Use the solution method to the system of equations 8x+5y=9 , y=x+7

Step-by-step explanation:

Given Equations:

  Equation:1

      Equation:2

Using substitution method:

Put the value of 'y' in Equation:1

Adding the like terms:

Subtracting '35' both sides:

Dividing '13' both sides:

Put the value of 'x' in Equation:2

The solution of the equation is:

x = -2

y = 5

Step-by-step explanation:

8x+5y=9 (i)

y=x+7 (ii)

Substitute (y = x + 7) in equation (I)

8x + 5(x + 7) = 9

8x + 5x + 35 = 9

13x + 35 = 9

13x = 9 - 35

13x = -26

Divide both sides by 13 to make x the subject :

x = -26 / 13

x = -2

Substitute x = -2 in equation (ii)

y = x + 7

y = -2 + 7

y = 5.

TO CHECK:

x = -2

y = 5

8x+5y=9

8(-2) + 5(5) =

-16 + 25 = 9.

9) i can't see the angle so whatever it is just do this: cos(angle) x hypotenuse and then use that answer and they hypotenuse and plug it into this: (answer you just got)^2 + b^2 = (hypotenuse)^2. the first answer will be the answer of the adjacent side and the second answer after this equation will be the opposite side.

10) y = 14 x = √147 or 12.12435565

11) x = 4.8

12) x = 4.2

13) x = 9.3

14) pq: 13.2

qr : 17.6

angle p: 53º

15) angle c: 54.3º

angle a: 35.7º

16) h = 21040

v = 1841

step-by-step explanation:

10) 7/sin(30) = 14 = y

7^2 + b^2 = 14^2

49 + b^2 = 196

b^2 = 196 - 49

√b^2 = √147

x = √147

11) cos(70) x 14 = 4.788282007

x = 4.8

12) tan(25) x 9 = 4.196768923

x = 4.2

13) sin(31) x 18 = 9.270685348

x = 9.3

14) pq: sin(37) x 22 = 13.23993051

pq: 13.2

qr: cos(37) x 22 = 17.56998122

qr : 17.6

angle p: 180 - (37 + 90) = 53º

15) cos-1(7/12) = 54.31466529

angle c: 54.3º

angle a: 180 - (90 + 54.31466529) = 35.68533471

angle a: 35.7º

16) 4 x 5280 = 21120

cos(5) x 21120

h = 21039.63202

h = 21040

sin(5) x 21120

v = 1840.729287

v = 1841

can you complete your sentence? i could !