First, you find the rate at which Jeffery types.
110 divides by 2.75. This makes 40.
Then to find the amount of words he types in 4.25 minutes,
40 x 4.25. This makes 170.
So Jeffery can type 170 words in 4 1/4 minutes.
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Step-by-step explanation:
Pythagoras (for right-angled triangles) :
c² = a² + b²
c being the Hypotenuse, the side opposite of the right angle. and that would be here the diagonal.
c = diagonal = 10 ft
therefore, the width of the rectangle is 10/2 = 5 ft
10² = 5² + b²
100 = 25 + b²
b² = 75
b = length = sqrt(75) = 8.660254038... ft
The first two rows of coefficients are identical, so by inspection, the determinant is 0.
Answer:
oof i dont know this
Step-by-step explanation:
