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3 years ago

Need urgent help please

Mathematics

1 answer:

Llana [10]3 years ago

7 0

A triangle's angles always add up to 180 degrees. Using this information, add 88.4 and 57.1 to get 145.5. After that you subtract 145.5 from 180 to get 34.5 degrees which is the value of x. An equation for this problem is this: 145.5 + 34.5 = 180.

You might be interested in

The graph of the quadratic function f(x) is shown below. What is one of the solutions of the equation?

Vaselesa [24]

Answer:

x = -2

x = 4

Step-by-step explanation:

The solutions of the quadratic function that is represented by the graph shown above, is the x-intercepts of the graph.

The x-intercepts are the values of x, when y = 0. At any of these x-values, the parabola intercepts the x-axis.

Therefore, the graph shows that the parabola intercepts the x-axis when x = -2 and also when x = 4.

The solutions of the equation of the graph are x = -2, and x = 4.

8 0

3 years ago

Need help homework due tomorrow! is it correct and need help on 9

Lera25 [3.4K]

Answer:

B. -1

Step-by-step explanation:

I just looked over it quickly, everything looks correct.

To see if a number is in the solution set, plug it in and see if its true:

0 - 9 > -10

-9 > -10

true

-1 - 9 > -10

-10 > -10

false

1 - 9 > -10

-8 > -10

true

2 - 9 > -10

-7 > -10

true

The only solution that doesn't work is B. -1

3 0

3 years ago

9) Find the average rate of change for the function modeled by the graph 5 points

ale4655 [162]

Answer:

Step-by-step explanation:

6 0

3 years ago

The playing time X of classical CDs has the normal distribution with mean 54 and standard

pickupchik [31]

Using the normal distribution, it is found that the relative frequency of classical CDs with playing time X between 49 and 69 minutes is 0.8403 = 84.03%.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

$Z = \frac{X - \mu}{\sigma}$

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

$\mu = 54, \sigma = 5$

The relative frequency of classical CDs with playing time X between 49 and 69 minutes is the <u>p-value of Z when X = 69 subtracted by the p-value of Z when X = 49</u>, hence:

X = 69:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{69 - 54}{5}$

Z = 3

Z = 3 has a p-value of 0.9987.

X = 49:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{49 - 54}{5}$

Z = -1

Z = -1 has a p-value of 0.1584.

0.9987 - 0.1584 = 0.8403.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

7 0

2 years ago

Plz someone help me I just guessed but what's the real answer, I need this asap

sladkih [1.3K]

Answer: Honestly it has to be B dont see how the others come into play

Step-by-step explanation:

6 0

3 years ago