Please help!!!!

Mathematics

2 answers:

N76 [4]3 years ago

7 0

Answer:

9 + X = 16

Step-by-step explanation:

Given parameters:

Number of students on the roll = 9

Unknown:

The equation representing the class roster = ?

Solution:

Let the number of additional students that joined the class = x

Carol's class roster:

New number of students = number of students + additional students

16 = 9 + x

The solution of the problem is 9 + x = 16

natita [175]3 years ago

5 0

The last one, 9+x=16

You might be interested in

Multiply the following 11 x square Y and 2 x square y square

yaroslaw [1]

Answer:

$22 x^4y^3$

Step-by-step explanation:

$11x^2y\times 2x^2y^2\\$

by multiplying

$=11 \times 2 \times x^2 \timesx^2 \times y \times \times y^2\\=22 \times x^{2+2}y^{1+2}\\=22 x^4y^3$

3 0

4 years ago

The sum of 13 divided by a number and that number divided by 13

7nadin3 [17]

Sum means add

the number is x

13 divided by a number is 13/x
the number divided by the number is x/13

so
$\frac{13}{x}+\frac{x}{13}$
also can be simplified to
$\frac{169}{13x}+\frac{x^2}{13x}$ or
$\frac{x62+169}{13x}$

translated it is $\frac{13}{x}+\frac{x}{13}$ where x is the number

5 0

3 years ago

Evaluate the summation of negative 2 n minus 3, from n equals 2 to 10..

Alisiya [41]

$\bf \sum\limits_{n=2}^{10}~-2n-3$

so, let's first change the bounds from 1 to 9, so we'll be dropping the indices by 1, in order to do the variable "n".

however, let's use a variable hmmm say "k", where "k" is the value of "n" beginning at 1, thus k = n - 1.

however, if k = n - 1, then k + 1 = n. So let's use those fellows then,

$\bf \sum\limits_{n=2}^{10}~-2n-3\qquad 
\begin{cases}
k=n-1\\
k+1=n
\end{cases}\implies \sum\limits_{k=1}^{9}~-2\stackrel{n}{(k+1)}-3
\\\\\\
\sum\limits_{k=1}^{9}~-2k-2-3\implies \sum\limits_{k=1}^{9}~-2k-5\implies \sum\limits_{k=1}^{9}~-2k-\sum\limits_{k=1}^{9}~5
\\\\\\
-2\sum\limits_{k=1}^{9}~k-\sum\limits_{k=1}^{9}~5\implies -2\left( \cfrac{9(9+1)}{2} \right)\qquad -\qquad (9\cdot 5)
\\\\\\
-2(45)-45\implies -90-45\implies -135$

5 0

3 years ago

How to change 611/17 to improper fractions

Annette [7]

This is the answer ....