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Firdavs [7]
3 years ago
5

Please help immediately

Mathematics
1 answer:
Softa [21]3 years ago
5 0
Let a = arc distance of the sector
let r = radius of the circle


a + 2r = 8
a = (8-2r)

Find the portion of the circle in the sector (arc/circumference)

a/2r •r

Replace a with ( 8-2r)

(8-2r/2•square root • r)

Simply

(8-r/square root •r)

( 4-r) / square root R


Find the area of the sector
(4-r)/square root •r • square root •r ^2

Cancel pi*r


A = (4-r) * r
A = -r^2 + 4r

Max of this quadratic equation occurs at the axis of symmetry; x=-b/(2a)


R=-4/2•(-1)

R= 2 cm

Find the max area

A = -2^2 + 8(2)
A = -4+ 16
A = 12 sq cm max area
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Suppose a pack of candy bars has 4 bars. Each bar weighs 3.38 ounces. How much does the pack weigh?
drek231 [11]

Answer:

13.52 ounces I think...

Step-by-step explanation:

4x3.38 subtract the decimal and add it again...

5 0
3 years ago
1. Which of the following points is a solution of y > |x| + 5?
Dennis_Churaev [7]
1.   iThis  is shaped like a V with its vertex at the point (0,5)
( its ( 1,7)

2. -3 <= -1-1 = =2

so its (-1, -3)

7 0
3 years ago
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Which expressions are differences of squares? Select each correct answer
garri49 [273]
For this ones the second value is always negative so A is not correct. Also they have to have an exact square root which 50 doesn't. So the answers are B and C
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4 0
3 years ago
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Alex, Stephen and Bridget share some sweets in the ratio 4:1:1. Alex gets 36 sweets. How many sweets are there altogether?
STALIN [3.7K]

Answer:

There are 54 total sweets  

Step-by-step explanation:

Alex: Stephen : Bridget : total

4:          1          :      1       : 4+1+1 = 6

Alex gets 36

36/4 = 9

Multiply each number by 9

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4*9:          1*9   :      1*9    :    6*9

36:               9 :         9     :   54

There are 54 total sweets  

4 0
3 years ago
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There are 6060 tables in a restaurant, with 25%25% of them seating 22 people. The tables remaining seat 44 people. How many seat
mestny [16]
60 tables total. 25% of those seat 22 people. 60 X 25% = 15. So 15 of the tables seat 22 people. 
The remaining tables (60 tables - 15 tables = 45 tables) seat 44 people. 

So you have:
(15 tables X 22 seats) + (45 tables X 44 seats) = total seats. 
2310 TOTAL seats. 

6 0
3 years ago
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