What is 28+42+6,000,000,000
2 answers:
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Answer:
Speed of one dog is 2.5 m/s and other dog is 5.5 m/s.
Step-by-step explanation:
Total distance between the two dogs = 360 m
Let the speed of one dog be x m/s, then the speed of second dog will be x+3 m/s.
Then total speed of two dogs = x+x+3 = 2x+3
Times = 20 seconds
After 20 seconds, distance left between them = 200 m
Distance traveled by the two dogs in 20 seconds = 360 m - 200 m
= 160 m
We know, Speed =
2x+3 =
2x = 8-3 = 5
x = 2.5 m/s
Speed of first dog = 2.5 m/s
Speed of second dog = x+3 = 2.5 +3
= 5.5m/s
Speed of one dog is 2.5 m/s and other dog is 5.5 m/s.
y = 90°
Solution:
The reference image for the answer is attached below.
The sum of opposite interior angles is equal to the exterior angles.
m∠BAC + m∠ACB = 110°
m∠BAC + 70° = 110°
m∠BAC = 110° – 70°
m∠BAC = 40°
m∠BAD + m∠DAC = 40°
x + x = 40°
2x = 40°
Divide by 2 on both sides of the equation.
x = 20°
In triangle DAC,
Sum of all the angles of a triangle = 180°
m∠DAC + m∠ACD + m∠CDA = 180°
20° + 70° + m∠CDA = 180°
90° + m∠CDA = 180°
m∠CDA = 180° – 90°
m∠CDA = 90°
∠CDA and y lies on the straight line. So they form a linear pair.
y + m∠CDA = 180°
y + 90° = 180°
y = 180° – 90°
y = 90°
The value of y is 90°.
