What is the difference of (-3.4x+4.7)-(3+2.9x)? -0.5x+1.7
O -6.3x-1.7
0 -0.5x-1.7
O -6.3x+1.7
please help

option 4

Step-by-step explanation:

-3.4x + 4.7 - (3 + 2.9x) = -3.4x + 4.7 - 3  - 2.9x  (combine like terms)

                                   = -3.4x - 2.9x + 4.7 - 3

                                  = - 6.3x + 1.7

If two number have same sign, add and put the common sign for the answer.

If two numbers have different sign, subtract and the answer will have the sign of the bigger number

The measurement of ∠SQR is 70.9 degrees

Step-by-step explanation:

To find the total angle of any polygon, use the formula = 180(n-2)

The "n" is number of sides a polygon have. Triangle has 3 sides.

therefore n=3, substitute as n=3 in the formula above.

Total angle in a triangle =180(3-2)= 180(1)= 180 degrees

The sum of the angles in a triangle must equal to 180°

∠QRS+∠RSQ+∠SQR=180°

80°+29.1°+∠SQR= 180°

∠SQR= 180°-109.1°

The angle SQR= 70.9°