Answer:
r = 85.625 units
Step-by-step explanation:
This question is apparently designed to cause trouble.
C = 2πr . . . . . formula for circumference
r = C/(2π) . . . . solved for radius
r = 269/π . . . . with the value of C put in
If you use an appropriately precise value for π, you get the answer shown above, 85.625. Here, "appropriately precise" means accurate to at least 5 digits. The value of π that gives the above result is 3.1416, accurate to 5 digits.
If you use a value of π accurate to only 3 digits, 3.14, the radius you obtain is 85.669. That 5-digit result cannot be relied upon when it is obtained using a 3-digit value for π. Unfortunately, many math problems (incorrectly) require the use of 3.14 for π, even when calculating results to 5 or 6 or 7 digits. In view of previous teaching, one cannot blame a student for making this selection.
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The choice r=86.259 uses a value of about 3.1185 for pi. That is not even close to any value that is ever recommended for use in a problem like this.
Answer:
The question or picture isn't on there
But if you actually talking about a + b+ c =(cb)a
Answer: D 5x=30
Step-by-step explanation
You just substitute 6 into the equations to see if they make the equation true.
Combine like terms. -2y+y=-y. The equation is now -y-3=6. You need to get the y by itself so add 3 to both sides. The equation is now -y=9. You are solving for y so divide both sides by -1. The equation will be y=-9. The answer is y=-9. Hope this helps! ;)
Answer:
−7x^2+28
Step-by-step explanation:
28−7x^2
=28+−7x^2
=−7x^2+28
