A culture starts with 4000 bacteria after 5 hours it has 4800 how many bacteria after 15 hours
2 answers:
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75% of apples have worm holes
Step-by-step explanation:
Given:
Total number of apples=12 apples
Number of apples with worm holes= 9 apples
To find:
Percentage of the apples have worm holes=?
Solution:
Substituting the values
Percentage of the apples have worm holes=75%
Answer:
13 square units
Step-by-step explanation:
You <em>could</em> calculate the length of each side using Pythagorean theorem, then use Heron's formula to find the area. But there's an easier way: find the area of the rectangle that contains the triangle, and subtract the areas of the smaller triangles in the corners.
The area of the rectangle is 4 × 7 = 28.
The area of the upper left triangle is ½(2)(4) = 4.
The area of the upper right triangle is ½(3)(5) = 7.5.
The area of the lower right triangle is ½(1)(7) = 3.5.
So the area of the triangle is:
28 − 4 − 7.5 − 3.5 = 13
