Answer:
C. 10.99
Step-by-step explanation:
i took the test
Answer:
x + 100+ 3x = 180
4x + 100 = 180
4x = 180-100
<u>4</u><u>x</u><u> </u> = <u>8</u><u>0</u>
4. 4
x= 20°
Answer:
D. 54,900
Step-by-step explanation:
We have been given that the salary of teachers in a particular school district is normally distributed with a mean of $50,000 and a standard deviation of $2,500.
To solve our given problem, we need to find the sample score using z-score formula and normal distribution table.
First of all, we will find z-score corresponding to probability
using normal distribution table.
From normal distribution table, we get z-score corresponding is
.
Now, we will use z-score formula to find sample score as:
, where,
= Z-score,
= Sample score,
= Mean,
= Standard deviation





Therefore, the salary of $54900 divides the teachers into one group that gets a raise and one that doesn't.
√x = -6+9
√x = 3
x = 3²
x = 9
Answer:
Step-by-step explanation:
using the distributive property, the answer is -6.