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2 years ago

What is the equation for point (1,-2) PLEASE HELP MEEEE

Mathematics

1 answer:

Sladkaya [172]2 years ago

8 0

Common
Hi I have a question for y’all today I am just leaving work you have not heard from me you have to do a good

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The golden ratio is a solution to a quadratic equation.

Crank

Answer:

Below.

Step-by-step explanation:

a. Φ^2 − Φ − 1 = 0

Φ2 − Φ = 1

(Φ - 0.5)^2 - 0.25 = 1

(Φ - 0.5)^2 = 1.25

Φ - 0.5 = √(1.25) (We only take the positive root).

Φ = 0.5 + √(1.25)

b. I used Completing the square.

c. Φ is irrational That is it cannot be represented as a fraction a/b and because of this it can only be approximated by a decimal.

6 0

3 years ago

Assume that thermometer readings are normally distributed with a mean of degrees and a standard deviation of 1.00degrees C. A th

Andrew [12]

Answer:

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 0 degrees

Standard Deviation, σ = 1 degrees

We are given that the distribution of thermometer readings is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(Between 0.50 degrees and 1.75 degrees)

$P(0.50 \leq x \leq 1.75)\\\\ = P(\displaystyle\frac{0.50 - 0}{1} \leq z \leq \displaystyle\frac{1.75-0}{1})\\\\ = P(0.50 \leq z \leq 1.75)\\= P(z \leq 1.75) - P(z < 0.50)\\= 0.9599 - 0.6915 = 0.2684 = 26.84\%$

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

7 0

3 years ago

Subtract 7 2/9 - 1 5/6

fiasKO [112]

Answer:5 7/18

Step-by-step explanation:

7 2/9 - 1 5/6

65/9-1 5/6

65/9-11/6

97/18

5 7/18

5 0

2 years ago

Read 2 more answers

In which quadrant does the ordered pair (5, -6) lie?

guajiro [1.7K]

The coordinate (5,-6) lies in the fourth coordinate, because the first is x positive y positive, the second is x negative and y positive, the third is x negative and y negative, and the fourth is x positive y negative. This is x positive y negative, so it is in the fourth quadrant.

5 0

3 years ago

Read 2 more answers

Please help me with my homework!!!!

Zina [86]

Answer:

∠ACB= 57°

AB= 8.80 units (3 s.f.)

AC= 10.1 units (3 s.f.)

Step-by-step explanation:

Please see attached picture for full solution.

8 0

3 years ago