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3 years ago

An equation contains at least one variable

Mathematics

2 answers:

Olin [163]3 years ago

8 0

Answer:

x+2=5

x+3=6

x^2 + 3x + 2 = 0

There are infinetly many equations that contain at least one variable!

Step-by-step explanation:

Umnica [9.8K]3 years ago

5 0

It’s true that a equation at least contains one variable

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8:54 a.m.

dimaraw [331]

Hello,

The two lights flash at the same time every 18 min
at 8:00 h=480 min =480+0*36
at 8:36 h=516 min =480+1*36
...
54 is not divisible by 36
60+12=72 = 2*36 yes
60+24=84 not
120+24=4*36 yes
180+18=198 not

So 2 times are correct 9:12 and 10:24
Answer G

5 0

3 years ago

23, 24 And 25 please. Thank you!

Vesna [10]

Step-by-step explanation:

23. area of rect,r = 11 x 3.5 = 38.5cmsq

area of tri, t = 6 x3.5/2 = 10.5 cmsq

area of shaded region, sr = r-t

=> sr = 38.5- 10.5 = 28.5cmsq

24. area of square, s = 10x10 = 100mmsq

area of circle, c = pi x 5^2 = 78.5mmsq

area of shaded region, sr = s - c

=> sr = 100- 78.5 = 22.5mmsq

25. area of circle, c = pi x 6^2 = 113.04insq

area of tri, t = 6x12/2 = 36insq

area of shaded region, sr = c - t

=> sr = 113.04 - 36 = 77.04insq

3 0

2 years ago

How could you solve for x in the problem 3x+7=-x-1

lukranit [14]

Hello there!

$3x+7=-x-1\\$

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓

First you had to subtract by 7 from both sides of the equation.

$3x+7-7=-x-1-7$

Simplify

$3x=-x-8$

Then you add by x from both sides of the equation.

$3x+x=-x-8+x$

Simplify

$4x=-8$

Divide by 4 from both sides of the equation.

$\frac{4x}{4}=\frac{-8}{4}$

Simplify it should be the correct answer.

$x=-2$

Answer⇒⇒⇒x=-2

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

7 0

2 years ago

HELP! Finding slope. Questions A B and C please <br> I’ll give “brainlyst” and 5 stars

inna [77]

$\bf (\stackrel{x_1}{10}~,~\stackrel{y_1}{14})\qquad
(\stackrel{x_2}{14}~,~\stackrel{y_2}{12})
\\\\\\
slope = m\implies
\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{12-14}{14-10}\implies \cfrac{-2}{4}\implies -\cfrac{1}{2}
\\\\\\
\begin{array}{|c|ll}
\cline{1-1}
\textit{point-slope form}\\
\cline{1-1}
\\
y-y_1=m(x-x_1)
\\\\
\cline{1-1}
\end{array}\implies y-14=-\cfrac{1}{2}(x-10)
\\\\[-0.35em]
~\dotfill$

$\bf y-14=-\cfrac{1}{2}x+5\implies y=-\cfrac{1}{2}x+19\impliedby
\begin{array}{|c|ll}
\cline{1-1}
slope-intercept~form\\
\cline{1-1}
\\
y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}}
\\\\
\cline{1-1}
\end{array}$

now, the x-axis has years after 1987, so 2007 is 20 years after 1987, 1987 + 20 = 2007, therefore x = 20, what is y?............ $\bf y=-\cfrac{1}{2}(20)+19$ .

and you know how much that is.

4 0

3 years ago

Rewrite the expression in the form z^n.<br> z^3/4 x z^2

grin007 [14]

Step-by-step explanation:

here's the answer to your question

7 0

3 years ago