Is there any notes to help solve this
Answer:
B
Step-by-step explanation:
because the numbers 0-9 consist of 10 numbers,
having a 70% chance of success means that out of the 10 numbers, 7 are correct.
thus, choice B is correct as it have 7 numbers in it
(rmb to count "0" as a number!)
In order to round off to the nearest hundred we have to check the place value on immediate right of the hundred place value. The digit on the right of the hundred is the tens digit. 47 can be written as 047.
The digit on the tens place is 4. So we have to round based on the value of 4.
The rule is if the number on right is 5 or greater than 5, the next digit would be rounded of the next higher digit and the digits on right will be replaced by zeros. If the number is less than 5, the digit will not be changed and all the digits on the right will be replaced by zeros.
In 047, 4 is less than 5. So the first 0 will not change, and the digits on right i.e. 4 and 7 will be replaced by zeros.
So 47 rounded off to the nearest hundred will be 000.
Answer:
C) 12.5
The length of BC = 12.5cm
Step-by-step explanation:
<u><em>Step(i):-</em></u>
<em>Given that ΔABC</em>
<em>Given that AB = 15cm and ∠A = 40°</em>
<em>we will use trigonometric function</em>
<em> </em><em></em>
<em> </em><em></em>
<u><em>Step(ii):-</em></u>
we know that tan40° = 0.83909
BC = 15 × tan 40°
BC = 12.58649
BC = 12.5cm
<u><em>Final answer:-</em></u>
The length of BC = 12.5cm
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