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
Murljashka [212]
2 years ago
12

Still having trouble

Mathematics
1 answer:
Paul [167]2 years ago
8 0
Given:
-2y + 5z = -3 <span>(first equation)
</span>y = -5x - 4z - 5  (second equation)
x = 4z + 4 <span>(third equation)<span>
</span></span>
Solution:
PART 1
Substitute x with (4z + 4) in the second equation
y = -5x - 4z - 5
y = -5(4z + 4) - 4z - 5

Then simplify
y = -20z - 20 - 4z - 5

add like terms
y = -20z - 4z - 20 - 5
y = -24z - 25

PART 2 : Find the value of z
We got y is equal to (-24z - 25). Substitute y with (-24z - 25) in the first equation, and we'll find the value of z.
-2y + 5z = -3
-2(-24z - 25) + 5z = -3
48z + 50 + 5z = -3

add like terms
48z + 5z = -3 - 50
53z = -53
    z = -53/53
    z = -1

The value of z is equal to -1

PART 3: Find y and x
Find the value of y by substitution of -1 in the place of z.
y = -24z - 25
y = -24(-1) - 25
y = 24 - 25
y = -1
The value of y is equal to -1

Find the value of x by substitution of -1 in the place of z.
x = 4z + 4
x = 4(-1) + 4
x = -4 + 4
x = 0
The value of x is equal to 0
You might be interested in
SOMEONE PLEASE HELP ME ASAP THIS IS ALMOST DUE ILL MARK BRAINLIEST!!!!
makkiz [27]

Answer:

153

Step-by-step explanation:

If the table adds up to 20 and opened toe counts for 45% of the total. then 45% of 340 is 153 !

3 0
2 years ago
30x+40 using the gcf
Lilit [14]
Use photomath it’s faster and you get correct Answers!<3 have a good dayy
4 0
2 years ago
What is the solution to the system of equations graphed below?
umka2103 [35]

Answer:

a

Step-by-step explanation:

the two lines intercept at 1,-2

6 0
2 years ago
Read 2 more answers
Solve log x - 2 = 3<br> A. 1<br> B. 100,000<br> C. 10,000<br> D. 10
ahrayia [7]

Answer: 100,000

Step-by-step explanation:

Given :

logx - 2 = 3

add 2 to both sides

log x = 5

Therefore :

x = 10^{5}

x = 100,000

4 0
2 years ago
4 is added to the data set 22, 25, 31, 33, 24. Answer true or false for the following statements.
Vedmedyk [2.9K]

Answer:

The range and mean will increase - False

(because only range will increase, mean will decrease)

The mean and median will decrease - True

The mean will decrease but the median will stay the same - False

(Both of mean and median will decrease)

An outlier is more likely to change the median than the mean - False

(An outlier is more likely to change the mean than the median)

3 0
3 years ago
Other questions:
  • What is fifty five hundredths plus twenty five hundredths
    7·2 answers
  • What is m∠5?<br> (please view attachment)
    6·2 answers
  • Which shows the algebraic representation of the phrase and it’s value when n=4.2 “twenty-eight plus the product of five and a nu
    12·2 answers
  • Enter your answer in the box. Be sure to enter your answer as an ordered pair (x,y). Meaning, put your answer in parenthesis.
    5·1 answer
  • A jar contains 550 beans. Of all the beans, 2/5 are white beans and the rest are navy beans. What is the ratio of white beans to
    12·1 answer
  • PLEASE HELP! (STATS) A box contains 10 batteries of which 6 are still working. Jada starts picking batteries one at a time witho
    7·1 answer
  • Create your own sentence or phrase that can be written algebraically
    9·1 answer
  • The sides of a right triangle form an arithmetic sequence with the difference d. Find the area of an inscribed circle in terms o
    8·1 answer
  • 이게워야? What is that? Tell me now!!!
    7·2 answers
  • Find the coordinates of centroid of a triangle whose vertices have coordinates (6,2);(- 3, 4); (3,- 9).
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!