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3 years ago

How do I solve 2x+y=10

Mathematics

2 answers:

ololo11 [35]3 years ago

7 0

X is 3 y is 4 hope this helps :)

ira [324]3 years ago

4 0

Hello :
the system is :
2x+y =10 ...(1)
x= 3y+4.....(2)
subst in (1) :
2(3y+4) + y = 10
6y +8 + y= 10
7y=2
y= 2/7
x= 3(2/7)+4 = 34/7

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Anarel [89]

$\bold{\huge{\underline{ Solution }}}$

<h3>Analysis of graph :-</h3>

We have given one graph which is plot between distance and time. where time is in minutes and distance is in seconds.

According to the graph

For the first 5 minute ( O to A) , The distance is continously increasing 2m / per minute .
For the 5 minute that is from 5 minute to 13 minute ( A to B) both marellize and her dog wally moving with the constant speed .
For next 3 minutes that is from 10 minutes to 13 minutes ( B to C) , The distance is continously decreasing with time .
For next 3 minutes that is from 13 to 16 minutes ( C to D) , Again they moved with constant speed .
For next 6 minute that is from 16 to 21 minutes ( D to E) . Again, There distance is increasing with time .
Again For next 4 minutes that is 21 to 25 minutes , they are moving with constant velocity .

<h3>Let's Begin :-</h3>

1) Between O and A

The marellize and wally when moving between O to A , The distance is constantly increasing with time.
The graph is Straight line

2) Between A and B

The marellize and wally when moving between A to B, The distance remains the same with time that is they moving with constant speed.
The graph is constant or steady

3) Between B to C

The marellize and wally when moving between B to C, The distance is constantly decreasing with time .
The graph is straight line but it follows decreasing function .

4) For covering the First 6 km ,

According to the graph,

For covering first 6 km, They took 3 minutes.

5) No, Marellize and wally walk does not from where they have started.

According to the graph

It is end at 5 m instead of 0m .

3 0

3 years ago

Kinda need help here

Marat540 [252]

I think the answe is A

5 0

2 years ago

Read 2 more answers

X^(2)-4x-17=0 Please show work step by step

Dimas [21]

Step-by-step explanation:

It seems here that they are asking us to solve for x

to do this we first need to factor

Since we can't factor this using the normal method we can instead do this

x^2 -4x-17=0

add 4 to both sides as it is a perfect square

x^2 - 4x + 4 = 17 +4

(x-2)^2 = sqrt 21

x-2 = ± 4.58

x -2 = 4.58 x-2 = -4.58

x= 6.58 x=-2.58

Or just say x=2+√21 or x=2−√21

7 0

3 years ago

Please I need help it's really hard

Vitek1552 [10]

I'd say angle A = angle B
arc tangent (angle B) = 150 / 555
arc tangent (angle B) = 0.2702702703 
angle B = 15.124 degrees

By the way 555 feet is the height of the Washington Monument.

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3 years ago

I need a answer to 77.5% of 13.270

den301095 [7]

Answer:

10.28425

Step-by-step explanation:

4 0

3 years ago

<br />How do I solve 2x+y=10