3 years ago

Use substitution to solve the problem below algebraically. x = 41 x + 2y = 71

Mathematics

2 answers:

grandymaker [24]3 years ago

7 0

Answer:

41 + 2y = 71

2y = 30

y = 15

Step-by-step explanation:

i believe that is right, if not sorry

jonny [76]3 years ago

7 0

Step-by-step explanation:

41x+2y=71

2y=-41x+71

y=-20.5x+35.5

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Read 2 more answers

If tan A = 4/5; what does CSC A =?<br> Round to nearest tenth.

ZanzabumX [31]

Answer:

1.6

Step-by-step explanation:

$\tan \: A = \frac{4}{5} \\ \\ \cot \: A = \frac{1}{ \tan \: A } = \frac{1}{ \frac{4}{5} } = \frac{5}{4} \\ \\ csc\: A = \sqrt{1 + {cot}^{2}\: A} \\ = \sqrt{1 + { \bigg( \frac{5}{4} \bigg)}^{2} } \\ = \sqrt{1 + \frac{25}{16} } \\ = \sqrt{\frac{16 + 25}{16} } \\ = \sqrt{\frac{41}{16}} \\ = \frac{ \sqrt{41} }{4} \\ = \frac{6.40312424}{4} \\ = 1.60078106 \\ \therefore \: csc \: A =1.6$