The mean of 6x, 3x and 5x is the same as the mean of 40, 50 and 36. Show all work!
1 answer:
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Answer: You can multiply the numerator and the denominator by 2.
Step-by-step explanation:
Equivalent fractions are those fractions that represent the same number.
To find an equivalent fraction of a determined fraction, you need to multiply the numerator and the denominator by the same number.
Knowing the fraction , where the numerator is 1 and the denominator is 4, you can multiply each one (the numerator and the denominator) by 2 to obtain an equivalent fraction.
Then:
Answer:
Option B.
Step-by-step explanation:
step 1
Find the central angle of the shaded sector
Remember that the diameter divide the circle into two equal parts ( 180 degrees each part)
so
Let
x -----> the measure of the central angle of the shaded sector
∠x+72°=180°
∠x=180°-72°=108°
step 2
Find the area of the circle
The area of the circle is
we have
assume
substitute
step 3
Find the area of the shaded sector
Remember that the area of the complete circle subtends a central angle of 360 degrees
so
by proportion find the area of a sector by a central angle of 108 degrees