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
marusya05 [52]
3 years ago
11

Pentru sala de mese a scolii s-au adus 12 scaune si 7 mese, plătindu-se 320lei.Știind că 4 scaune costă cât trei mese, află preț

ul unui scaun și prețul unei mese.
Mathematics
1 answer:
Wewaii [24]3 years ago
6 0

Răspuns:

Costul scaunului = 15

Costul mesei = 20

Explicație pas cu pas:

Dat fiind:

Să prețul scaunelor = c; pretul mesei = t

12c + 7t = 320 - - - (1)

4c = 3t; c = 3/4 t - - - (2)

Introducerea c = 3 / 4t în (1)

12 (3 / 4t) + 7t = 320

9t + 7t = 320

16t = 320

t = 320/16

t = 20

c = 3 / 4t

c = 3/4 (20)

c = 15

Costul scaunului = 15

Costul mesei = 20

You might be interested in
Which of the following values are in the range of the function graphed below?
Inessa [10]
The range of the function as seen from the graph is:

(-∞,-2] ∪ [2,∞)

So all the values that are in this range must be selected from the given options. Therefore, the correct answer is:

Option A: 2 
Option C: -4
Option E: -2
8 0
3 years ago
Read 2 more answers
Dillon earned $170 working 20 hours at the carwash what was his hourly rate of pay?​
MakcuM [25]

To find this answer, we must divide the amount Dillion earned, by the time he put into his work.

170 / 20 = 8.5

Therefor, we now know that Dillion makes $8.5 an hour.

3 0
3 years ago
CAN SOMEONE HELP ME PLEASE ASAP!?
Andrews [41]

Answer: 69

Step-by-step explanation:

The two angles are a linear pair, which means that they lie on the same line. Therefore, you just have to substract angle 1 with 180.

180-111=69

5 0
3 years ago
A person on a moving sidewalk travels 6 feet in 3 seconds. The moving sidewalk has a length of 80 feet. How long will it take to
tekilochka [14]

Answer:

40.5 seconds

Step-by-step explanation:

5 0
2 years ago
Miguel's family drinks 3 gallons of milk
Luden [163]
D because ugh I don’t feel like explaining
7 0
3 years ago
Other questions:
  • To go on the class trip, chang needs at least $125. he has saved $45, and he makes $7 an hour at his job. what is the minimum nu
    10·2 answers
  • The ratio of boys to girls in a class is 2:3 if there are 18 girls in the class how many boys are there
    14·1 answer
  • Nancy's percentile rank on a science test was 78. this means that
    8·1 answer
  • the hypotenuse and a side of a right angled triangle are 13cm and5cm respectively. fined the length of the third side​
    14·2 answers
  • Evaluate the expression when m= 6 and n= 64.
    15·1 answer
  • What sine function represents an amplitude of 1, a period of 2π, a horizontal shift of π, and a vertical shift of −4?
    9·1 answer
  • Answer and question are shown in picture
    12·1 answer
  • Julius went on a volunteer trip to Central
    14·1 answer
  • 7 13/20 as a percent??
    10·1 answer
  • Help ASAP
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!