Answer:
77.
Proved
78.
Proved
79.
Proved.
80.
Proved.
Step-by-step explanation:
77. Left hand side
=
=
=
{Since we know,
}
=
= Right hand side (Proved)
78. Left hand side
=
=
{Since
}
=
= Right hand side (Proved)
79. Left hand side
=
=
{Since
}
=
= Right hand side
80. Left hand side
=
=
{Since
}
=
=
= Right hand side. (Proved)
First one:
2.632 • 104 = 273.728
Second one:
2 • 10 - 7 = 13
Answer:
16
Step-by-step explanation:
Answer:
49
Step-by-step explanation:
3x+10+6x-20+x+60=10x+50
10x+50=180
10x=130
x=13
A=3*13+10=49
Answer: 15x+7
Step-by-step explanation:
you multiply 3 by 5 and add 7