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
tia_tia [17]
2 years ago
14

15 POINTSSSSSS!!!

Mathematics
2 answers:
Reika [66]2 years ago
8 0

Answer:

a + b + c = 15

a + 2xb

2xb + -20c

<h3>For the first number, it is 7</h3><h3>For the second number, it is 14</h3><h3>For the third number, it is -6</h3>

<em><u>MATH CHECK:</u></em>

14 - 20 = (-6)

14 + (-6) = 8

8 + 7 = 15

<h3>THIRD NUMBER = (-6)</h3>
Natali [406]2 years ago
5 0

x+y+z=15

y =2x

z=y-20

substitute these equations into the first

x+2x+y-20 =15

now substitute 2x in for y

x + 2x +2x-20 =15

combine like terms

5x-20 =15

add 20 to each side

5x = 35

divide by 5

x=7

y =2x

y =14

z = y-20

z=14-20

z=-6

The third number is -6


You might be interested in
What is the volume of the prism
Sergeeva-Olga [200]

Answer:

Area of the base = 24 cm²

Height of the prism = 5 cm

Volume of the prism = 120 cm³

4 0
3 years ago
Write the slope-intercept form of the equation of each line.​
yanalaym [24]

Answer:

y=mx+b

y=x+3

Step-by-step explanation:

m: 1 (rise over run by 1)

b: 3

7 0
2 years ago
A Dr. needs to prescribe a certain medication for her patient. The amount of medicine prescribed per day is based on the weight
aniked [119]
150/2=75  75(3mg)= 225mg/day
8 0
3 years ago
A triangle has two sides that are 4 inch and 10inch what could be the length of the third side of the triangle
Vlad1618 [11]

Answer:

The length of the third side is both more than six and less than 14

Step-by-step explanation:

8 0
2 years ago
If you have 5 blue marbles, 8 yellow marbles, and 2 green marbles. What is the probability of pulling a yellow marble?
Anika [276]
Add all them up. 5+8+2 = 15

How many yellows? 8/15 = 0.533 ~~ 53%
3 0
2 years ago
Read 2 more answers
Other questions:
  • System of equations ( substitution methods) can someone solve these problems x=3y-5 ; x+y=3 y=x ; 3x+3y=18 y=3x+4 ; 5x-y=0
    15·1 answer
  • A mountain climber ascended 3 4 of a kilometer in 1 12 of an hour. What was the mountain climber’s ascent rate in kilometers per
    9·2 answers
  • A breakfast chef used different amounts of milk when making pancakes, depending Jon the number of pancakes ordered. The results
    13·1 answer
  • A manufacturer produces jeans in 9 sizes, 7 different colors, and 6 different stitching patterns. If a branch store manager orde
    7·1 answer
  • If ON is congruent to OL, find m OML
    9·1 answer
  • How to answer this problem
    13·1 answer
  • Help eve hehedgrhhdhrgr
    13·1 answer
  • 1<br> 2<br> b= 2 in.; c= 6 in.<br> A= sq. in.<br> Please help mark brainliest and big points
    8·1 answer
  • please help I will give 25 points and brainliest to the person who helped I need to see the work though too not just answer thes
    6·2 answers
  • The model below represents an equation. Write the equation that is modeled then find what value of x makes the equation true.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!