write an algebraic equation for the following and solve it. show all your steps
1. the sum of one-third of a number and 4 is 7. what is the number?
2. the sum of the square of a number and 7 is 32. what is the number?
3. thirty divided by seven times a number is 1. what is the number?

let the number be x for all the qns

1. x/3+4=7

x/3=3

x=9

2. x^2+7=32

x^2=25

x=5 or -5

3. 30÷7x=1

30=7x

x=30/7 or 4.29(3.s.f.)

answer: add the !

step-by-step explanation: then we will answer

see below

step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.