Y=9x+7,y=3x-11 i need to solve theeqayions by substition and show the work
1 answer:
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Answer:
Step-by-step explanation:
They both (18 and 42) go into 6.
Divide 18 and 42 by 6 and you get
Answer:
D
Step-by-step explanation:
Using trigonometric ratios in the right triangle
tan45° = 1 and cos45° =
tan45° = =
Multiply both sides by 7
7 × tan45° = b, that is
b = 7 × 1 = 7
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cos45° = =
Multiply both sides by a
a × cos45° = 7, that is
a × = 7
Multiply both sides by
a = 7