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
aev [14]
2 years ago
15

Find the value of x.

Mathematics
1 answer:
Slav-nsk [51]2 years ago
5 0
Answer: X = 3.174285

Explanation:

Given: 7x + 21, 47

7x + 21 = 47

7x = 47 - 21

7x = 26

X = 26/7 or 3.174285
You might be interested in
Book store has 6 shelves of books about animals. There 30 books on each shelf. Distributive property diagram
Veronika [31]
180 books because there's 6 shelves with 30 books on each shelf. 6×30=180 I believe that is the answer we are looking for.
4 0
3 years ago
Chiara has 26 coins that equal 34 cents. All the coins are pennies, p, and nickels, n. How many nickels and pennies does Chiara
wlad13 [49]

Answer:

Chiara has 2 penny coins and 24 nickel coins

Step-by-step explanation:

Let

p ----> the number of penny coins

n ---> the number of nickel coins

Remember that

1\ penny=\$0.01

1\ nickel=\$0.05

Chiara has 26 coins that equal 34 cents

so

p+n=26

isolate the variable x

p=26-n ----> equation A

34 cents=$0.34

0.01p+0.05n=0.34

Multiply by 100 both sides

p+5n=34

isolate the variable x

p=34-5n -----> equation B

Create a table  to guess

assume  different values of n and determine the value of p in equation A and equation B

The solution is when the value of p in the equation A must be equal to the value of p in equation B

1) For n=1

equation A

p=26-1=25

equation B

p=34-5(1)=29

29\neq 25

2) For n=2

equation A

p=26-2=24

equation B

p=34-5(2)=24\\24=24

therefore

The solution is (2,24)

Chiara has 2 penny coins and 24 nickel coins

3 0
3 years ago
Read 2 more answers
5. In a right triangle, the sum of the lengths of the two legs is 100 meters. What are the lengths of the three sides
LiRa [457]

Answer:

6m by 8m by 10m

Step-by-step explanation:

6²+8²= 100

36+64=100

100=100

5 0
3 years ago
Look at the picture please also be quick bec
Minchanka [31]
Unfortunately there is no picture, im sorry
7 0
2 years ago
How much table top space do they have between the 2 tables
Delicious77 [7]

Answer:

Standard Seating: 42” between tables. This lets you seat two people back to back and leaves 6” between them.

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • For a trapezoid, the following formula relates the area A, the two bases a and b, and the height h.
    8·2 answers
  • Determine whether the figure shown below is a convex polygon a concave polygon or not a polygon
    10·2 answers
  • ∠A and ∠B are vertical angles with m∠A = x and m∠B = 4x - 30. What is m∠A?
    9·2 answers
  • A rectangle has an area of 717.8m squared. One of the sides is 7.4m in length. What is the perimeter of the rectangle btw it’s n
    6·1 answer
  • An IQ test is designed so that the mean is 100 and the standard deviation is 1010 for the population of normal adults. Find the
    15·1 answer
  • Factor the following polynomial completely.<br> -0.7x2 - 4.9x + 12.6
    5·1 answer
  • Troy worked for 3 hours and 15 minutes. How should he write that on his time<br> card?
    12·2 answers
  • Paul asked four friends how many hours of tv they watch and their grade on a recent test
    12·1 answer
  • no spaces) 1) Aline has a y-intercept of -4 and slope of 2. What is the equation of this line? point Your answer This is a requi
    8·2 answers
  • PLEASE HELP ME I REALLY NEED HELP
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!