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Step2247 [10]
3 years ago
7

An easy question all wrong or unhelpful or no-work answers will be reported.

Mathematics
1 answer:
miss Akunina [59]3 years ago
6 0
Elimination:

7x - 3y = 20
5x + 3y = 16
(add)
12x = 36
÷ 12
x = 3

(5 × 3) + 3y = 16
15 + 3y = 16
- 15
3y = 1
÷ 3
y = 1/3

Substitution:

5x + 3y = 16
- 3y
5x = 16 - 3y
÷ 5
x = 3.2 - 0.6y

5(3.2 - 0.6y) + 3y = 16
16 - 3y + 3y = 16
16  = 16
- 16
6y = 0
÷ 6
y = 0

Sorry the substitution messed up for some reason, I'll fix it after I've answered the other question

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Nico owns 11 instructional piano books. Two are beginner books, six are intermediate books, and three are advanced books. If two
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The probability that he first chooses an advanced book and then chooses a beginner book is 6/121.

<h3>Probability</h3>

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7 0
2 years ago
Read 2 more answers
Please please pleaseee
kaheart [24]

Answer:

a. C= 5/9(F-32)

Step-by-step explanation:

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Three times the result of subtracting three from eight
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