Answer:
34 is the number
Step-by-step explanation:
105/7=15+19=34
34-19=15
15•-7=-105
The answer is going to be <span>B. 160/8. divide 160/8 to get 20 pages so he reads 20 pages each day and you can check by multiplying 20*8=160</span><span />
Por lo tanto, el valor de x e y es 5, 8.
<h3>¿Qué es el método de sustitución?</h3>
El método utilizado para resolver el sistema de ecuación, en este el valor de una variable se sustituye de una ecuación a otra para encontrar la solución.
Está dado
(x+1)/3 -(y-1)/2 = 1 -----1
7x -4(x+y) = 4 ------2
Resolviendo la segunda ecuación
7x -4x-4y = 4
3x -4y = 4
3x = 4+4y
x = (4+4y) / 3
Sustituyendo este valor en la ecuación 1
2(x+1) - 3(y-1) = 6
2x +2 -3y+3 = 6
2x -3y = 1
2(4+4y)/3 - 3y = 1
8 + 8y - 9y = 3
-y = -5
y = 5
x = 24/3 = 8
Por lo tanto, el valor de x e y es 5, 8.
Para saber más sobre el método de sustitución
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Answer:
Correct choice is 3
Step-by-step explanation:
Two intersecting planes intersect in line consisting of all common points of both planes. You cna name this line knowing at least two common points of these two lines.
1 picture shows that planes PQS and PRS intersect in PS (common points are P and S).
2 picture shows that planes PRS and PQR intersect in PR (common points are P and R).
3 picture shows that planes PQR and QRS intersect in QR (common points are Q and R).
4 picture shows that planes PQR and PQS intersect in QP (common points are P and Q).
