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Drupady [299]
2 years ago
8

Find the probability that exactly four of them retake this test.

Mathematics
1 answer:
IRISSAK [1]2 years ago
6 0

I believe it’s C, convert 0.188 into a fraction

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Please help me out on this :(( struggling !
Yuki888 [10]

Answer:

answer is B

Step-by-step explanation:

step by step explanation

3 0
3 years ago
Find the value of f(-9)
almond37 [142]

Answer: 2

Step-by-step explanation:

When x=-9, y=2. So, f(-9)=2.

7 0
2 years ago
X - 2/5= 7<br> find out what x is
nalin [4]

Answer:

see below

Step-by-step explanation:

x - 2/5= 7

Add 2/5 to each side

x - 2/5 + 2/5 = 7+2/5

x = 7 2/5

or if

( x-2) /5 = 7

Multiply each side by 5

(x-2) /5 *5 = 7*5

x-2 = 35

Add 2 to each side

x-2+2 = 35+2

x = 37

8 0
3 years ago
Read 2 more answers
3 Prove that<br>cos130°+cos 110+ cos10=0​
Evgesh-ka [11]

We know, cos A + cos B = 2cos(C+D)/2 × cos(C - D)/2

So,

cos 130 + cos 110 + cos 10

cos 130 + 2cos (110+10)/2 × cos( 110-10)/2

cos 130 + 2cos 60 × cos 50

cos ( 180 - 50 ) + 2cos60 cos 50

We know, cos ( 180 - A ) = -cos A

2cos 60 cos 50 - cos 50

Also, cos 60 = 0.5

2×0.5 cos 50 - cos50

cos 50 - cos 50

0  = RHS.

Hence proved

5 0
2 years ago
A city is building a fence around a rectangular playground if the perimeter of the playground is 104 feet and the length of one
34kurt

Answer:

20 ft

Step-by-step explanation:

We know that

Perimeter of rectangle = 2(l + w)

Let the width be w

=> 104 = 2(32 + w)

=> 104/2 = 32 + w

=> 52 = 32 + w

=> 52 - 32 = w

=> 20 = w

Hence z

Width of playground is 20 ft

8 0
2 years ago
Read 2 more answers
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