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V125BC [204]
3 years ago
6

PLZ HELP

Mathematics
2 answers:
Papessa [141]3 years ago
7 0

Answer:

63.8%

Step-by-step explanation:

638/1000 × 100

63.8%

V125BC [204]3 years ago
4 0

Answer:

63.8%

Step-by-step explanation:

We see that the total number of people sampled was 1000.

Out of those 1000 people, 638 of them wore glasses.

Taking the percent means diving the part by the whole (part/whole), so:

638/1000 = 63.8%

Thus, we predict that about 63.8% of Americans would wear glasses.

Hope this helps!

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Use the grouping method to factor 2x3 + 6x2 - 7x- 21.
alexgriva [62]

Answer:

B. (x+3)(2x2−7)

Step-by-step explanation:

2x3 + 6x2 - 7x- 21

(2x3+6x2)(-7x-21)

2x2(x+3)-7(x+3)

(x+3)(2x2-7)

3 0
3 years ago
The Jackson family has 4 kids, 4 boys and 0 girls. Suppose that for each birth, the probability of a boy birth is 1/2, and the p
vovangra [49]

Answer:

1/4

Step-by-step explanation:

7 0
3 years ago
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Help me with this question please! it’s VERY URGENT and i dont know where to begin with❗️
puteri [66]

Answer:

|x|1 |  \: 2  | \: 3 |  \: 4  | \: 5 |   \\ |y| 5|  \: 4 \: | 3 \: |  2 |  1|

Step-by-step explaination:

We were told that:

x + y = 6

therefore to see if it is correct you can just input the values for x and y and see if they add up to 6 (add the vertical values). For example;when x = 1, y = 5 or when x = 2, y = 4

7 0
2 years ago
Karen earns a base salary of $2,000 a month. Additionally, she earns 20% commission on all of her sales. Which equation models h
astra-53 [7]

Answer: Our required equation will be s=2000+0.2d

Step-by-step explanation:

Since we have given that

Base salary of Karen = $2000

Rate of commission on all of her sales = 20%

We need to write a equation:

Let the total salary of her be 's'

Let the number of dollars of merchandise sold be 'd'

According to question, it becomes

s=2000+\frac{20}{100}\times d\\\\s=2000+0.2d

Hence, our required equation will be s=2000+0.2d

6 0
3 years ago
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Molly owes her brother $300.She works for $10 per hour as a checker at the local grocery store.Molly plans to repay her brother
gavmur [86]

Answer: The expression which represents the condition described is given as  4x=300

Step-by-step explanation:

Since we have given that

Amount that Molly owes her brother = $300

Let the number of hours she worked as a checker be x

Cost of per hour = $10

Amount she get after doing work for x hours is given by

10x

Rate of tax are taken out = 80%

So, amount she left with is given by

\frac{100-20}{100}\times 10x\\\\=\frac{80}{100}\times 10x\\\\=8x

So, Molly plans to repay her brother half of what she earns is given by

\frac{8x}{2}=4x

According to question,

4x=300\\\\x=\frac{300}{4}\\\\x=75\ hours

So, the expression which represents the condition described is given as

4x=300

3 0
4 years ago
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