Answer:
Step-by-step explanation:
We can substitute the given values of 
, 
, and 
to find the value of this expression.
We know that <em>two negatives make a positive. </em>This means that 
will be the same this as 
Adding a negative is the same as subtracting a positive.
Hope this helped!
(2x + 10)(x - 9)
2x(x - 9) + 10(x - 9)
2x(x) - 2x(9) + 10(x) - 10(9)
2x² - 18x + 10x - 90
2x² - 8x - 90
Answer: 
Step-by-step explanation:
a = base
h = height
Solve the parentheses squared first.
2 and 36 can be simplied
2/2=1
36/2=18
Rounded to the nearest whole number...
Answer:
negative
Step-by-step explanation:
calculating the z score by subtracting the mean and dividing by the standard deviation
(55-70)/10= -1.5
It's negative
Cross-multiply so that 8(3x + 1) = 14(2x)
Distribute the 8 and 14 into the parentheses:
24x + 8 = 28x
Subtract 24x from both sides:
8 = 4x
Divide both sides by 4:
x = 2
