Answer:
just be yourself, and talk to her.
Step-by-step explanation:
<h2>
Answer:</h2>
<u>Area of semi circle = πr²/2</u>
Area = 22 × 2 × 2/7 × 2
Area = 44/7ft².
Answer:
Class A :
Class B :
Step-by-step explanation:
Class A :
Let the amount of Salt in the solution be represented by y as, it is supposed to be the independent variable.
Similarly let the amount of Water in the solution be x
As we are given that for Class A , The ratio of salt content to water content is 3 to 5
Hence
Multiplying both sides by x we get
Class B :
Let the amount of Salt in the solution be represented by y as, it is supposed to be the independent variable.
Similarly let the amount of Water in the solution be x
As we are given that for Class A , The ratio of salt content to water content is 2 to 4
Hence
multiplying both sides by x we get
Answer: 2nd and 3rd statement
Step-by-step explanation:
From the diagram, the 1st statement is wrong, the 2nd statement is correct
To know which of the rest of the statement is correct we have to find the value of MN
So we use the cosine rule to find the angle inside the triangle at point L
c2 = a2+b2-2abcosC
For our triangle
c= 12.8
b= 5.9+5.9=11.8
a= 3.7+3.7=7.4
C = ?
(12.8)2 = (7.4)2 + (11.8)2 - 2x11.8x7.4cosC
163.84 = 54.76+739.24 - 174.64cosC
163.84 = 194 - 174.64cosC
163.84-194 = -174.64cosC
-30.16 = -174.64cosC
-30.16/-174.64 =cosC
cosC = 0.1727
cos-1(0.1727) = 80.06
C = 80.06 degrees
So we use this value to find length MN with also cosine rule from the triangle NML
c2 = a2+b2-2abcosC
c = ?
a = 5.9
b = 3.7
C = 80.06
c2 = (5.9)2 + (3.7)2 - 2x5.9x3.7cosC
c2 = 34.81 + 13.69 - 43.66x0.1727
c2 = 48.5 - 7.54
c2 = 40.96
c = root(40.96)
c = 6.4
Which is half of KJ
So therefore, the third statement is correct
Answer:
Step-by-step explanation:
Woke up = 7:30 AM
<u>Time to:</u>
- Get ready = 14 min
- Finish breakfast = 9 min
- Commute to school = 39 min
<u>Altogether:</u>
= 14 + 9 + 39 min
<h3>= 62 minutes </h3>
(As we know that, 1 hour = 60 minutes)
So,
<h3>62 minutes = 1 hour 2 minutes</h3>
<u>Time he reached the school:</u>
7 hr 30 min + 1 hr 2 min
Combine like terms
7 hr + 1 hr + 30 min + 2 min
<h3>8 hr + 32 min</h3>
OR
<h3>8:32 AM</h3>