Answer:
67.5°, 107.5°
Step-by-step explanation:
For supplementary angles, their sum equals 180°.
Let x be the first angle and y be the second angle, then
x + y = 180°.
It is given that x = y + 45°.
So x + y = 180°
substituting x into the equation, we have
y + 45° + y = 180°
simplifying, we have
2y + 45° = 180°
collecting like terms, we have
2y = 180° - 45°
2y = 135°
dividing through by 2, we have
y = 135°/2
y = 67.5°
Since y = 67.5°
then x = y + 45°
x = 67.5° + 45°
x = 107.5°
Answer:
10 %
Step-by-step explanation:
We first find change in the quantities
Then we write the change in quantity on original quantity and multiply by 100%
This implies that,
Therefore the percentage increase is 10%
Step-by-step explanation:
Multiply the first equation by 7 and the second by 2
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➷ Work out the time for Cardiff to Swansea:
time = distance/speed
Substitute in the values:
time = 69/60
Solve:
time = 1.15 hours = 69 minutes
Add together the total time and distance:
72 + 69 = 141
48 + 69 = 117
speed = distance/time
speed = 141/1.95
speed = 72.3 km/h
➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
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Answer:
There are 4 quarts in a gallon
Step-by-step explanation:
