Answer:
Hello
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
ratio 5:6

6x = 5(30)
6x = 150
x = 25
Answer:
<h2>(55/27, 32/9)</h2>
Step-by-step explanation:
The system of equations is

The first step is to arrange like terms in colums, which is already done.
Then, we need to multiply a number by one equation in such way where we get opposite like terms. Notice that we need to multiply the first equation by -1

Then, we sum equations to obtain the value of one variable.

Now, we use this value to find the second variable

Therefore, the solution is (55/27, 32/9).
(The image attached shows the graphic solution)
Given the scores on a statewide standardized test are normally distributed
Mean = μ = 78
Standard deviation = σ = 3
Normalize the data using the z-score by using the following formula and chart:

Estimate the percentage of scores of the following cases:
(a) between 75 and 81
so, the z-score for the given numbers will be:

As shown, the percentage when (-1 < z < 1) = 68%
(b) above 87

The percentage when (z > 3) = 0.5%
(c) below 72

The percentage when (z < -2) = 0.5 + 2 = 2.5%
(d) between 75 and 84

The percentage when ( -1 < z < 2 ) = 68 + 13.5 = 81.5%
Answer:
1 is not a function because it is not a consistent pattern
Step-by-step explanation: