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
azamat
2 years ago
15

3x+8-X=57-4 Is 7 a solution to the question

Mathematics
2 answers:
Diano4ka-milaya [45]2 years ago
8 0

Answer:

7 is not a solution for x.

Step-by-step explanation:

To see if 7 is a solution for x, we will simply plug in the value for x and see if the left hand side is equal to the right hand side.

3x + 8 - x = 57 - 4

3(7) + 8 - (7) ?= 57 - 4

21 + 8 - 7 ?= 53

29 - 7 ?= 53

22 ?= 53  (( NO ))

Since 22 does not equal 53, 7 is not a solution for x.

Let's find the solution for x:

3x + 8 - x = 57 - 4

2x + 8 = 53

2x = 45

x = 22.5

Let's validate this solution for x:

3x + 8 - (x) = 57 - 4

3(22.5) + 8 - (22.5) ?= 57 - 4

67.5 + 8 - 22.5 ?= 53

45 + 8 ?= 53

53 == 53  (( YES ))

Since 53 is indeed equal to 53, then 22.5 is a solution for x.

Cheers.

ycow [4]2 years ago
5 0

Answer:

No, 7 is not a solution. x=11.25

Step-by-step explanation:

To find whether 7 is a solution, we can plug it in as x.

3(7)+8-7=57-4

21+15=53

36=53

No, 7 is not a solution.

We can find the solution by solving out the equation normally

3x+8+x=57-4

2x+8=53

2x=45

x=22.25

You might be interested in
Joshua uses the escalator in the shopping mall to get to the ground floor from the underground garage located at (12,-5). Which
alina1380 [7]

Answer:

(4,5)

Step-by-step explanation:

Initial location of Joshua in the shopping mall is expressed according to the coordinate (12, -5)

If he undergoes a translation of 8 steps to the left and 10 steps upwards, this means that he moves 8 steps towards the negative x axis and 10 steps towards the positive y axis. The new coordinate will be gotten by adding the translation (-8, 10) to the initial coordinate as shown

New position = (12, -5) + (-8,10)

New position = (12-8, -5+10)

New position = (4, 5)

Hence the coordinates that corresponds to the location of the ground floor when undergoing a translation of 8 steps to the left and 10 steps upwards will be (4,5)

7 0
3 years ago
39.2 is what percent p of 112
madam [21]
39.2 is what percent p of 112

39.2/112

39.2 ÷ 112 = 0.35

Convert to percent:-

0.35 × 100 = 35
35%

3.92 is 35% of 112.
3 0
3 years ago
If f(x) = 2x2 + 7, find f(-3) =<br> What’s the f(-3)
Allisa [31]

Answer:

replace the x with -3

Step-by-step explanation:

if you ever have f(x) = 'insert equation' and then it says find f('insert number'), you replace what ever variable is after the first 'f' with the number after the second 'f'. hope this helped!

5 0
3 years ago
Read 2 more answers
PLEASE HELP BIG FINALS TEST!!
GrogVix [38]

Answer:

F=25

Step-by-step explanation:

10x+15=30x-5

15=20x-5

20=20x

1=x

30(1)-5

30-5

25

5 0
2 years ago
Read 2 more answers
Please help me with this question. Hope to get answers asap!
avanturin [10]

Answer: Approximately 7.4162

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • -7 times -8? -40 divided by 10?
    15·1 answer
  • The sum of<br> sum of two numbers is 39 and their difference is 5. What is the larger number?
    6·2 answers
  • A sedan will drive ten miles north, 15 miles east, 13 miles south, 15 miles west, and 22 miles north. The sedan gets 20 miles pe
    14·1 answer
  • I need help with this question!
    10·1 answer
  • How many kilograms are in 76.2 grams? Use the metric table to help answer the question. Metric Table kilo- hecto- deka- unit dec
    15·2 answers
  • What is another name for the point located at (0 0)?
    12·1 answer
  • What is total number of elements in 3 trials of rolling a 6-sided die?
    8·1 answer
  • :).....................;(
    9·2 answers
  • June was thinking of a number. June doubles it, then adds 18 to get an answer of 90.7. What was the original number?
    15·1 answer
  • Does anyone know this answer??
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!