Will took two tests and made an 83% and a 93%. What will he need to make on the next test to have a mean score of 90%
2 answers:
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Answer:
x = 54.6 m
Step-by-step explanation:
Δ MAB and Δ MNP are similar, then corresponding sides are in proportion, that is
=
, substitute values
=
=
( cross- multiply )
80.5x = 4395.3 ( divide both sides by 80.5 )
x = 54.6
9514 1404 393
Answer:
Step-by-step explanation:
The slope of a line is the same everywhere, so an equation can be written making use of that fact.
Cross-multiplying gives ...
2(y -5) = x -2
2y -10 = x -2 . . . eliminate parentheses
2y = x +8 . . . . . . . add 10; next, divide by 2
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These equations match choices B and D.