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prisoha [69]
3 years ago
6

Solve for x. 2cosxsinx=0

Mathematics
1 answer:
ipn [44]3 years ago
8 0
The first step would be to divde both sides by 2. then you would have to find where cos(x) times sin(x) would equal 0. to do that either cos(x) OR sin(x) would heve to be zero becasue any number times zero equals zero. n is an inteager (whole Number) cos(x) equals pi/2 plus pi times n.2cos(x)sin(x)=0 \\ cos(x)sin(x)=0 \\ cos(x)=0  \\( \pi /2) +  \pi n\\ sin(x)=0 \\ 0 + \pi n
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A 500 g bag of sugar costs N195. A 25 kg
Gala2k [10]

Answer:

40 N

Step-by-step explanation:

To know which bag is cheaper, you have to compare both package price as cost per kilograms of sugar. Then we can find how much we can save by finding the difference between the two values

The 500g sugar package cost is N195. Every kg is equal to 1000g, so the price will be: 195N/ (500g*1kg/1000g)= 390 N/kg

The 25kg sugar package cost is N8750.  so the price will be: 8750N/25kg= 350 N/kg

The amount you save per kg if you buy 25kg package instead of 500g will be: 390 N/kg - 350N/kg = 40 N/kg

6 0
3 years ago
An observer is located at 900 feet from a building. The oberver notices a helicopter flying at a 49° angle of elevation from his
klio [65]

tan(49)=h/900 or h = 900 x tan(49)

5 0
3 years ago
A statistics student records the servings of vegetables Natalia and Zane eat each weekday. The table shows the results.
Softa [21]

Answer:

The Answer is D)

Step-by-step explanation:

3 0
3 years ago
Each score in a set of data is multiplied by 3, and then 4 is subtracted from the result. If the original mean is 10 and the ori
olganol [36]

The new mean and standard deviation is 26 and 15, when each score in data set is multiplied by 5 and then 7 is added.

According to the question,

Original mean is 10 and original standard deviation is 5 . In order to find to new mean and standard deviation when each score in data set is multiplied by 5 and then 7 is added.

First "change of scale" when every score in a data set is multiplied by a constant, its mean and standard deviation is multiplied by a same constant.

Mean: 10*3 = 30

Standard deviation: 5*3 = 15

Secondly "change of origin" when every score in a data set by a constant, its mean get  added or subtracted by the same constant and standard deviation remains constant.

Applying change of origin in the above mean and standard deviation  

Mean: 30 - 4 = 26

Standard deviation: Remains same = 15

Hence, the new mean and standard deviation is 26 and 15, when each score in data set is multiplied by 5 and then 7 is added.

Learn more about Mean and standard deviation here

brainly.com/question/26841432

#SPJ4

5 0
2 years ago
Need help asap please! If f(x)=7x and g(x)=3x+1 find (f o g)(x) A.10x+1 B.21x+1 C.21x^2+7x D.21x+7
Elanso [62]

Replace the x in 7x by (3x + 1):-

(f o g)(x) = 7 * (3x + 1)

= 21x + 7   which is choice D.

3 0
3 years ago
Read 2 more answers
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