Answer:10+5=15 8+8= 16. 15+16=31
Step-by-step explanation:
31
Answer:
6) F
7) B
Step-by-step explanation:
6)
60= 2[½(n -6) +2n +5]
Expand:
60= 2(½)(n -6) +2(2n) +2(5)
60= n -6 +4n +10
Simplify:
60= 5n +4
Minus 4 on both sides:
5n= 60 -4
5n= 56
Divide both sides by 5:
n= 56 ÷5
n= 11.2
Thus, option F is correct.
7)
13q +2= 9(q +6)
Expand:
13q +2= 9q +54
Bring q terms to one side, constant to the other:
13q -9q= 54 -2
Simplify:
4q= 52
Divide both sides by 4:
q= 52 ÷4
q= 13
Thus, option B is correct.
The car travelled 87ft.
<u>Step-by-step explanation:</u>
A) Let the distance between his initial position and the building be 'a'
Height of the building = 150ft
Angle of depression= 42°
tan 42° = a/150
0.90 = a/150
0.90 x 150 = a
a = 135ft.
B) Let the distance between the building and the final position of Tony be 'b'
Height of the building = 150ft.
Angle of depression = 18°
tan 18° = b/150
0.32 = b/150
0.32 x 150 = b
b = 48ft
The distance the car travelled = a - b
= 135 - 48
= 87 ft.
The car travelled 87ft.
Answer:
1
Step-by-step explanation:
It's just 1