So if 6 out of 40 are incorrect, 40-6= 36 must be correct.
In order to gain percentage you do proportions.
36/40 = x/100.
Multiply 36 times 100 then divide by 40, which is 90.
The answer is 90%.
90% of the questions he got were correct.
The value missed is 1 min / 60 seconds
<h3>What is unit conversion?</h3>
Units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors.
To convert 720 seconds to hour,
First convert second to minutes divide by 60 and then again convert minutes to hour again divide by 60.
So,
720 seconds * ( 1 minutes / 60 seconds) * ( 1 hour / 60 minutes)
= 12 hours.
Learn more about this concept here:
brainly.com/question/4736731
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30 because the angles of the triangle should be 180. Since we know one is 90 the other is 60 so 180-(90+60)=30
18 because it has equal so that means that you divide
Answer: The term 0.040(30h) represents the amount of tax she must pay.
Explanation:
The functin 0.04(30h) + 30h, has two terms; the second term, 30h, represents cost due to h hours at at unit of 30, and the first term 0.04(30h) is the additional amount due to the taxes over h hours at the unit rate of 30.
When you add a tax rate of 4% to 30h, you get the the amount of taxes over the 30h.
The calcualtion is: (4/100)×(30h) = 0.04(30h). Hence, you conclude that 0.04(30h) is the amount of tax she must pay.
