Systems with three variables. please help

Mathematics

1 answer:

kirza4 [7]3 years ago

3 0

X= 6
Y= 0
Z= -2

CHECK
3x + y -2z =22
3(6) + 0 -2(-2) =22
18 + 0 +4= 22
22=22

x+5y+z =4
6 +5(0)+ -2 =4
6 + 0 +-2 = 4
4=4

x+3z=0
6 + 3(-2) =0
6 -6 = 0
0=0

You might be interested in

Lorreen sells 18 adult tickets, 23 student tickets, and 10 discount tickets for the school play. Write the ratio student tickets

Alchen [17]

Answer:

23:18 23 to 18 23/18

Step-by-step explanation:

So really there is no step by step process. You just need to know the ways to write ratios!

Hope this helps!!

7 0

2 years ago

Gregory teaches martial arts. He charges a one−time processing fee of $5.00 and the cost of the classes is shown below. Let x re

yKpoI14uk [10]

According to the information given it appears that the first class is $15 and each additional class is $12. one class at $15 + 9 classes at $12 + $5 processing fee = $128

5 0

2 years ago

brett signed up for 2 tennis lessons each month from January through May. How many lessons did he sign up for in all

Vesnalui [34]

He signed up for 10 lessons

8 0

3 years ago

Read 2 more answers

. (06.02)

lora16 [44]

Answers:

1.) C - Final exams: midterm = Q3 92 - Q1 80 = 12 and finals = Q3 85 - Q1 78 = 7, so finals exam has the smaller IQR.

2.) B - exam median is much higher than the class median: refer to the attached image of class and exam box and whisker graph

3.) A - IQR is a better measure of spread for movies than it is for basketball games: because the data for movies are quite wide or apart from each other than the data in the basketball games

4.) A - mean for April is higher than October's mean: mean in April is 67 and mean in October is 60

5.) A - Neither data set has suspected outliers: meaning there's no data that is further apart from the group or set

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

7.) C - college spread is best described by the IQR. The high school spread is best described by the standard deviation: this is because of the wide range of data in the college than the data in the high school.

7 0

3 years ago

In the triangle below, find the measurements of the unknown angles. a 75 • A. 75 1059 B. 40°. 80° O c. 50, 10° O D. 25°, 50 O E

Deffense [45]

answer:

explanation:

hope it helps!

5 0

2 years ago