Answer:
Hi There the correct answer is {x,y} = {-1,-10}
System of Linear Equations entered :
[1] 3x - y = 7
[2] 4x - 2y = 16
Graphic Representation of the Equations :
y + 3x = 7 -2y + 4x = 16
Solve by Substitution :
// Solve equation [1] for the variable y
[1] y = 3x - 7
// Plug this in for variable y in equation [2]
[2] 4x - 2•(3x-7) = 16
[2] -2x = 2
// Solve equation [2] for the variable x
[2] 2x = - 2
[2] x = - 1
// By now we know this much :
x = -1
y = 3x-7
// Use the x value to solve for y
y = 3(-1)-7 = -10
Solution :
{x,y} = {-1,-10}
Hope it helps!
Answer:
1/21
Step-by-step explanation:
Cards: 2,3,4,5,6,7,8 7 cards
1st card :5
P(5) = number of 5's / total
= 1/7
Then we keep the card
Cards: 2,3,4,6,7,8 only 6 cards left
card less than 4: 2,3
P (card less than 4) = number of cards less than 4/ total cards
= 2/6 = 1/3
P (5, no replacement, card less than 4) = P(5) * P( less than 4)
= 1/7 * 1/3
=1/21
Answer:
$6250
Step-by-step explanation:
5000 = 80%
5000/80=62.5
62.5*100=6250
Answer:
Las longitudes solicitadas en yardas son:
- <u>Trayecto A = 109.361 yardas.</u>
- <u>Trayecto B = 20.231785 yardas.</u>
Step-by-step explanation:
Para hacer la conversión de unidades que requieres en el ejercicio, debes saber que:
Con ese factor de conversión tú puedes hacer reglas de tres para calcular las medidas que requieres. En el caso del trayecto A:
Si:
- 1 metro = 1.09361 yardas
- 100 metros = X
Entonces:
Cancelamos metros y obtenemos:
- x = 100 * 1.09361 yardas
- <u>x = 109.361 yardas</u>
En este caso, <u>el trayecto A en yardas corresponde a 109.361 yardas</u>. El mismo procedimiento puede aplicarse para el trayecto B:
Si:
- 1 metro = 1.09361 yardas
- 18.50 metros = X
Entonces:
Cuando se cancelan los metros se obtiene:
- x = 18.50 * 1.09361 yardas
- <u>x = 20.231785 yardas</u>
Así, <u>el trayecto B en yardas corresponde a 20.231785 yardas</u>.