Question

please answer guys very urgently ok ​

Answer 1

Answer:

1. if p = -2 then -4p+7=-4(-2)+7=8+7=15

Answer 2

Answer:

1. if p= -2 then place -2 in the expression given the expression is -4p+7 soo -4×(-2)+7 which is 8 because negative × negative is positive soo -4 ×-2 is +8 then 8+7= 15 soo the ans is 15

2. soo yoy have to put for one decimal place soo 512 will become 5.12 × 10 to the power -2 or 10^-2

why it is 10^-2 because the decimal points will go back ortherwise If it is 10^+2 then the answer will become 512

3 so -45/30 you have to reduce it or simply it's the same soo cancel it with the 5 table you will get -9/6 can also be reduced with 3 table so it will be -3/2