In circle a shown below, the measure of ∠bad is 148°:

if m bc is 105°, what is m cd?
answers
74
148
43
31

Step-by-step explanation:

Remember that the subtended arc of a central angle has equal measure.

So, in this case the angle is 148°, that means the arc BD is 148°.

Now, if arc BC is 105°, it means the measure of arc CD is the difference

Therefore, the right answer is 43°.

step-by-step explanation:

abc

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.