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Dmitry [639]
3 years ago
10

A study was being conducted about how much college students spend on the purchase of their textbooks.

Mathematics
1 answer:
Mandarinka [93]3 years ago
5 0

Answer:

n=4

Step-by-step explanation:

because 4x10=40

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The clean up hitter on a baseball tean batted 1/4 of the runs the team scored. The hitter batted in 5 runs. Select the equation
strojnjashka [21]

Answer:

A. \frac{1}{4}n=5

The solution is: n=20

Step-by-step explanation:

1. You have the following information given in the problem above:

- The hitter batted \frac{1}{4} of the runs the team scored.

- The hitter batted in 5 runs.

2. If n is the number of run the team scored, then \frac{1}{4} of n must be equal to five runs batted by the hitter. Therefore, the equation is:

\frac{1}{4}n=5

3. Solve for n, as following:

\frac{1}{4}n=5\\n=(5)(4)\\n=20


6 0
3 years ago
9. Carlos walked 8 miles in 3 hours. Leah walked 14 miles in 6 hours. Are these rates
grin007 [14]

Answer:

no, not proportional

Step-by-step explanation:

set up a proportion and see if cross-products are equal:

8/3 = 14/6

cross-multiply:

(8)(6) ≠ (14)(3)

48 ≠ 42

6 0
3 years ago
I need help on number 2 please help me. Thanks. Happy holidays
Airida [17]
Here, Pages in books = Number of books * number of pages in one book

So, Pages of picture book = 10 * 25 = 250
& Pages of chapter book = 120 * 5 = 600

So, Number of Total pages = 250 + 600 = 850

So, Option (D) is your answer! Hope this helps!!
5 0
3 years ago
3x + 2 when x = 5<br> Pls
Kisachek [45]

Answer:

15 + 2 = 17

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=5x-%20%5Cdfrac%7B%20%5Csqrt%7B%209%20%7B%20x%20%7D%5E%7B%202%20%7D%20-6x%2B1%20%5Cphantom%7B%5
Morgarella [4.7K]

Answer:

=5x+1          or          =5x-1

Step-by-step explanation:

One is given the following equation:

5x-\frac{\sqrt{9x^2-6x+1}}{1-3x}

The problem asks one to simplify the expression, the first step in solving this equation is to factor the equation.  Rewrite the numerator and denominator of the fraction as the product of two expressions. Remember the factoring patterns:

(a-b)^2=a^2-2ab+b^2

=5x-\frac{\sqrt{9x^2-6x+1}}{1-3x}

=5x-\frac{\sqrt{(3x-1)^2}}{-(3x-1)}

Now simplify the numerator. Remember, taking the square root of a squared value is the same as taking the absolute value of the expression,

=5x-\frac{\sqrt{(3x-1)^2}}{1-3x}

=5x-\frac{|3x-1|}{-(3x-1)}

Rewrite the expression without the absolute value sign in the numerator. Remember the general rule for removing the absolute value sign:

|a-b|\\=a -b           or           (-a-b) = b-a

=5x-\frac{|3x-1|}{-(3x-1)}

=5x-\frac{3x-1}{-(3x-1)}          or          =5x-\frac{-(3x-1)}{-(3x-1)}

Simplify both expressions, reduce by canceling out common terms in both the numerator and the denominator,

=5x-\frac{3x-1}{-(3x-1)}          or          =5x-\frac{-(3x-1)}{-(3x-1)}

=5x-(-1)          or          =5x-(1)

Simplify further by rewriting the expression without the parenthesis, remember to distribute the sign outside the parenthesis by the terms inside of the parenthesis; note that negative times negative equals positive.

=5x-(-1)          or          =5x-(1)

=5x+1          or          =5x-1

6 0
3 years ago
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