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solve the simultaneous equations , 5a+2b=23 & 9a-2b=19, algebraically.

find sum of both equations: 14a=42, therefore a=3, substitute 'a' into an equation: (5x3)+2b=23, therefore 2b=8, therfore b=4
RP
Answered by Rohan P. • Maths tutor
5188 Views

state three differences between a plant cell and animal cell.

any three from: no cell wall in animal cells/ (cellulose) cell wall in plant cell centrioles present in animal cell, not in present in plant cell (permanent) vacuole in plant cell, lack of (permanent) vacuol...
RP
Answered by Rohan P. • Biology tutor
11735 Views

Adam is going to get a loan of £ 720 to help pay for the holiday. Adam will have to pay back the £ 720 plus interest of 15 %. He will pay this back in 12 equal monthly installments. How much money will Adam pay back each month?

From the question, we learn that Adam has take out a loan of £720. He will be paying back the loan in 12 monthly installments of the same amount each time. We are also told he must pay the loan back with 15%...
RC
Answered by Riaz C. • Maths tutor
5564 Views

What does sustainable management mean?

Sustainable management means ensuring that it is a sustained in a way for future generations to use. Sustainable management also involves making sure local people are not disadvantaged, and ensuring that man...
LB
Answered by Laura B. • Geography tutor
33099 Views

Begin to explain some trends across a period of the periodic table.

As you move from group 1 across the periodic table to group 7. The types of bonding change. Consider an element within group 1 - Lithium (Li). This exists as a metal, it has metallic bonding. This means ther...
KO
Answered by Kim O. • Chemistry tutor
3880 Views