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Ad libitum [116K]
3 years ago
12

Work out these questions without a calculator and showing all working out

Mathematics
1 answer:
natima [27]3 years ago
3 0
1) 6÷0.2 = 30

If 6/2=3 then 6/0.2=30 as the decimal place shifts one place.

2)8÷0.1 = 80

8/1=8 so shift the decimal place over once to make 80.

3)9÷0.3 = 30

9/3=3 so shift the decimal place over once to get 30.

4)4÷0.04 = 100

4/4=1 so shift the decimal place over twice to get 100.

5)7÷0.002 = 3500

7/2=3.5 so shift the decimal place over three times to get 3500

6)0.718÷0.2 = 3.59

718/2=359 so shift the decimal over three places for the 0.718 and then back over once for the 0.2

7)0.0141÷0.003 = 4.7

141/3=47 so shift the decimal over our times for the 0.0141 and then back over three times for the 0.003

8)0.24÷0.012 = 20

24/12=2 so shift the decimal point over once twice for 0.24 then back over three times for 0.012

9)1.625÷0.0013 = 1250

1625/13=125 so shift the decimal point over three times for the 1.625 and then back four times for the 0.0013

10)47.1÷0.15 = 314

471/15=31.4 so shift the decimal point over once for the 47.1 and then back over twice for the 0.15.

Hope this helps :)
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The​ _________ of a hypothesis test is the probability ​(1minus beta​) of rejecting a false null hypothesis.
alex41 [277]

Answer:

Power

Step-by-step explanation:

An hypothesis is usually formulated at the beginning of research, it is usually in line with the problem statement and gives the possible outcome.

An hypothesis is either accepted or rejected.

Power in hypothesis is the probability of rejecting null hypothesis when it is false. It helps in making a correct decision by rejecting the null hypothesis when it is not true.

power ranges between 0 to 1 when it is close to 1 it is said to be very strong and has the probability of rejecting a null hypothesis when it is not true.

Power helps to avoid a type II error in statistics.

5 0
3 years ago
How to find the sum of each interior angle of a 20gon?
saw5 [17]

formula for interior angles of a polygon is 180 times the number of sides minus 2

 20 a 20gon has 20 sides, 20 -2 = 18, 180*18 = 3240

 sum of interior angles = 3240 degrees



please mark brainliest


8 0
4 years ago
Please answer this question.
lesantik [10]

Answer:

aₙ = aₙ₋₁ + n + 1

Step-by-step explanation:

a₁ = 2

a₂ = 2 + 2 + 1 = 5

a₃ = 5 + 3 + 1 = 9

a₄ = 9 + 4 + 1 = 14

a₅ = 14 + 5 + 1 = 20

4 0
3 years ago
Write the equation of the trigonometric graph.
Angelina_Jolie [31]

Answer:

started off from maximum, so f(x) = acos(bx)

max(f(x))=a=4

f(x)=4cos(bx)

the period is T = 2π

b=2π/T=2π/2π

b=1

f(x)=4cos(x)

6 0
2 years ago
HELP!!!!!!!!! ME!!!!!!!!! HELP!!!!
Gala2k [10]
Correct answer is the last one.
Function because for every x only one value of y,
not one-to-one because, 2 values of x have the same value of y.
7 0
4 years ago
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