Answer:
Multiply 5(x+4) to get rid of the parenthesis.
Step-by-step explanation:
5x+20=3x-5
- Total timeof Ndiba =1+3=4hours
Let
- Ndibas speed be x
- Willies speed=x+10
Both travelled same distance
Respuestas :
A) 100km/h
B) 49km/h
C) 2.8 km/h
D) 500 m/s
Answer:
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Step-by-step explanation:
Cos( 30 ) = 19√3 / x
√3 / 2 = 19√3 / x
Simplify √3 from both sides
1 / 2 = 19 / x
Multiply both sides by x
1 /2 × x = 19 / x × x
x / 2 = 19
Multiply both sides by 2
x / 2 × 2 = 19 × 2
x = 38
_____________________________
Sin( 30 ) = y / x
1 / 2 = y / 38
Multiply both sides by 38
38 × 1 / 2 = 38 × y / 38
38 / 2 = y
19 = y
y = 19
