What is the system of equations by graphing

Mathematics

1 answer:

frez [133]3 years ago

6 0

Answer:

(x, y) = (0, 4)

Step-by-step explanation:

The two lines intersect at their y-intercept: (x, y) = (0, 4).

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Identify the pairs of angles. Describe the measures of the angles in each pair

Anni [7]

Right angle, acute, obtuse

8 0

2 years ago

What is the factor form of n^-25 (n—25)(n-1) (n-5)(n+5) (n+5)(n+5) (n-25)(n+1)

Anon25 [30]

To solve this problem you must apply the proccedure shown below:
1- You have the following quadratic expression n^2-25.
2. When you factor, you obtain:
(n-5)(n+5)
3. To verify this is true, you can apply the distributive property, as below:
n^2+5n-5n-25
n^2+25
Therefore, as you can see, the answer is the second option, which is:
(n-5)(n+5)

6 0

2 years ago

The demand for a daily newspaper at a newsstand at a busy intersection is known to be normally distributed with a mean of 150 an

AURORKA [14]

Answer:

171 newspapers.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 150, \sigma = 25$