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Luda [366]
4 years ago
7

WILL GIVE BRAINLIEST!!!!!!

Mathematics
2 answers:
stich3 [128]4 years ago
8 0

Answer:

a = πr²

r = 1/2 (d). so if the diameter is 2, then r = 1

so if you multiply, the area will be 1 π inches

a = π(1)²

a = π

v = 3π inches

because of the error in the area, it led to the error in calculating the volume.

Step-by-step explanation:

frutty [35]4 years ago
4 0

Answer:

a = πr²

Step-by-step explanation:

You might be interested in
Y = -9x - 2; (4, -37)
Karo-lina-s [1.5K]

Answer:

B. No the ordered pair does not satisfy the equation

Step-by-step explanation:

y = -9x - 2

Substitute the point in and see if it is true

-37 = -9(4) -2

-37 = -36 -2

-37 = -38

This is not true so the point is not a solution

6 0
4 years ago
Find the area of a triangle with legs that are: 12 m, 15 m, and 9 m.
Elza [17]

Answer:

108 meters squared or m^2

Step-by-step explanation:

* means multiply

15 is probably hypotenuse because its the longest

12 and 9 are probably base and height

area = base * height

area = 12 * 9

area = 108

8 0
3 years ago
Answer 8 and 9 for 10+ points
castortr0y [4]

Answer:

question 8 : it is equal to 0

Question 9 : 4+5\sqrt{2}

Step-by-step explanation:

= \sqrt{7} -\sqrt{28}\\2\sqrt{7} - \sqrt{4x7}\\2\sqrt{7} - 2\sqrt{7}\\0\\\sqrt{2} (5+\sqrt{8})\\5\sqrt{2} + \sqrt{2*8}\\5\sqrt{2} + 4\\4 + 5\sqrt{2}

4 0
3 years ago
Dustin has only nickels and quarters in his piggy bank. He has 49 coins total for a combined value of $8.85. How many of each ty
eduard
Well obviously quarters equal 25 cents.  So you have to divide the 8.85 by 25 first.  That means he could have 35 quarters.  That least the rest as being dimes.  So find the remaining amount of the 8.85.  If you have 35 quarters that's $8.75.  And 8.85 minus 8.75 is 10 cents.  which would be 2 nickels.  That only adds up 37 coins.  So you break down one of the 25.  That would mean 5 more coins could be nickels.  Add 37 and 5 to get 42.   Do it again.  25 cents in nickels would be 5 more coins.  would be 46.  that would be missing 2 coins. But don't forget you're also subtracting from the 35 quarters. Now you would technically have 12 nickels and 33 quarters.  So you can do it one more time.  32 quarters means there is $8 in quarters at this point.

Now add you have 12 nickels, and you made 5 more.  That's 17 nickels.  That equals 85 cents.  So add 17 and 32 to be sure you have 49 coins, which you do. 


So 17 nickels, 32 quarters to equal 49 coins and $8.85

(sorry some of it got mixed up above because I was forgetting to subtract the quarters from the total as I changed them to nickels, so pay attention to the end)
8 0
3 years ago
What is 1423 divided bye 789
DedPeter [7]

Answer:

1.8

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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