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blsea [12.9K]
3 years ago
9

A study showed that a high school junior enrolled in two AP classes studies 25 hours per week with a standard deviation of 6.2 h

ours. If the school had
300 juniors enrolled in two AP classes, how many would you expect to find who studied more than 25 hours per week? ROUND YOUR ANSWER TO
THE NEAREST WHOLE NUMBER!
Mathematics
1 answer:
NeTakaya3 years ago
4 0
Look man I don’t really know the answer my bad
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Find the product using suitable identities.<br> a) <img src="https://tex.z-dn.net/?f=%28%5Cfrac%7Bx%7D%7B3%7D%20%20-%206%29%5E%7
Vesna [10]

Answer:

\frac{x^2}{9} - 4x + 36

Step-by-step explanation:

(\frac{x}{3} - 6)² = (\frac{x}{3} - 6)(\frac{x}{3} - 6)

Each term in the second factor is multiplied by each term in the firs t factor, that is

\frac{x}{3}(\frac{x}{3} - 6) - 6(\frac{x}{3} - 6)

Distribute both parenthesis

= \frac{x^2}{9} - 2x - 2x + 36 ← collect like terms

= \frac{x^2}{9} - 4x + 36

5 0
4 years ago
What fractions are equivalent to 6/12
kirill [66]

Answer:

Step-by-step explanation:

1

2

is equivalent to 6

12

because 1 x 12 = 2 x 6 = 12

2

4

is equivalent to 6

12

because 2 x 12 = 4 x 6 = 24

3

6

is equivalent to 6

12

because 3 x 12 = 6 x 6 = 36

4

8

is equivalent to 6

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because 4 x 12 = 8 x 6 = 48

7 0
3 years ago
Which property justifies the following statement?<br><br> 5(7z − 3y) = 35z − 15y
nlexa [21]
Maybe distributive....
6 0
3 years ago
Varuns monthly income is 18000 he spends 1/5 of his income for house rent and 3/5 of his income on other expenditure how much do
m_a_m_a [10]

Answer:

$3600

Step-by-step explanation:

Given:

Total income T = $18,000

Fraction of income spent on house rent f1 = 1/5

Fraction of income spent on other expenditures f2 = 3/5

Fraction of income saved is;

f = 1 - (1/5+3/5) = 1 - 4/5

f = 1/5

The Amount he save is A;

A = fraction saved × total amount = f × T

Substituting the values

A = 1/5 × $18,000

A = $3,600

The Amount he save is $3,600

3 0
3 years ago
Read 2 more answers
A= -1, b= -5, c = -2/3 be+9c - a
hjlf

Answer:

Step-by-step explanation:

1) First step is writing the Equation out clearly

be - 9c - a

2) Substituting the given values ; a,b & C

3) -5e + 9(-2/3) - (-1)

4) -5e-5 (answer)

Since we were not given the value for e

8 0
3 years ago
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