Let the balloon pump be m and one pack of balloons be n.
we will use the given data to calculate the the price of balloon pump (m) as well as the price of one pack of balloons (n). Then, we will use these prices to calculate the requirement.
First, we know that 1 balloon pump (m) added to 3 packs of balloons (3n) costs 9<span>£
this means that: m + 3n = 9
therefore: m = 9 - 3n .................> equation 1
Then, we know that one pump (m) and 4 packs (4n) cost 11</span><span>£.
this means that: m + 4n = 11 ..........> equation 2
Substitute with equation 1 in 2:
9 - 3n + 4n = 11
n = 11 - 9
n = 2</span><span>£
Substitute with the value of n in equation 1:
m = 9 - 3n = 9 - 3(2) = 9 - 6 = 3</span><span>£
we know to know the price of one pump and eight packs:
price = m + 8n = 3 + 8(2) = 3 + 16 = 19</span><span>£</span>
Answer:
Step-by-step explanation:
The figure is made up of a rectangle and two semicircles.
We find the area of the rectangle using the formula;
We find the area of one of the semicircles and multiply by 2;
The area of the semicircles
We substitute and to obtain;
The area of the figure is
To the nearest tenth we have;
The correct answer is A
Answer:
opening the bracket, the expression becomes
12x^2-28-19x^2
collect like terms
12x2-19x^2-28
-7x^2-28
-7(x^2+4)
Explained the mistake and correct answer in photo.
Answer:
41hrs
Step-by-step explanation:
$7*35hrs= $245
$308-$245=$63
$63/10.50=6hrs
35+6=41