Answer:
the only thing i know that n=-30
Answer:
11
Step-by-step explanation:
-15, -15, 7, 8, 11, 16, 17, 18, 18
find the middle number after numbers are in order
hope this helps :)
Answer:
the equation would be
8.4x = 23.94
Step-by-step explanation:
Let the price of each gallon of gas is $x.
And we have been given that 8.4 gallons of gas for $23.94.
So, we can make the below proportion
Cross multiplying, we get
Hence, the equation that can be used to determine the price of each gallon of gas is
pls mark as brainliest
Answer:
The homework grade, to the nearest integer, for a student with a test grade of 68 is 69.
Step-by-step explanation:
The general form of the linear regression equation is:
Here,
<em>y</em> = dependent variable = test grade
<em>x</em> = independent variable = homework grade
<em>a</em> = intercept
<em>b</em> = slope
Compute the value of <em>a</em> and <em>b</em> as follows:
The linear regression equation that represents the set of data is:
Compute the value of <em>x</em> for <em>y</em> = 68 as follows:
Thus, the homework grade, to the nearest integer, for a student with a test grade of 68 is 69.
Answer:
81
Step-by-step explanation:
Let the digits that make up the number be a and b.
Given that the square root of the number is equal to the sum of the digits.
Then,
√(10a + b) = a + b
Also given that the square root of the number is less than the number obtained by interchanging the digits by 9, then
√(10a +b) + 9 = 10b + a
Since √(10a + b) = a + b, then
a + b + 9 = 10b + a
a - a + 9 = 10b - b
9b = 9
b = 1
since √(10a + b) = a + b
√(10a + 1) = a + 1
10a + 1= (a + 1)²
10a + 1 = a² + 2a + 1
a² + 2a - 10a + 1 - 1 = 0
a² - 8a = 0
a(a - 8) = 0
a = 0 or a = 8
Using a = 8 and b = 1,
the number 10a + b = 10(8) + 1 = 81.
