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3 years ago

I really don't get this im so confused

Mathematics

2 answers:

Tanzania [10]3 years ago

6 0

Answer:

Step-by-step explanation:

m<ABC=90 because of Angle inscribed in Semicircle Theorem

DiKsa [7]3 years ago

5 0

Answer:

90 degrees.

Step-by-step explanation:

m < ABC = 90 degrees (because it's the angle in a semicircle).

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Does the equation 2x+ 3y=-6, 4x+6y=-12 have infinetley many solutions

Vadim26 [7]

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Yes it has infinity of solutions.

Step-by-step explanation:

If you plug in certain numbers it will make the statements true.

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mark borrows $2,100 at an 8% simple intrest rate for 9 months. What is the amount he is being charged for borrowing the money

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2 years ago

A city hosted a music festival that included three concerts. According to the sales database, 28% of the audience attended the f

Vitek1552 [10]

Answer:

$P(X\cap Y\cap Z)=0.05$

Step-by-step explanation:

From the question we are told that:

Percentage of audience in first concert $P(X)=0.28$

Percentage of audience in second concert $P(Y)=0.42$

Percentage of audience in third concert $P(Z)=0.30$

Audience Percentage at at-least one concert $P(X \cup Y \cup Z)=0.80$

Percentage of audience at first & second concert $P(X \cap Y)=0.10$

Percentage of audience in first & third concert $P(X \cap Z)=0.08$

Percentage of audience in second & third concert $P(Y\cap Z)=0.07$

Generally the equation for probability of attending all concerts $P(X\cap Y\cap Z)$ is mathematically given by

$P(X \cup Y \cup Z)=P(X)+P(Y)+P(Z)-P(X \cap Y)-P(X \cap Z)-P(Y\cap Z)+P(X\cap Y\cap Z)$

$P(X\cap Y\cap Z)=P(X \cup Y \cup Z)-P(X)-P(Y)-P(Z)+P(X \cap Y)+P(X \cap Z)+P(Y\cap Z)$

$P(X\cap Y\cap Z)=0.80-0.28-0.42-0.30+0.10+0.80+0.70$

$P(X\cap Y\cap Z)=0.05$

Therefore the probability that a randomly selected audient attended all the concerts

$P(X\cap Y\cap Z)=0.05$

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3 years ago

(4x²+9x-7)+6(x²-10x+3)

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Answer:

1Step-by-step explanation:

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2 years ago