MATHEMATICS MIDDLE SCHOOL

2 1/2 divided by 1 2/6

Answers

Answer 1

Answer:

Answer:

The answer is 8/9.

Step-by-step explanation:

Turn 2 1/2 in to 3/2 and turn 1 1/3 in to 4/3 then turn 3/2 int 2/3 and multiply 2/3 by 4/3 and you get 8/9.

Hope this helped. have a nice day!

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Find the average of
1.6,0.8,1.2

Answers

Add all three and then divide by the number of varibles which in this case is three. Answer is 1.2

1.2 is the average.I did:1,6+0.8+1.2=3.6. 3.6 divided by 3 is 1.2 hope my answer helped.

It is believed that the percentage of people who support candidate A is 56%. A sample of size 100 indicated that 40 people support candidate A. Is there evidence at an alpha level of 10% to conclude that the percentage of people who support candidate A has changed?

Answers

Given data:

Sample size $=100$

Sample proportion of people support candidate A:

$p=(40)/(100)=0.40$

Population proportion of people support Candidate A :

$P=(56)/(100)=0.56$

Check the condition: $nP>10$ and $n(1-P)>10.$

$nP=100*0.40=40>10$

$n(1-P)=100*0.60=60>10$

Null Hyposthesis: $H_0: P=0.56$

Alternative Hypothesis: $H_\alpha :P\neq 0.40$

The test statistics:

$z=\frac{p-P}{\sqrt{(P(1-P))/(n)}}$

Plug in p=0.56, P=0.40 and n=100 in the above formula,

$z=\frac{0.56-0.40}{\sqrt{(0.40(1-0.40))/(100)}}$

$z=\frac{0.56-0.40}{\sqrt{(0.40(1-0.40))/(100)}}=3.2659$

The table value of z at 10% of significance level is 1.28

Table value is less than the calculated value.

Hence $H_0$ is rejected at 10% level.

Therefore there is the evidence at an alpha level of 10% to conclude that the percentage of people who support candidate A has changed.

You roll a six sided die two times what is the probability the two numbers are one apart

Answers

2/6 or 2/3 simplify the fraction

What the sum of two numbers is 25 the number is twice the second number plus seven what are the two numbers

Answers

Step-by-step explanation:

x+y=25

x=2y+7

x+y=25

(2y+7)+y=25

3y+7=25

-7. -7

3y=18

÷3. ÷3

y=6

x=19

19 and 6

is this correct?: data can be arranged in visual displays called _graphs_ to make identifying trends easier. (or would it be bar graphs..?

Answers

This is correct. Data visualisation is done through the creation of graphs, which are simply visual representations of data that show relationships between variables. Bar graphs are a particular type of graph. Others include scatter graphs, line graphs and pie charts.

Can u please answer my question

Answers

1st Step:We should first change them all to have a common denominator.
2nd Step:We should find the least common multiple
4×1=4 8×1=8 16×1=16
4×2=8 8×2=16
4×3=12
4×4=16
LCM is 16

$(1*4)/(4*4)$ + $(1*2)/(8*2)$ + $(1)/(16)$
$(4)/(16)$ + $(2)/(16)$ + $(1)/(16)$
$(7)/(16)$

$(7)/(16)$ is the fraction of the page that is used in total.

turn the denominators into the same number by multipling them
same to top as to bottom so
1/4 =4/16
1/8= 2/16
1/16 stays the same

add together to get 7/16

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