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KIM [24]
3 years ago
14

Helppppp pleaseeee xxx

Mathematics
1 answer:
ankoles [38]3 years ago
6 0

Answer:

area of minor sector qr=140/360×πr²=140/360×22/7×3²=11yd²

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Twice a certain whole number subtracted from 3 times the square of the number leaves 133. Find the number
user100 [1]

Answer:

7

Step-by-step explanation:

"a certain whole number" is a number that we don't know, so pick a variable, let's use n

"Twice" means two times, so we'll use 2n for this.

"subtracted from" means the 2n will be AFTER the minus sign.

____ - 2n

What goes in front? "3 times the square of the number" 3n^2

Now we have 3n^2 - 2n

Lastly, we see the result is 133. So this gives us:

3n^2 - 2n = 133 To solve, subtract 133 from both sides of the equation.

3n^2 -2n - 133 = 0 Next FACTOR.

(3n + 19)(n - 7) = 0

3n+19=0 and n-7=0

n=-19/3 and n=7

Since we are looking for a whole number choose n=7

6 0
3 years ago
Buying three tires at $80 each and getting a fourth tire free
kykrilka [37]

Answer

3 x 80=240

240 / 4=$60 effective unit rate for each tire.

Step-by-step explanation:

mark me as brainliest!

4 0
3 years ago
Select the quadratic that has roots x=8 and x=-5
avanturin [10]
A negative cannot be a root, 8= 2.4
3 0
3 years ago
Part three out of six
Zinaida [17]
A) 1x24
     2x12
     3x8
      4x6
B) 1x40
     2x20
     4x10
      5x8
C) the highest common is 8
 
 hope this will help you
 
3 0
3 years ago
Solve the inequality graphically. 4x^2-13x+7<0
Feliz [49]

Answer:

Step-by-step explanation:

(\frac{13 - \sqrt{57} }{8} , \frac{13 + \sqrt{57} }{8} )

6 0
3 years ago
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