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3 years ago

There are 17 students participating in a spelling bee. how many ways can the students who go first and second be chosen?

1 answer:

5 0

With 17 students there’s 17 possibilities for anyone to go first
For second, a person can’t be firsts and second so there is 16 possibilities for someone to go second

17*16=272

There’s 272 ways that the students who go first and second are chosen

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The sum of two numbers is 840. one of the numbers is 357. what is the other number?

nlexa [21]

Answer:

483

Step-by-step explanation:

840 minus 357 is 483

5 0

3 years ago

On a given day, 36 of the 445 students in a school were absent. What was the appproximate absentee rate that day?

Nata [24]

Answer: The approximate absentee rate that day would be 8.09%.

Step-by-step explanation:

Since we have given that

Number of students who were absent = 36

Total number of students = 445

We need to find the approximate absentee rate that day :

Rate of absentee of that day would be

$\dfrac{\text{Number of absentee}}{\text{Total number of students}}\times 100\\\\=\dfrac{36}{445}\times 100\\\\=8.09\%$

Hence, the approximate absentee rate that day would be 8.09%.

5 0

3 years ago

Write a slope- intercept equation for a line with given characters m=-4/5, passes through (-4,-5)

aleksandr82 [10.1K]

$\bf (\stackrel{x_1}{-4}~,~\stackrel{y_1}{-5})~\hspace{10em} \stackrel{slope}{m}\implies -\cfrac{4}{5} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-5)}=\stackrel{m}{-\cfrac{4}{5}}[x-\stackrel{x_1}{(-4)}]\implies y+5=-\cfrac{4}{5}(x+4) \\\\\\ y+5=-\cfrac{4}{5}x-\cfrac{16}{5}\implies y=-\cfrac{4}{5}x-\cfrac{16}{5}-5\implies y=-\cfrac{4}{5}x-\cfrac{41}{5}$

6 0

3 years ago

How is dividing mixed numbers related to dividing whole numbers

Taya2010 [7]

Answer:

Dividing mixed numbers is very similar to multiplying mixed numbers. You just add one step—after changing the divisor into an improper fraction, you then find its reciprocal and multiply. ... First step: Write the whole number and the mixed number as improper fractions.

Step-by-step explanation:

4 0

3 years ago

What slope would make the lines<br> parallel?<br> y = -3x + 9<br> y = [?]x + 4

Vladimir79 [104]

Answer:

- 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 3x + 9 ← is in slope- intercept form

with slope m = - 3

Parallel lines have equal slopes, thus

y = - 3x + 4 ← is the equation of a parallel line

4 0

3 years ago