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
Troyanec [42]
3 years ago
10

the sum of three numbers is 2100. the first number x is equal to the sum of the other two (y and z) which are equal to each othe

r. what are the three numbers x,y and z
Mathematics
1 answer:
max2010maxim [7]3 years ago
7 0
We will have a system of equations, and we are going to solve it by using substitution.
Let's make the equations.
x+y+z=2100
z+y=x
Since y and z are equal, I think it is easier for us to have them as one variable for now. Let the value of z and y be a.
These are the equations now.
x+2a=2100
2a=x
Since the second equation is giving the value of x, let it replace the value of x also in the first equation.
2a+2a=2100
4a=2100
2100÷4= 525
so, x and y equal 525. Let's put this in our original equation.
x+525+525=2100
x+ 1,050= 2,100
x= 1,050
So, x=1,050, y= 525 =z.

You might be interested in
Change 7/5 to a whole number
Harlamova29_29 [7]
Write it as a mixed fraction 7/5 = 1 2/5
5 0
3 years ago
Circle the greater andend. draw circle to count on one two or three write the sum
Natali5045456 [20]
Um where the problem or number?
3 0
3 years ago
Anyone know what the answer is
Mars2501 [29]

Answer:

22,-15 ................ maybe

4 0
3 years ago
Can someone pls help?? i’ll mark brainlist
Vaselesa [24]

Answer:

D

Step-by-step explanation:

The line of symmetry is at (-1, 9).

4 0
2 years ago
Read 2 more answers
How do I add fractions​
vivado [14]

Step-by-step explanation:

1 Find common denominator (lower numbers)

2 add numerators(top numbers)

3 put the numerator over the denominator

ex 3/4+2/8

3x2=6,4x2=8

3/4=6/8

6/8+2/8=8/8 or 1

3 0
2 years ago
Read 2 more answers
Other questions:
  • Points A, B, C, and D lie on line segment AD. If AB = x, BC = x + 3, CD = twice the length of BC, and AD = 53, what is the value
    6·2 answers
  • The graph illustrates a reflection of . What is the line of reflection?
    12·2 answers
  • Which ordered pair is the solution to the system of equations?
    13·2 answers
  • Write the general equation for the circle that passes through the points (-5,0), (0.4), and (2,4).
    7·1 answer
  • the cost of building an airplane with 200 seats is about 100$ million if the cost in million of dollars c is proportional to the
    12·2 answers
  • 9+8=17 what number sentence shows the commutative property of addition
    10·1 answer
  • Select the values that make the inequality 4q≥−68 true. Then write an equivalent inequality, in terms of q. (Numbers written in
    10·1 answer
  • Sara paid $20 to join Planet Fitness. She then pays a monthly fee.Her total cost for 24 months was $260. What was the monthly fe
    13·1 answer
  • ∠A and \angle B∠B are complementary angles. If m\angle A=(2x+10)^{\circ}∠A=(2x+10)
    6·1 answer
  • Ms. Chu's clothing store has 34 red t-shirts, 16 blue t-shirts, and 45 green t-shirts.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!