1. Which of the following sets are rings with respect to the usual operations of addition and multiplication? If the set is a ring, is it also a field? 7 Z 7Z Z 18 Z18 Q ( √ 2 ) = { a + b √ 2 : a , b ∈ Q } Q(2)={a+b2:a, b∈Q} Q ( √ 2 , √ 3 ) = { a + b √ 2 + c √ 3 + d √ 6 : a , b , c , d ∈ Q }

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.

false

step-by-step explanation:

false : it can not go to 9 the highest that part can go is 7

here is your proof

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.