The diameter of a circle is 9 inches. What is the radius?

Answers

Answer 1

Answer: r=1/2*d
r=1/2*9
r=4.5 inches

Answer 2

Answer: the radius is half of the diameter soo the answer is 9/2 which = 4.5

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What is 18%as a percent

Answers

Step 1: Write down the percent divided by 100 like this: percent/100 2: If the percent is not a whole number, then multiply both top and bottom by 10 for every number after the decimal point. (For example, if there is one number after the decimal, then use 10, if there are two then use 100, etc.)Step 3: Simplify (or reduce) the fraction

Liza bought 5/8 pound of trail mix. She gives 2/8 pound of trail mix to Michael. How much trail mix does Liza have left?

Answers

5/8 - 2/8 = 3/8, and 3/8 simplify into 0.375, so he have 0.375 pounds of trail mix left.

What is 97.356 in base ten numerals

Answers

97.356

ninety seven and three hundred fifty six thousandths

Solve each equation by completing the square. If necessary, round to the nearest hundredth.19. X²-18x=19
20. 4 a²+8a-20=0

Answers

$x^2-18x=19\n\nx^2-2x\cdot9+9^2-9^2=19\n\n(x-9)^2-81=19\n\n(x-9)^2=19+81\n\n(x-9)^2=100\iff x-9=\pm√(100)\n\nx-9=-10\ \vee\ x-9=10\n\nx=-10+9\ \vee\ x=10+9\n\nx=-1\ \vee\ x=19$

$4a^2+8a-20=0\ \ \ \ /:4\n\na^2+2a-5=0\n\na^2+2a\cdot1+1^2-1^2=5\n\n(a+1)^2-1=5\n\n(a+1)^2=5+1\n\n(a+1)^2=6\iff a+1=\pm\sqrt6\n\na=-\sqrt6-1\ \vee\ a=\sqrt6-1\n\na\approx-3.45\ \vee\ a=\approx1.45$

What does 1/10 plus 8/100 equal

Answers

1/10 plus 8/100
Equals = 9/50

Which number is greater 10.6395 or 10.64

Answers

The number 10.64 is greater than the number 10.6395 as the number 10.64has a 4 in the 100ths place and the number 10.6395 has the number 3 in the 100ths place, 4 is greater than 3, therefore 10.64 is greater than 10.6395

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Ayesha has a theory about two digits numbers that have a larger tens digit then ones digit.she says that reversing the digits and subtracting the reversed number from the original number will always generate a number that is multiple of 9.is ayesha right?if so why do you think this works?if not,why not?