Answer: 30
Step-by-step explanation: Formula for Area of a triangle = 1/2 Base * Height. 12*5 = 60; 60/2 = 30.
Answer: About 12 of those 60 students are boys.
To find the percent, you'll convert 20% to a decimal.
20 / 100 = 0.2
Then, multiply 60 by 0.2
0.2 × 20 = 12
That's one way, another way is:
Convert 20% to a fraction.
20% = 1/5
Then multiply 60 by 1/5.
60 × 1/5 = 60/5
Lastly, divide 60 by 5
60 / 5 = 12.
Hence, 12 is the answer.
<em>Any questions? Comment down.</em>
Answer: Work done by both of them in k hours is
Explanation:
Since we have given that
Number of hours Mr. I does a job = x hours
Number of hours Mr. L does a job = y hours
Work done by Mr. I is given by
Work done by Mr. L is given by
Work done if they do together is given by
Work done if they work together for k hours is given by
Hence, work done by both of them in k hours is
You can reduce the first one by combining the ab and the ba term
Answer:
482 km
63.94 degrees
Step-by-step explanation:
to solve this question we will use the cosine rule. For starters, draw your diagram. From point A, up north is 500km and 060 from there, another 300. If you join the point from the road junction back to the starting point, yoou have a triangle.
Cosine rule states that
C =
where both A and B are the given distances, 500 and 300 respectively, C is the 3rd distance we're looking for and c is the given angle, 060
solving now, we have
C =
C =
C =
C =
C =
C = 482 km
The bearing can be gotten by using the Sine Rule.
=
sina/500 = sin60/482
482 sina = 500 sin60
sina =
sina = 0.8983
a = sin^-1(0.8983)
a = 63.94 degrees