2+4z-18
change it so it's an equation
2+4z-18=0
then get 4z alone on one side by subtracting 4z from both sides
2-18=-4z
-16= -4z
divide both sides by -4
a negative divided by a negative becomes positive
4 =z
plug it in
2+4(4)-18
4x4 is 16
2+16-18=0
0=0
the same can be done for the second one 2+k-8
make it 2+k-8=0
move the k to get it alone so subtract k from both sides
2-8=-1k
-6 = -1K
you can divide by K to make K=6
plug in 2+6-8=0
0=0
Answer:
$2479.02
Step-by-step explanation:
The invested amount is $2000 at a rate of 2.4% which compounds semiannually.
Therefore, the semiannual interest rate is
%.
Then the principal is compounded (9 × 2) = 18 times within a period of 9 years.
If there is no withdrawal from the account, then after 9 years the sum will become
dollars {Rounded to the nearest cent} (Answer)
Technically it would be 61 because 60 (numbers of cars) times 5 (fee per car) = 300 so at 61 he would be makings more in fees than his fixed salary
Answer:
Step-by-step explanation:
You can use the Law of Cosines, if only one of which is missing: three sides and one angle. Hence, if the known properties of the triangle is SSS(side-side-side) or SAS (side-angle-side), this law is applicable.
You can use the Law of Sines if you want to equate the ratio of the sine of an angle and its opposite side. This can be used if the known properties of the triangle is ASA(angle-side-angle) or SAS.
The ambiguous case is the SAS triangle. This could be easily solved using Law of Sines than Law of Cosines. Take for example: side a = 4, side b = 10, angle A = 23°. Then, we can determine angle B through Sine Law.
sin 23°/4 = sin B/10
B = 77.64°