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hodyreva [135]
3 years ago
13

Find the area of the sector with a central angle of 120° and a radius of 8 inches. leave in terms of ?.

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
7 0
I'm assumig you meant ?=pi

so the area of the sector would be the area of the circle times the fraction of the circle that is

the fraction of the circle would be degrees/360 since 360 degrees in a circle
and area of course is pir^2

so
r=8
degrees=120
so
area=pi8^2 times 120/360
area=64pi times 1/3
area=64pi/3
I think you mean 64/3 pi in²
so D is the answer
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Suppose that 4.5% of the people in the world have a particular genetic defect and that a screening test is 81% accurate for peop
barxatty [35]
0.955 * 1300 = 1241.5. 0.88 * 1241.5 = 1092.52 Round 1092.52 to 1093. That's the only answer I can think of.
4 0
3 years ago
7x + 31= 8x- 1 (27x+3)<br> -<br> 3
Tresset [83]

AnswEr :

⠀⠀⠀⠀

The value of q is -1.42

⠀⠀⠀⠀

<u>______________________</u>

⠀⠀⠀⠀

➤ How to solve ?

⠀⠀⠀⠀

That's quite easy but you need to recall the BODMAS rule .

⠀⠀⠀⠀

BODMAS rule states the correct sequence to solve an equation . First we need to solve the bracket part then solve if any of is present moving further to division then multiplication carrying with addition atlast subtraction

⠀⠀⠀⠀

In this equation we will solve the bracket then we will apply further BODMAS rule

⠀⠀⠀⠀

<u>━━━━━━━━━━━━━━━━━</u>

SolutiOn :

➠ 7x + 31 = 8x - 1 ( 27x + 3 ) -3

➠ 7x + 31 = 8x - 27x - 3 - 3

Now, we will bring the variable on left hand side and constants on right hand side

➠ 7x - 8x + 27x = - 31 - 3 - 3

➠ 26x = -37

➠ x = -37/ 26

➠ x = - 1.42

∴ The value of x is -1.42 .

<u>━━━━━━━━━━━━━━━━━</u>

3 0
3 years ago
Problem number 7 trigonometry
Natasha_Volkova [10]
7) - 1

tan <BAD = BD / AD

BC = √(64 + 36)
BC = √100
BC = 10

now you can solve BD
BD/6 = 6/10
BD = 6*6 / 10
BD = 36/10
BD = 3.6

AD = √36 - 12.96
AD =  √23.04
AD = 4.8

tan <BAD = BD / AD
tan <BAD = 3.6 / 4.8
tan <BAD = 0.75

7) - 2

cos <DAC + cos <DAB

as you know cos = Adj / Hypo

cos <DAC = AD/AC
cos <DAC = 4.8 / 8
cos <DAC = 0.6

cos <DAB = AD / AB
cos <DAB = 4.8/6
cos <DAB = 0.8

so
cos <DAC + cos <DAB = 0.6 + 0.8
cos <DAC + cos <DAB = 1.4

hope it helps


8 0
3 years ago
Someone help me with this one​
frosja888 [35]

Answer:

2/3

Step-by-step explanation:

20% = 12

48

1/6 = 8

left = 40

40/60 = 4/6

4/6 = 2/3

3 0
4 years ago
Read 2 more answers
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FrozenT [24]
Well the area of the parking space is 126 FT squared. The formula for a parallelogram is b*h

18*7

The car parking space area is 96 FT squared. Again the formula is b*h


16*6
7 0
4 years ago
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