks [220]

Answer:

Primer número = x = 85

Segundo número = y = 255

Tercer número = z = 510

Step-by-step explanation:

Se sabe que la suma de tres números es 850. El primero es un tercio del segundo y el tercer número es el doble del segundo.

Representamos:

Primer número = x

Segundo número = y

Tercer número = z

Se sabe que la suma de tres números es 850.

x + y + z = 850 ...... Ecuación 1

El primero es un tercio del segundo

x = 1/3 años

El tercer número es el doble del segundo.

z = 2 años

Sustituimos 1 / 3y por x y 2y por z en la Ecuación 1

1 / 3y + y + 2y = 850

y / 3 + 3y = 850

Multiplica ambos lados por 3

y + 9y = 850 × 3

10 años = 2550

y = 2550/10

y = 255

Resolviendo para x

x = 1/3 años

x = 1/3 × 255

x = 85

z = 2 años

z = 2 × 255

z = 510

Por eso,

Primer número = x = 85

Segundo número = y = 255

Tercer número = z = 510

5 0
3 years ago
Choose the solution(s) of the following system of equations:
oee [108]

I think this is the answer X = 3 + 1/2y

8 0
2 years ago
Read 2 more answers
The radius of a circle is 12 in. What is the circle's diameter?
enyata [817]

Answer:

24 in

Step-by-step explanation:

The diameter of a circle is twice its radius which is 12 * 2 = 24.

3 0
3 years ago
Read 2 more answers
In a 30-60-90 degree right triangle, the side opposite the 30-degree angle is
Afina-wow [57]

Answer:

It is the short leg.

Step-by-step explanation:

The triangle and is called a right triangle and the side opposite the 30-degree angle is the shorter leg

6 0
3 years ago
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