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Basile [38]
3 years ago
11

Jess observed that 60% of the people at a mall on a particular day shopped for clothes. If 2500 people at the mall did not shop

for clothes that day, the number of people who shopped for clothes that day was ______.
Mathematics
1 answer:
elixir [45]3 years ago
8 0

(3,750 people

60%=did shop

40%=did not shop =2,500

2,500/40  =  x/100

40x = 2,500x100

40x=250,000

x = 250,000/40

x=6,250

   6,250 =all people  at the mall

6,250 - 2,500 =3,750  (60%)


   OR

(2,500 x60)/40 = 3,750


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Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?
denis23 [38]

36 is must be added to the expression x² + 12x to make it

perfect-square trinomial

Step-by-step explanation:

The perfect-square trinomial x² + 2ax + a² = (x + a)², then

1. The first term in the trinomial is square the 1st term in the bracket

2. The middle term in the trinomial is the product of 1st , 2nd

    terms of the bracket and 2

3. The 3rd term in the trinomial is square the 2nd term in the bracket

∵ The expression is x² + 12x

∵ We must add the 3rd term which make it perfect-square trinomial

- Divide 12x by 2 to find the product of the 1st term and 2nd term

  in the bracket

∵ 12x ÷ 2 = 6x

∴ The 1st term is x and the 2nd term is 6 of the bracket

∵ The 3rd term in the trinomial is square the 2nd term in the bracket

∴ The 3rd term in the trinomial is 6² = 36

∴ x² + 12x + 36 = (x + 6)²

36 is must be added to the expression x² + 12x to make it

perfect-square trinomial

Learn more:

You can learn more about perfect-square trinomial in brainly.com/question/7932185

#LearnwithBrainly

4 0
3 years ago
50 is 25% of what number
Marat540 [252]
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5 0
3 years ago
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The equation x + y = z relates the whole numbers x, y, and z. How does z compare to x?
creativ13 [48]

Answer:

C. x is y less than z

Step-by-step explanation:

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by using transposition

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8 0
2 years ago
What is the answer to this question <br> 1/2 x -7=1/3(x-12)
timama [110]

Answer:

= 1 8 hope this helps!!! :)

Step-by-step explanation:

1 2 ⋅ −7 = 1 3 ( − 1 2 )

1 2 − 7 = 1 3 −1 2 )

1 2 − 7 = 1 3 − 1 2 )

Multiply by 1  

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6 0
2 years ago
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frez [133]

Answer: H_0 : \mu=50\\\\ H_1 : \mu\neq50

Step-by-step explanation:

An null hypothesis (H_0) is a statement of equality which shows that there is no statistical difference between the groups being tested.

An alternative hypothesis  (H_1) is a statement of inequality which shows that there is statistical difference between the groups being tested.

Let \mu be the population mean amount of garbage per bin .

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Thus , the appropriate null and alternative hypotheses :

H_0 : \mu=50\\\\ H_1 : \mu\neq50

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