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Which is bigger: or 0.78?


6.6

  1. If x = 2, calculate the value of:

x2 - x


21.

Work out the height of a parallelogram of base 10m and area 60m2.


6.2

  1. Decrease £900 by 5%

6.7

  1. Solve: 2(x + 3) = 8



6.3

  1. Divide £360 in a ratio of 1:4

6.8

  1. Find the nth term of this sequence

3 8 13 18 23 ...


22.

Three of the angles of a quadrilateral are 1320, 140 and 1050.

What is the size of the 4th angle?


6.4

  1. If 75% is £66, what is the full

cost?


6.9

  1. If y=4x - 1, find the value of y

when x = -2




6.5

  1. Work out: -

6.21 Use π on the calculator

  1. Calculate the length of the

circumference of a circle with a

radius of 4cm (1dp)


23.

Sam ran at 6km/h for 2h 20min.

What distance did he run?


7.1

  1. To increase an amount by 4.6%, what

single multiplier would you use?


7.6

  1. Expand & simplify:

(x - 5)(x + 4)




7.2

  1. Increase £500 by 4.6%

7.8

  1. Solve: 2x > 7

24.

500 tickets are sold for a prize draw.

The probability that Bill wins first prize is . How many tickets did he buy?


7.3

  1. Without a calculator work out:

6 x 0.6


7.9

  1. Work out the value of: 5x - 2y

When x = -2 and y = -3




7.4

  1. Round off 0.521 to one significant

figure


7.10

  1. Write down the next term in this sequence: 4 7 13 22 34 ...

  2. Use π on the calculator

Work out the volume of this prism?

(Correct to 1decimal place)

3cm

10cm


7.5

  1. Use a calculator to work out (2dp)

7.34 x 4.71

5.63 + 11.89


7.11

  1. If y = x2 + 2x ,

find the value of y when x = -2

Verified Answer :

6.6. ans. is 2
21. and is

which is bigger 6.6 or 0.78 ?
6.6 is bigger
===================
x^2 - x......when x = 2
2^2 - 2 =
4 - 2 =
2 <==
====================
A = bh
60 = 10h
60/10 = h
6 = h....so height is 6 m
====================
900 decreased by 5% =
900 - 0.05(900) = 900 - 45 = 855 <==
=====================
2(x + 3) = 8
2x + 6 = 8
2x = 8 - 6
2x = 2
x = 2/2
x = 1 <==
=======================
360 in a ratio of 1 to 4.....

1:4......added = 5

1/5(360) = 360/5 = 72
4/5(360) = 1440/5 = 288

ratio is 72:288
=======================
3,8,13,16,23.....this is an arithmetic sequence with a common difference of 5

the nth term : an = a1 + (n - 1)d
an = 3 + 5(n-1) <===
======================
are there decimals in this problem......because the angles of a quadrilateral , when added = 360 degrees
======================
75% = 66....what is full cost...
75% of what is 66..
0.75x = 66
x = 66 / 0.75
x = 88 <==
=====================
y = 4x - 1...when x = -2
y = 4(-2) - 1
y = -8 - 1
y = -9 <==
======================
6.5 ???? cant see the problem
======================
circumference of circle with radius of 4.....
C = 2(pi)r
C = 2(3.14)(4)
C = 25.12 cm <== or C = 8(pi)
=====================
6 km / h for 2 hrs 20 min...

6 / 60 = 0.1 km per minute......0.1(140) = 14 km <==
=====================
to increase an amount by 4.6%, ur multiplier would be 1.046
=====================
(x - 5)(x + 4) =
x^2 + 4x - 5x - 20 =
x^2 - x - 20 <===
======================
500 increased by 4.6%....
500(1.046) = 523 <==
=======================
2x > 7
x > 7/2 or x > 3.5
======================
500 tickets are sold.....probability of winning first prize (if there is only 1 first prize) is 1/500....dont know how many tickets he bought
======================
6
0.6 = 3.6......u simply multiply 6 6 = 36....and since 0.6 has a decimal 1 space to the left, in ur answer(36)...move the decimal 1 space to the left giving u 3.6
=======================
5x - 2y....when x = -2, y = -3
5(-2) - 2(-3) =
-10 + 6 =
-4 <==
=======================
0.521 to one significant figure = 0.5
=======================
4,7,13,22,34......
4 to 7 = 3 spaces
7 to 13 = 5 spaces
13 to 22 = 9 spaces
22 to 34 = 12 spaces
I am sorry....I do not know this one..cannot find the pattern
=======================
V= bh
V = 3
10
V = 30
not sure about this...because volume of a prism is base height....there is o (pi) in the formula.
=====================
7.34
4.71 = 34.5714 rounds to 34.57
5.63 + 11.89 = 17.52
====================
y = x^2 + 2x......x = -2
y = -2^2 + 2(-2)
y = 4 - 4
y = 0 <==