Answer:
a, b, d, 4x=5y+5
Step-by-step explanation:
Plug in x and y values to equations.
a: 5-3=2 - correct
b: 3-5=-2 - correct
c: 2(5) + 3(3)= -7 - incorrect
d: 5+3=8 - correct
e?: 4(5) = 5(3)+5 - correct
f?: 5-15= -3 - incorrect
g?: 5+3=23 - incorrect
h?- 3(5) + 3(3) = 9
hope this helped!
Answer:
Read below ( Equal Square roots and non equal square roots)
Step-by-step explanation:
Finding square roots of of numbers that aren't perfect squares without a calculator.
Example: Calculate the square root of 10 ( ) to 2 decimal places.
Find the two perfect square numbers it lies between.
Divide 10 by 3. ...
Average 3.33 and 3. ( ...
Repeat step 2: 10/3.1667 = 3.1579.
A square root of a number is a value that, when multiplied by itself, gives the number. Example: 4 × 4 = 16, so a square root of 16 is 4. ... The symbol is √ which always means the positive square root.
If you still need help, I recommend you search this up.
Understanding square roots (video)
<h2>Good Luck</h2>
5y - 100x = 25
5y = 100x + 25
y = 20x + 5
Therefore, the slope is 20 and the y-intercept is 5.
Answer:
use the distance Formula D=sqrt of {(x1-x2)^2+(y1-y2)^2}
Step-by-step explanation:
So(-5--9)^2 + (-5- -2)^2 =
(4)^2 + (-3)^2 =
16 + 9 = 25
and the square root of 25 is 5.
5 is the answer
The formula for a z-score is
We don't have μ, the mean, or σ, the standard deviation. We can, however, set up a system of two equations with the information we do have. We know:
We can make this look more like a "typical" system of equations by cancelling the fractional part of each equation. We do this by multiplying the bottom of each equation by σ:
Now we'll get the variables on the same side of the equation. We'll do this by adding μ to both sides:
Now we'll write this vertically:
We will "eliminate" μ by subtracting the bottom equation:
Divide both sides by -5:
Our standard deviation is 5. Substituting this into our top equation we have:
-3(5)+μ=60
-15+μ=60
Cancel the -15 by adding it to both sides:
-15+μ+15=60+15
μ=75
Our mean is 75.