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4 years ago

Help please! I appreciate all of you people helping me:))

Mathematics

1 answer:

Likurg_2 [28]4 years ago

8 0

Answer:

∠ b = 12°

Step-by-step explanation:

Complementary angles sum to 90°, thus

a + b = 90 ← substitute a = 78

78 + b = 90 ( subtract 78 from both sides )

b = 12

That is ∠ b = 12°

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4 years ago

Read 2 more answers

In the town of Maplewood a certain type of DVD player is sold at just two stores, 43% of the sales 13) are from store A and 57%

umka21 [38]

Answer:

Option A 0.312 is right

Step-by-step explanation:

Given that iN Maplewood a certain type of DVD player is sold at just two stores, 43% of the sales 13) are from store A and 57% of the sales are from store B. 2.4% of the DVD players sold at store A are defective while 4.0% of the DVD players sold at store B are defective.

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If Kate receives one of these DVD players as a gift and finds that it is defective, what is the probability that it came from store A

= $\frac{0.01032}{0.03312} \\=0.312$

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3 years ago