What is three more than the product of a number and 7 equals 8 . use the variable x for the unknown number?

Mathematics

1 answer:

Anastaziya [24]3 years ago

7 0

(7x) + 3 = 8
subtract both sides by 3.

7x = 5
divide both sides by 7 to isolate the variable, x.

x = 5/7

You might be interested in

Find the sum 7a/a+5 + a/a-2

IRINA_888 [86]

$\dfrac{7a}{a+5}+\dfrac{a}{a-2} \\\dfrac{7a(a-2)+a(a+5)}{(a+5)(a-2)} \\\boxed{\dfrac{a(8a-9)}{(a+5)(a-2)}}$

Hope this helps.

8 0

3 years ago

How would I find the length or width using area

RUDIKE [14]

I hope that this helps you.

4 0

3 years ago

PLEASE ANSWER THIS QUESTION !! 20 POINTS AND BRAINLIEST !!

lutik1710 [3]

Answer:

Step-by-step explanation:

If they have no solutions, the lines must not intersect.

If they don't intersect, they must be parallel

8 0

3 years ago

Read 2 more answers

Use the graph to answer the question.

yulyashka [42]

The equation (X-4)2 + (y+1)2 = 25 best describes the circle.

3 0

2 years ago

Find the equation of the linear function represented by the table below in slope-

7nadin3 [17]

to get the equation of any straight line we simply need two points off of it, hmm let's get two from this table

$\begin{array}{|cc|ll} \cline{1-2} x&y\\ \cline{1-2} 0&4\\ 1&10\\ 2&16\\ 3&22\\ 4&28\\ \cline{1-2} \end{array} \begin{array}{llll} \\ \leftarrow \textit{let's use this point}\\\\ \leftarrow \textit{and this point} \end{array}$

$(\stackrel{x_1}{1}~,~\stackrel{y_1}{10})\qquad (\stackrel{x_2}{3}~,~\stackrel{y_2}{22}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{22}-\stackrel{y1}{10}}}{\underset{run} {\underset{x_2}{3}-\underset{x_1}{1}}}\implies \cfrac{12}{2}\implies 6 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{10}=\stackrel{m}{6}(x-\stackrel{x_1}{1}) \\\\\\ y-10=6x-6\implies y=6x+4$

7 0

2 years ago