Determine if the biconditional is true. if false, give a counterexample.
an angle is a right angle if and only if it is not obtuse.

false; m∠1 = 120°, ∠1 is not a right angle

false; m∠1 = 70°, ∠1 is not a right angle

false; m∠1 = 90°, ∠1 is not an obtuse angle

true

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41