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ratelena [41]
3 years ago
6

Grace sureyed 60 random students in her school.Of these 14 said they enjoy watching Dancing with the star.A total of 570 student

s in the school. How many these are expected to enjoy dancing with the Stars?
Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
4 0
I think it is 133 students that like Dancing with the stars
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Can someone help me with number 3 please??!!
ipn [44]
There are 2 way to solve this.

one using Pythagoras theorem and 2nd using trigonometry

so lets solve it by both

using Pythagoras theorem we know

base^2 + perpendicular^2 = hypotanes^2

6^2 + x^2 = 12^2

36 + x^2 = 144

x^2 = 144- 36 = 108

x = √(108) = √( 2×2×3×3×3)

= (2×3) √ (3) = 6 √3

so answer is option 2

bow lets use trigonometry

we know
sin theta = perpendicular / hypotanes
sin 60 = x /12
x = 12 × sin 60
we kNow sin 60 = √3/ 2
so
x = 12×√3 /2 = 6√3
7 0
3 years ago
HELP PLEASE! What does it mean if the probability is 20% that a spinner will stop in a red section? (I think it's C.)
Svetradugi [14.3K]
80% not stop on red so the answer would be c for that
8 0
4 years ago
A bag contains 48 skittles, identical except for color. There are twice as many yellow as red skittles and twice as many blue as
d1i1m1o1n [39]

Answer: x=17

Step-by-step explanation:

(5 + x)/(16 + x) = 2/3

Cross multiply to get:  

15+3x = 32 + 2x

3 0
4 years ago
If you spend $150 on 3 items and 1 item cost 50% more than the other 2 How much does it cost?
ryzh [129]
$75 Hope that helps.

8 0
4 years ago
A stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. How long are the two piece
marshall27 [118]

Hello from MrBillDoesMath!

Answer:

7/3 and 14/3 inches

Discussion:

Let P1 = "Piece 1" and "P2 = Piece 2", Then P2 = 2 * P1 and

P1 + P2 = 7       => as P2 = 2 P1

P1 + 2P1 = 7      =>

3P1 = 7             => divide both sides by 7

P1 = 7/3


Then P2 = 2 P1 - 2* (7/3) = 14/3

Thank you,

MrB

7 0
3 years ago
Read 2 more answers
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