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Evgen [1.6K]
2 years ago
14

How to work this out ?

Mathematics
1 answer:
Free_Kalibri [48]2 years ago
6 0

Answer:

The solution is (-3, -2).

Step-by-step explanation:

Please note that if you simply add these 2 equations together, 9x - 9x = 0, and you are then left with -5y = 10.  Thus, y = -2.  Subbing -2 for y in the first equation, we get 9x - 8(-2) = -11, or 9x + 16 = -11.

Subtracting 16 from both sides, we get 9x = -27, so that x = -3.

The solution is (-3, -2).


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Answer and explanation please?
nignag [31]
The answer would be A. m= -3/5 and b=-4/5
"m= -5-1 divided by 7--3
or, -6/10
or, -3/5.

to find the (B)

<span><span>(-3,1). y=mx+b or 1=-3/5 × -3+b, or solving for b: b=1-(-3/5)(-3). b=-4/5.</span><span>(7,-5). y=mx+b or -5=-3/5 × 7+b, or solving for b: b=-5-(-3/5)(7). b=-4/5.</span></span>See! In both cases we got the same value for b. And this completes our problem.

<span><span>The equation of the line that passes through the points(-3,1) and (7,-5)is</span><span>y=-3/5x-4/5"</span>
Source: webmath</span>
5 0
3 years ago
What is the volume of the rectangular prism?
Bingel [31]
The answer is B. 60 cubic inches
5 x 6 x 2 = 60
8 0
3 years ago
Membership to a national running club is shown in the table. Which answer describes the average rate of change from Year 3 to Ye
Nataly [62]

Answer:

Membership decreased by an average of 6,600 people per year from Year 3 to Year 5

Step-by-step explanation:

The average rate of change from Year 3 to Year 5 will be given by the slope of the line joining the points;

(3, 96.8) and (5, 83.6)

The slope of a line given two points is calculated as;

( change in y)/( change in x)

In this case y is the number of members for a given year x.

average rate of change = (83.6-96.8)/(5-3)

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Since the number of members is given in thousands, we have;

-6,600

The negative sign implies a decrease in the number of members. Therefore, membership decreased by an average of 6,600 people per year from Year 3 to Year 5

8 0
3 years ago
HELPPPP PLEASE IK ITS LONG BUT PLEASE HELP <br> 9-12
sergey [27]
Girl i don’t know but i hope you find your answer boo
6 0
3 years ago
Use the substitution method to solve the system of equations. Is there a unique solution, no solution, or infinitely many soluti
olga_2 [115]
I hope this helps you


-4/3x+y=15


-12x-4y= -60


12x+4y=60


0=0


no solution
6 0
3 years ago
Read 2 more answers
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