Answer:
12
Step-by-step explanation:
3*4/1 = 12/1 =12
57 - 4t > = 13.....subtract 57 from both sides
-4t > = 13 - 57
-4t > = - 44 ...divide both sides by -4, and change the inequality sign
t < = -44 / -4
t < = 11
u solve inequalities much like u do equations except for one very important rule. In an inequality, if u divide/multiply by a negative number, u have to change the inequality sign.
Answer:
Check below for the answer and explanation.
Step-by-step explanation:
Studying the central tendency alone is not sufficient because apart from calculating the value of the central point of a group of data ( which is what the measure of central tendency does), it is important to also understand the spread of these data about the average(mean) value.The measure of dispersion will help us to know the range of error that is recorded in both descriptive and inferential statistics and this will enable the statistician to assess the validity of the data generated from the experiment performed.
A small value of standard deviation indicates that each of the values in the dataset is close to the average (mean) value.
Step-by-step explanation:
add the like terms
2x - 14x = -71 -1
-12x = -72
12x = 72
x = 6
Answer:
see explanation
Step-by-step explanation:
Using the sum to product identity
cosx + cosy = 2cos(
)cos( 
)
Consider left side
(cos5A +cos3A) + (cos15A + cos7A)
= 2cos(
)cos(
) + 2cos( 
) cos( 
)
= 2cos(
) cos(
) + 2cos(
)cos( )
= 2cos4AcosA + 2cos11A cos4A ← factor out 2cos4A from both terms
= 2cos4A( cos11A + cosA) ← repeat the process
= 2cos4A( 2cos(
)cos(
)
= 2cos4A(2cos(
)cos(
)
= 2cos4A(2cos6A cos5A)
= 4cos4Acos5Acos6A
= right side , thus verified
