Answer:
r = 19.2deg
Step-by-step explanation:
6r + 5 = 30 + 90 (exterior angles of a triangle)
6r = 115
r = 19.2deg (1dp)
Topic: Angles
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Answer & Step-by-step explanation:
1.) Mathematical phrases:
a. numerical expression
b. algebraic expression
2. ) Write T for true or F for false
a. F
b. T
3. ) Number of terms is
c. 3
4.) a+0 is
a. a
5. ) 32+8÷4
a. 34
Answer:
The length of river D is 2550
length of river C is 2550+500=3050
Step-by-step explanation:
Let the river D be 'x'
and the river C is (x+500)
x + x + 500 = 5600
2x + 500 = 5600
2x = 5600 - 500
2x = 5100
x = 5100/2
x = 2550
The length of river D is 2550
length of river C is 2550+500=3050
