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Wewaii [24]
3 years ago
11

Cos(x/5)sin(x/5)=1/2[sin(2x/5) true or false

Mathematics
1 answer:
lukranit [14]3 years ago
6 0
Sin2x=2sinxcosx
sin2x/5=2sinx/5cosx/5
hence the nuber 2 multiply by cosx/5sinx/5 can be divided on the other side
hence its true
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Janine inflated a ball to a radius of 18cm and another ball to a radius of 12cm. How much greater was the volume of the air in t
bagirrra123 [75]

Answer:

17,182.08 cm³

Step-by-step explanation:


6 0
3 years ago
A matched-pairs t-test is NOT an appropriate way to analyze data consisting of which of the following? Measurements of annual in
o-na [289]

Answer:

Step-by-step explanation:

A matched pair t test is one in which the set of data is divided into two sets of data and the test is done to test the difference between the pairs. Sometimes this is called paired t test.\

This is done normally where one group of sample or population can be paired with other group of sample /population.

Hence

A .Measurements of annual income for each twin for 100 randomly selected pairs of twins -- True

B. Measurements of annual income for both individuals in pairs formed by matching 100 people from State A and 100 people from State B based on level of education -- True

C. Measurements of annual income for both individuals in pairs formed by assigning 100 people to pairs at random -- True

D. Measurements of annual income recorded for both spouses of 100 randomly selected married couples  --False here we cannot say paired as these people are not grouped under the same conditions.

7 0
3 years ago
Poisson Distribution LEARNING OBJECTIVE: Calculate the probability of a poisson distribution. 3.00 The average number of bridge
ira [324]

Answer:

the required probability is 0.09

Option  a) 0.09 is the correct Answer.

Step-by-step explanation:

Given that;

mean μ  = 7  

x = 4

the probability of exactly 4 bridge construction projects taking place at one time in this state = ?

Using the Poisson probability formula;

P( X=x ) = ( e^-μ × u^x) / x!

we substitute

P(X = 4) = (e⁻⁷ × 7⁴) / 4!

= 2.1894 / 24

= 0.0875 ≈ 0.09

Therefore the required probability is 0.09

Option  a) 0.09 is the correct Answer.

5 0
3 years ago
Which unit would best measure the weight of a pair of sissors?
yarga [219]
You would use ounces because scissors are too light to be measured in tons,pounds,or kilograms 
6 0
3 years ago
Read 2 more answers
Find the x- and y-intercepts of<br>5x-3y = 12.<br>x-intercept:<br>y-intercept:​
Lady bird [3.3K]

Answer:

-5x           -5x

-3y=-5x +12

/-5x    /-5x

-5-3y=x+12

  /-3     /-3

-5+y=x-4

+5      +5

y=x+1<---(y intercept(and it is its slop))

5x-3y = 12

   /-3y   /-3y

5x=-3y+12

/5     /5

x=-3y+2.4

/-3     /-3

-3+x=y+2.4

+3          +3

x=y+5.4<---(x intercept(not the slop because the y is not the first number))

8 0
3 years ago
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