The number of her correct answers is
(the total number of questions on the test) minus (20) .
Together they equal 90 degrees.
Equation:
(0.1x - 22) + (0.3x - 54) = 90
Open parenthesis and simplify:
0.4x -76 = 90
0.4x = 166
DIvide:
Your final answer is x= 415
Hope this helps!
Answer:
98
Step-by-step explanation:
the time taken is directly proportional and so we multiply 7 by 56 and the divide the answer by 4 to get 98
You would use metres because centimetres and inches are too small a measurement and kilometres are too long a measurement
