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jonny [76]
1 year ago
11

The point (5,-2) is a solution to this system 5x-y=27 -3x+4y=-23. true or false?

Mathematics
1 answer:
zzz [600]1 year ago
8 0

Answer:

True

Step-by-step explanation:

To determine if (5, - 2 ) is a solution to the system , substitute the values of x and y into the left side of both equations and if equal to the right side then it is a solution.

5(5) - (- 2)  = 25 + 2 = 27 = right side

- 3(5) + 4(- 2) = - 15 - 8 = - 23 = right side

the point (5, - 2 ) makes both equations true then is a solution to the system.

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Will mark brainlist for anyone who answers these parts correctly and properly showed their work.
dalvyx [7]

Answer:

The rise is -5 the run is 4

Step-by-step explanation:

Slope (m) =

ΔY

ΔX

=

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=

-1.25

θ =  

arctan(

ΔY

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ΔX

=

308.65980825409°

ΔX = 2 – -2 = 4

ΔY = -1 – 4 = -5

Distance (d) = √ΔX2 + ΔY2 = √41 = 6.4031242374328

Equation of the line:

y = -1.25x + 1.5

or

y =  

-

5

x

4

+  

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When x=0, y = 1.5

When y=0, x = 1.2

Please give brainliest PLZPLZ

I really hope this helps have a beautiful day

3 0
3 years ago
The sum of twice a number and seven is twenty five
Mama L [17]
9

Because 9x2 is 18+7=25
3 0
3 years ago
6x – 2y = 10 2x + 3y = 51 solving the first equation above for y gives:
Masja [62]
The first equation is 6x - 2y = 10. To solve for y, you will use inverse (opposite) operations to undo what is happening to y.  Please see the steps below for the work.

6x - 2y = 10
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6 0
3 years ago
A summer camp had
trapecia [35]

The equation that relates the number of campers this year to the number of campers last year is c = 440 / 1.10

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<h3>What are percentages?</h3>

Percentage can be described as a fraction out of an amount that is usually expressed as a number out of hundred. Percentages are used to measure frequency.

<h3>How many campers attended last year?</h3>

The number of campers last year = number of campers this year / (1 + percentage increase)

440 / 1.1 = 400

To learn more about percentages, please check: brainly.com/question/25764815

3 0
2 years ago
the mean of 10 numbers is 1445. if 1500 is also added to this data what will be there new mean of 11 numbers
tamaranim1 [39]
Let the sum of the 10 numbers be x, then
x/ 10 = 1445
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New mean = (14450 + 1500)/11 = 15950/11 = 1450
7 0
3 years ago
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