3 years ago

A number increased by 7 is less than 15

Mathematics

2 answers:

defon3 years ago

7 0

Anything less than or equal to 14

sveta [45]3 years ago

5 0

X + 7 < 15

To be exact

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Answer:

$48.5cm^{2}$

Step-by-step explanation:

This shape is actually just a rectangle with a missing triangle. We can first find the area of the rectangle with $7*8=56$ and subtract the triangle.

Area of missing triangle = $\frac{1}{2} *b*h$ (b is the base and h is the height)

Base = $8-3=5$

Height = $7-4=3$

Area of missing triangle = $\frac{1}{2} *5*3=7.5$

Area of the figure: $56-7.5=48.5$

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Alternatively, you can find the area of each individual shape and add them all up.

Area of the rectangle: $8*4=32$

Area of square: $(7-4)*3=9$

Area of triangle: $\frac{1}{2} *(8-3)*(7-4)=\frac{1}{2} *5*3=7.5$

Total Area: $32+9+7.5=48.5$

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