Jodie measure a house and its pot and made a scale drawing. The scale of the drawing was 2 inches : 1 foot. If the actual length
2 answers:
Answer:
148 Inches
Step-by-step explanation:
Scale Drawing is a drawing that has been decreased or increased from its original size to a given scale. This scale is a ratio of the size of the drawing to the size of the object being drawn.
The scale of Jodie's drawing is 2 inches: 1 foot
It means that for every 1 foot of the original house, Jodie represents it with 2 inches on her drawing.
If the actual length of the backyard is 74 feet.
Remember, the scale is a ratio given by:
Size of the drawing : Size of the object being drawn.
Let x be the length of the yard in the drawing
2:1=x:74
x= 2 X 74 = 148 inches
The length of the yard in the drawing is 148 inches.
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Answer: 0.0228
Step-by-step explanation:
Given : The mean and the standard deviation of finish times (in minutes) for this event are respectively as :-
If the distribution of finish times is approximately bell-shaped and symmetric, then it must be normally distributed.
Let X be the random variable that represents the finish times for this event.
z score :
Now, the probability of runners who finish in under 19 minutes by using standard normal distribution table :-
Hence, the approximate proportion of runners who finish in under 19 minutes = 0.0228