Which is true about the degree of the sum and difference of the polynomials 36 y-27y - tuý
o
o
both the sum and difference have a degree of 6.
both the sum and difference have a degree of 7.
the sum has a degree of 6, but the difference has a degree of 7.
the sum has a degree of 7, but the difference has a degree of 6.
o

9y-T9y−T

Step-by-step explanation:

1 Collect like terms.

(36y-27y)-T(36y−27y)−T

2 Simplify.

9y-T9y−T

Done

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places