Answer:
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Step-by-step explanation:
Answer:
28.4cm
Step-by-step explanation:
Perimeter of the wall will be the sum if all the sides of the right angled triangle.
Given the height of the triangle = 6cm
Hypotenuse = 12cm
Using Pythagoras theorem to get the third side
Hypotenuse² = opposite²+adjacent²
Taking the height as the opposite = 6cm
12² = 6²+adj²
Adj² = 12²-6²
Adj² = 144-36
Adj² = 108
Adj = √108
Adj = 10.39cm
The perimeter of the wall = 6cm+12cm+10.39cm
= 28.39cm
= 28.4cm to nearest tenth.
5 brownies and 15 cookies.
Working
4 plates —> 2B + 6C
1 plate —> 2/4B + 6/4C
10 plates —> 5B + 15C
225 serves because you need to set up a proportion. The proportion is 2/5=90/x then solve for x by cross multiplying, which gives you 450=2x. Then divide 450 by 2 which gives you 225. Work shown in the attached picture.