She would have to weigh the fake coins and another bag of real coins to spot a difference, and then she would need to check another bag to see which was correct. Maybe thats right.

4 0

3 years ago

Add or subtract as indicated and write the result in standard form 3i+(-6-i)

yKpoI14uk [10]

Answer:

B: -6+2i

Step-by-step explanation:

3i + (-6 - i) = ⇒ open parenthesis
3i - 6 - i = ⇒ simplify
-6 + 2i ⇒ answer in standard form of a+bi

5 0

3 years ago

Three locations are marked next to a river. Points B and C are on the same side of the river, and point A is on the other side o

nlexa [21]

Answer:

74.31353

=74 m

Step-by-step explanation:

given that three locations are marked next to a river. Points B and C are on the same side of the river, and point A is on the other side of the river. To find the distance AB across a river, a distance BC of 241 meters is laid off on one side of the river. It is found that the angle at point B is 108.6° and the angle at point C is 14.9°.

we have information about triangle ABC as side BC =241, Angle B = 108.6 and angle C = 14.9 degrees.

Hence this is an obtuse scalene triangle.

Angle ∠A = 56.5° (III angle)

Using sine formula we get

$\frac{AB}{sin 14.6} =\frac{BC}{sin 56.5} \\AB = 74.31353$

So distance AB is 74 metres.

5 0

3 years ago

Joe deposit $4000 into an account that pays simple interest to rate of 2% per year how much interest would be paid in the first

fenix001 [56]

Answer is $240.00 because 2% of $4000 is 80. Multiply 80 by 3 years and you get $240.00

6 0

3 years ago