Miss penny inherits £650. She decides to save some of the money and spend the rest. The ratio of saving to spending money is 9:4
2 answers:
The amount she saves is £450 and the amount she spends is £200.
Step-by-step explanation:
Given,
The amount she has = £650
The ratio of saving to spending money is 9:4
To find the amount she saves and she spends.
Let,
The amount she saves = 9x
The amount she spends = 4x
According to the problem,
9x+4x = 650
or, 13x = 650
or, x = = 50
Hence,
The amount she saves = £50×9 = £450
The amount she spends = £50×4 = £200
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Answer:
<em>P=760</em>
Step-by-step explanation:
Three of the coordinates of the square ABCD are A(-212,112) B(-212,-3) C(2,112). The image below shows the square is not ABCD but ABDC. In fact, this is not a square, as we'll prove later.
Note the x-coordinate of A and B are the same. It means this side is parallel to the y-axis. Also, the y-coordinate of A and C are the same, meaning this side is parallel to the x-axis. The missing point D should have the same x-coordinate as C and y-coordinate as B, i.e. D=(2,-3).
This shape has sides that are parallel to both axes.
To calculate the perimeter we find the length of two sides.
The distance from A to B is the difference between their y-axis:
w=112-(-3)=115
The distance from A to C is the difference between their x-axis:
l=2-(-212)=215
It's evident this is not a square but a rectangle. The perimeter is
P=2w+2l=330+430
P=760
