1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ss7ja [257]
3 years ago
6

Help and explain pls and thankyouu

Mathematics
1 answer:
defon3 years ago
5 0

Hello,

1)

\left\{\begin{array}{ccc}2x-y&=&7\\-2x+3y&=&9\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}2y&=&16\\-2x+3y&=&9\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}y&=&8\\-2x+3*8&=&9\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}x&=&7.5\\y&=&8\\\end{array} \right.\\\\

Answer C

2)

\left\{\begin{array}{ccc}x-2y-3z&=&5\\x+2y+3z&=&7\\x+z&=&3\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}2x&=&12\\x+2y+3z&=&7\\x+z&=&3\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}x&=&6\\2y+3z&=&1\\z&=&-3\\\end{array} \right.\\\\\\\\\left\{\begin{array}{ccc}x&=&6\\y&=&5\\z&=&-3\\\end{array} \right.\\\\\\

Answer C

You might be interested in
WILL UPVOTE
amm1812
X=6 you need to multiply by 2
7 0
3 years ago
I need help, do I have these pink dots in the right place?
irakobra [83]

Answer:

no, you actually don't.

Step-by-step explanation:

remember: x is how many to the left, and y is how many to the top.

reposition the dots and I will see if it is right the 2nd time.

hope this helped!

6 0
2 years ago
Read 2 more answers
If you apply the changes below to the absolute value parent function f(x)=lxl, what is the equation of the new function?
Snowcat [4.5K]

Answer:

f(x)=|x+4|+2

Step-by-step explanation:

The given absolute value function is

f(x)=|x|

This is the base or the parent function.

The transformation f(x)=|x+b|+c will shift the parent function b units to the left and c units up.

From the question, b=4 units and c=2 units.

The new equation is f(x)=|x+4|+2

7 0
3 years ago
Read 2 more answers
Could I get some help
lubasha [3.4K]
Can you take a better picture
5 0
2 years ago
Read 2 more answers
How would I solve and answer these two questions? I'm having a hard time understanding them.
postnew [5]

Answer:

The first one is either 88 feet or 90 feet

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • BRAINLIEST ASAP! PLEASE HELP ME :)
    11·1 answer
  • What is 15 3/5% as fraction in simplest form
    12·1 answer
  • After 10 years, the principal on this mortgage is $136,683. How much of the next payment will go towards interest ​
    10·1 answer
  • Learning task 1 jeffrey a car with a speed of 70 kph for 3 hours and 30 minutes how many kilometers did jeffrey drive
    14·2 answers
  • >
    6·2 answers
  • the same digits are used for the expression 2^5 and 5^2 explain how to compare the value of the expressions
    10·1 answer
  • 2 + 2 is ????????????????????
    11·1 answer
  • The contractor estimated the job would take about 12 weeks to
    15·1 answer
  • There are few differences in Florida plants as fall arrives. What differences might you see in the seeds of Florida plants?
    11·1 answer
  • Two sequences have the formulae 3n - 1 and 7n + 2. A new sequence is formed by the numbers which appear in both of these. Determ
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!