What is the solution to the equation 9^-3x = 7? (1 point)

Please help and explain

bagirrra123 [75]

Answer:

See below

Step-by-step explanation:

The three angles inside of the triangle sum to 180

11x + 4 + 3x + 78 = 180

14x +82 =180

x = 7

then B = 11x + 4 = 11(7) + 4 = 81 degrees

C = 3x = 21 degrees

5 0

2 years ago

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What’s the total badges and buy all the Boy Scouts 26 25 52 78

amid [387]

78 . Hope this was helpful

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3 years ago

Ratio in lowest terms 45 girls and 30 boys

drek231 [11]

3:2 is ur answer to this question

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3 years ago

All the fourth-graders in a certain elementary school took a standardized test. A total of 85% of the students were found to be

Aneli [31]

Answer:

There is a 2% probability that the student is proficient in neither reading nor mathematics.

Step-by-step explanation:

We solve this problem building the Venn's diagram of these probabilities.

I am going to say that:

A is the probability that a student is proficient in reading

B is the probability that a student is proficient in mathematics.

C is the probability that a student is proficient in neither reading nor mathematics.

We have that:

$A = a + (A \cap B)$

In which a is the probability that a student is proficient in reading but not mathematics and $A \cap B$ is the probability that a student is proficient in both reading and mathematics.

By the same logic, we have that:

$B = b + (A \cap B)$

Either a student in proficient in at least one of reading or mathematics, or a student is proficient in neither of those. The sum of the probabilities of these events is decimal 1. So

$(A \cup B) + C = 1$