Answer:
16.67
Step-by-step explanation:
3/7=0.42 and 21/3=7 and 7/0.42=16.67
If she wants an average of 73 for 3 tests,
she needs a total of 73 x 3 = 219
Total of the first 2 tests = 77 + 75 = 152
Scores needed for her 3rd test = 219 - 152 = 67.
Answer: She needs a score of 67 marks.
Answer: Choice A) 3x+4y = 12
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y = (-3/4)x + 3
4*y = 4*((-3/4)x+3) ... multiply both sides by 4 to clear out the fraction
4y = -3x+12 ... distribute and multiply
4y+3x = -3x+12+3x ... add 3x to both sides
3x+4y = 12
Note: this is in standard form Ax+By = C where A = 3, B = 4 and C = 12.
Answer:
0.674 as a percent. 0.674 is equivalent to 67.4%.
Hope this helps!
