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V125BC [204]
3 years ago
5

What is the exact value of sin(-345°) in fraction form?

Mathematics
1 answer:
Damm [24]3 years ago
5 0
You draw the reference angle of 45° but clockwise. The exact value of sin(-345°) is 1/√2.
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The following map shows the time it takes to drive between four cities in Texas. Jacob has to drive from San Antonio to Houston,
sertanlavr [38]

Answer:

it is 7 5/12

Step-by-step explanation:

3 and 1/3 plus 4 and 1/12 and you need to multiply the denominator to get 12 ( witch is 4 ) then multiply the numerator by 4 and then you add the 2 numbers together to get 4/12 + 1/12 and then you need to add the whole numbers 3 + 4

witch gets you 7 and 5/12

3 0
2 years ago
Researchers investigated the possible beneficial effect on heart health of drinking black tea and whether adding milk to the tea
Elanso [62]

Answer:

(a)  It is an experiment.

(b) Group III has been tested to compare the effect of tea

Step-by-step explanation:

24 volunteers are randomly selected to one of the three groups.

Group I drinks two cups of hot black tea without milk

Group II drinks two cups of hot black tea with milk

Group III drinks two cups of hot water but no tea.

At the end of the month, the researchers measured the change in each of the participant's heart health.

The average change of health status of three Groups can be measured and let it be X1', X2' and X3'. We can set up the hypothesis of no difference of heart health i.e H0 : µ1 = µ2 = µ3 against the alternative hypothesis that they are not equal. As the sample size is less than 30, we can use t-statistic.

Under the above logic, (a) it is an experiment.

(b) Group III has been tested to compare the effect of tea or to have comparison between GroupI and Group III.

4 0
3 years ago
Find FG. The diagram is not to scale.
soldier1979 [14.2K]
FG = FE
3n - 4 = n + 8
2n = 12
  n = 6

FG = 3(6) - 4
FG = 18 - 4
FG = 14

answer
14
7 0
3 years ago
Read 2 more answers
How to do this question
Alenkinab [10]

Answer:

10 tacos costs $15.00

Step-by-step explanation:

I like to use ratio's to solve this  type of problem.  I will put cost over number of tacos.


$6.00       x dollars

--------   =  --------------

4 tacos     10 tacos

Using cross products

6 * 10 = 4 * x

60 = 4x

Divide each side by 4

60/4 = 4x/4

15 =x

10 tacos costs $15.00

6 0
3 years ago
Read 2 more answers
Rickey has fraction 7/8 of a cup of cereal in a bowl. He then gave two fraction 1/4 cups of cereal from his bowl to his little s
Zinaida [17]
5/8 would be the answer..

<span><span>7/8</span>-<span>1/4</span></span><span>=<span>(7 × 4) - (1 × 8)8 × 4</span></span><span>=<span>20/ 32</span></span><span>=<span>20 ÷ 432 ÷ 4</span></span><span>=<span>5/8<span>

</span></span></span>

4 0
3 years ago
Read 2 more answers
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