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Mekhanik [1.2K]
2 years ago
5

Find the missing number.

Mathematics
1 answer:
Vinil7 [7]2 years ago
4 0

Answer: 20%

Step-by-step explanation:

If we let the original amount be x, then after increasing it by 25%, we now have 1.25x

To get this back to x, we need to do 1.25x*(something) = x

this gives us that something = 1/1.25 = 0.8

meaning you need to decrease it by 100% - 80% = 20%

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Lostsunrise [7]

Answer:

4 different ways

Step-by-step explanation:

Total number of children = 4

Distribution of the 4 children :

Number of boys = 3 ; Number of girls = 1

Boy = B ; Girl = G

Possible combinations :

BBBG ; GBBB ; BBGB ; BGBB

From the pascal triangle number of e; number of outcomes = 2

Having exactly 3 boys and 1 girl

Hence, of any of the 4 four total children, 3 must be boys and 1 girl ;

7 0
3 years ago
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Archy [21]

Answer:

b

Step-by-step explanation:

In general

Given

y = f(x) then y = f(Cx) is a horizontal stretch/ compression in the x- direction

• If C > 1 then compression

• If 0 < C < 1 then stretch

Consider corresponding points on the 2 graphs

(2, 2 ) → (4, 2 )

(4, - 2 ) → (8, - 2 )

Indicating a stretch in the x- direction.

y = f(\frac{x}{2} ) with C = \frac{1}{2} , that is 0 < C < 1

stretches the graph in the x- direction by a factor of 2

Thus

y = f(\frac{x}{2} ) → b

5 0
3 years ago
You are a bank teller, and your cash drawer
matrenka [14]

Answer:

I dont know.

Step-by-step explanation:

3 0
3 years ago
Can anyone help me with this algebra problem ?
Ann [662]
The top right one is not a function
7 0
3 years ago
Find the value of the x.
Lina20 [59]

Step-by-step explanation:

By angle sum property

7x-41+5x-12+2x+9 = 180

14x -44 =180

14x =224

x= 224/14

x= 16°

7 0
2 years ago
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