-4(3m-3)+(-10+8m)
12m+12-1+8m
12m+8m = 20m
+12 -1= +11
answer: 20m+11
*note negative times a negative equals positive and negative times positive is negative
first: you multiply -4 by 3m which is -12m.
second: you multiply -4 by -3 which is +12
third: find the invisible which is 1. (located right here: +(1) (-10+8m)
fourth: multiply invisible 1 by -10 which is -10
fifth: multiply invisible one by +8m which is +8m
sixth: combine like terms
seventh: answer
The answer is 33 because you would subtract 3 from 63 and then divide 60 by 2 which is 30. Since Mr. Smith is 3 years older then u would add 30 and 3.
Answer: 0.345
Step-by-step explanation:
Given : The incomes of families in Newport Harbor are normally distributed with Mean : and Standard deviation :
Samples size : n=4
Let x be the random variable that represents the incomes of families in Newport Harbor.
The z-statistic :-
For x= $800,000
By using the standard normal distribution table , we have
The probability that the average income of these 4 families exceeds $800,000 :-
Hence, the probability that the average income of these 4 families exceeds $800,000 =0.345
$6-3x<12\quad:\quad\begin{bmatrix}\mathrm{Solution:}\:&\:x>-2\:\\ \:\mathrm{Interval\:Notation:}&\:\left(-2,\:\infty\:\right)\end{bmatrix}$6−3x<12 : [ Solution: x>−2 Interval Notation: (−2, ∞ ) ]
Steps
$6-3x<12$6−3x<12
$\mathrm{Subtract\:}6\mathrm{\:from\:both\:sides}$Subtract 6 from both sides
$6-3x-6<12-6$6−3x−6<12−6
$\mathrm{Simplify}$Simplify
$-3x<6$−3x<6
$\mathrm{Multiply\:both\:sides\:by\:-1\:\left(reverse\:the\:inequality\right)}$Multiply both sides by −1 (reverse the inequality)
$\left(-3x\right)\left(-1\right)>6\left(-1\right)$(−3x)(−1)>6(−1)
$\mathrm{Simplify}$Simplify
$3x>-6$3x>−6
$\mathrm{Divide\:both\:sides\:by\:}3$Divide both sides by 3