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
natali 33 [55]
3 years ago
14

50 POINTS!!!!

Mathematics
2 answers:
Taya2010 [7]3 years ago
8 0

Answer:

D) x = 4, y = -2, z = 3

Step-by-step explanation:

x = 3z − 5

2x + 2z = y + 16

2(3z - 5) + 2z = y + 16

6z - 10 + 2z = y + 16

8z = y + 26 ---> (A)

7x − 5z = 3y + 19

7(3z - 5) - 5z = 3y + 19

21z - 35 - 5z = 3y + 19

16z = 3y + 54 ---> (B)

8z = y + 26

16z = 3y + 54

2(y + 26) = 3y + 54

2y + 52 = 3y + 54

y = -2

8z = -2 + 26

8z = 24

z = 3

x = 3(3) - 5

x = 4

garri49 [273]3 years ago
4 0

Answer:

The answer is D

x = 4

y = -2

z = 3

Step-by-step explanation:

Plug in the values of x and z into the first equation, and see that D is the only choice that is correct.

You might be interested in
Luke started a weight-loss program. The first week, he lost X pounds. the second week he lost 3/2 pounds less then 3/2 times the
irga5000 [103]

Luke started a weight-loss program.

The first week, he lost X pounds.

the second week he lost 3/2 pounds less then 3/2 times the pounds he lost the first week. so, he lost 3/2 x - 3/2

The third week, he lost 1 more pound than 3/4 of the pounds he lost the first week. so, he lost 3/4 x + 1

So, over 3 weeks he lost :

x + (3/2 x - 3/2) + (3/4 x + 1) = 13/4 x - 1/2

=========================================================

Liam started the program when Luke did.

The first week, he lost 1 pound less than 3/2 times the pounds luke lost the first week. so, he lost (3/2 x - 1)

The second week, he lost 4 pounds less than 5/2 times the pounds luke lost the first week. so ,he lost (5/2 x - 4)

The third week, he lost 1/2 more than 5/4 times the pounds luke lost the first week. so, he lost, ( 5/4 x + 1/2)

The expression for Liam's weight loss over the three weeks is =

= (3/2 x - 1) + (5/2 x - 4) + ( 5/4 x + 1/2) = 21/4 x - 9/2

=============================================================

Assuming they both lost the same number of pounds over the three weeks

So, equating the number of pounds lost by each one of them

so,

13/4 x - 1/2 = 21/4 x - 9/2

solve for x

13/4 x - 21/4 x = -9/2 + 1/2

-2x = -4

divide both sides by -2

so,

x = -4/-2 = 2

so,

The number of pounds luke lost in the fist week is 2 pounds

=============================================================

4. The number of pounds luke and liam each lost over the three weeks is

= 13/4 * 2 - 1/2 = 6 pounds

7 0
1 year ago
11=12-q <br><br> Step by step in numbers
Lina20 [59]

Answer:

q = 1

Step-by-step explanation:

11=12-q\\\\12-q=11\\\\12-12-q=11-12\\\\-q=-1\\\\\frac{-q=-1}{-1}\\\\\boxed{q=1}

Hope this helps.

3 0
3 years ago
* PLEASE HELP *<br> -State what the answer is, then please inform me on how to do it. ~Thank you :)
Orlov [11]
The answer is that my dad paints twice as fast as I do I paint 3/4 in 30 min. but my dad does it in 15 min. so he paints 2 time quicker then i do 
7 0
3 years ago
Read 2 more answers
Can somebody help me What is 4(x-1)=6
avanturin [10]
4(x-1)=6 you start by dividing the whole equation by 4, so
x-1=6/4 simplify, x-1=3/2 then you add 1 to the whole equation
x=1 and 3/2 or x=5/2
7 0
3 years ago
Simplify 7b + 4 + b + 3
adelina 88 [10]

Answer:

8b + 7

Step-by-step explanation:

Add like terms.

7b + b (same as 1b) = 8b

4 + 3 = 7

8 0
3 years ago
Read 2 more answers
Other questions:
  • Kelly has 114 hours to complete 3 chores before leaving for soccer practice. If she spends an equal amount of time on each chore
    15·2 answers
  • HURRY PLEASE! 20 pts
    8·1 answer
  • HELLPPPPPPPPPPPPPPPPPPP
    11·1 answer
  • A rectangle as the width of 9 units and length of 40 units. What is the length of the diagonal?
    8·1 answer
  • Simplify 1.7 (-5) (-3. 27)
    11·1 answer
  • A new basketball costs $25.00 the store is going out of business and everything is 60% off
    10·2 answers
  • Find the roots.<br><br> 2x^2 + 4x - 5 =0
    13·1 answer
  • A type of fish for your aquarium costs $9 each. You can spend at most $45. How many
    8·1 answer
  • What percent of 90 is 36?<br> 40%<br> 32.4% <br> 250%
    15·2 answers
  • PLEASE ANSWER QUICKLY! WILL GIVE BRAINIEST! ONE QUESTION! ANSWER CORRECTLY TYSM! &lt;333
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!