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dalvyx [7]
3 years ago
7

Solve using the substitution method c + 3d = 8 c= 4d - 6 ​

Mathematics
2 answers:
mariarad [96]3 years ago
5 0

Answer:

c= 2, d=2

Step-by-step explanation:

Alexxandr [17]3 years ago
3 0

Answer:c=2 d=2

Step-by-step explanation:

c+3d=8

c=4d-6

c=4 x 2-6=2

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Least common demonstrator of 2/3 and 1/4
torisob [31]

Answer:

12

Step-by-step explanation:

Least common multiples of 3, 6, 9, 12,

Least common multiples of 4, 8, 12

If you want me to work out the equation comment under my answer  

Hope this helps

Mark as brainliest

8 0
3 years ago
I have to find the slope and the y-intersect from these graphs. It would mean alot if someone could help with at least one of th
Sati [7]

Answer:

Alright bear with me, this is gonna be a long one.

<u>The Y INTERCEPT</u>

So the y-intercept is going to be where the line intersects the Y-AXIS. The y-axis is the vertical part of the graph with the numbers on it.

So, for the first one, the line goes through the origin which means that that the y intercept is going to be (0,0)

The next one, the line intersects the y-axis at (0,1)

Here's a tip: the y-intercept will always have 0 as it's x coordinate.

<u>The Slope</u>

Alright, the slope of a vertical line can be found using an equation. Most typically people will describe the slope as RISE/RUN meaning how many units you move up "rise" and how many units you move horizontally "run" to touch the line. Of course, it's easier when you can identify points.

So to make this a little bit easier to understand, I will show you how to use the equation to find the slope.

\frac{y2-y1}{x2-x1}

So for this equation, what you need is two coordinates. So for the first graph, I'm going to use the points (0,0) and (1,3)

\frac{3-0}{1-0}

So we make the three y2 because it's the second y coordinate and the y1 would be 0. Same applies to the x coordinates but use the x values.

the slope for the first graph would be 3/1

<u>FOR THE SECOND GRAPH</u>

\frac{y2-y1}{x2-x1}

Here's our equation now pick two points. I'll be using (-5,4) and (0,1)

\frac{1-4}{0-(-5)}

Don't forget that a negative-a negative = positive

which will leave you with

\frac{-3}{5}

since it can't be simplified any further, your slope is -3/5.

I hope I was able to help you understand this a bit better :)  

3 0
4 years ago
What is the common ratio for this geometric sequence?
Anastasy [175]

Answer:

<h2>A. 1/3</h2>

Step-by-step explanation:

\text{The common ratio of a geometric sequence}\ a_n:\\\\r=\dfrac{a_{n+1}}{a_n}\\\\\text{We divide next term by the previous one.}\\\\r=\dfrac{9}{27}=\dfrac{9:9}{27:9}=\dfrac{1}{3}\\\\r=\dfrac{3}{9}=\dfrac{3:3}{9:3}=\dfrac{1}{3}\\\\r=\dfrac{1}{3}\\\vdots

3 0
4 years ago
Read 2 more answers
E^4x– 6 e ^2x – 55=0
WITCHER [35]

Answer:

Hi there!

The answer to this question is: 1.198945

Step-by-step explanation:

Treat eˣ like a "x" if you can temporarily replace eˣ with "x"

so now it's (x²- 11) (x²+6)=0 then replace "x" with eˣ

then you should get e²ˣ = 11 and e²ˣ = -6

next in order to solve for x, you must ln both sides

and you get 2x = ln(11) and you should get 1.198945

****keep in mind: e²ˣ = -6 will be undefined when you ln both sides

6 0
3 years ago
A rectangle has a height of 4 and a width of 2x2 – 2.
svetlana [45]

Answer:

area of a rectangle =WxH

given

H=4

W=2x2-2

=2

therefore

A=4x2

=8

5 0
3 years ago
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