1) Make p The subject of the formula below
q= 1/5p=2 (Thats 1 over 5)
2) v = fw
Calculate the value of v when
f=4x10 to the par of 4
w=5.7x10 to the par -7
Answer in standard form.
3) Calculate the value of f when
v = 2.8x10 to the par of 8
w = 5.7x10 to the par -7
4) Mrs brown paid £115.20 for parts and £38.40 for labour
What % of the cost was for labour?
5) Solve the following inequality where X can take any value
-12 < (Or equal to) 3X < 9
6a) Round the following numbers to 1 signifiant figure your answer will be an approximation
11.8 x 3.41
-----------
5.52
6b)
0.0029 x 0.041 squared
7) Solve the simultaneous equations
7x - 4y = 37
6x + 3y = 51
8) Not sure if you can do this on a forum but o well worth a try
On the grid below, leave unshaded the region satisfying the inequalities
-2 < ( or equal to) X < (or equal to) 2
0 <(or equal to) Y < (or equal to) 3
graph goes from the x axis -4 to 4
Y axis is -4 to 4
Thanks in advance guys!
4) Percent cost of labour is going to be:
5)
Split this into two inequalities. (You can also do this stuff all at once, but since you are fairly new to this I'll try to keep it simple.)
The first half:
The second half:
Putting the two pieces back together:
6a)
To one significant figure we round to the ones place. Thus the answer is 7.
6b)
Probably the first thing you will want to do here is convert this to scientific notation, so we need . Again, we need to round to the ones place (in the scientific notation, of course!) so we get . If you insist, we can write this as 0.000005. (Notice that none of the 0's in front of the 5 are significant. They are merely place-holders.)
-Dan
There are a whole bunch of ways to solve something like this. I'm going to use the substitution method.
Solve the top equation for, say, y.
Now insert this value of y into the second equation:
Let's get rid of those fractions and multiply both sides by 4:
Now put this value of x into the y equation (or either of the original equations):
So the solution is .
-Dan