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
Alex73 [517]
3 years ago
8

The sum of three numbers is 78. The second number is 10 more than the first, and the third number is two times the second number

.
1. Write an equation that will help you determine the 3 numbers.
2. Solve the equation showing all your steps.
3. Tell what the 3 numbers are.
Mathematics
1 answer:
Anestetic [448]3 years ago
4 0

Step-by-step explanation:

a+b+c=78

b=10+a

c=2b

then, we back the first

a+10+a+2b=78

2a+2b=78- 10

2a+2(10+a)=68

2a+2a=48

4a=48

a=12

b=22

c=44

You might be interested in
What is two plus two
kykrilka [37]

Answer:

Two plus two is four.

Step-by-step explanation:

Imagine you have two cookies. Then imagine you have two more cookies.

cookie  cookie

then you add

cookie  cookie

How many cookies do you have now?

8 0
3 years ago
20 POINTS PLEASE HELP ME!!!
Minchanka [31]

Answer:

p = -1

x=10

m < 7

Step-by-step explanation:

4(3p + 6 ) = 12

Distribute the 4

12p +24 = 12

Subtract 24 from each side

12p+24-24 = 12-24

12p = -12

Divide by 12

12p/12 = -12/12

p = -1


-5(x -4) = -30

Distribute the -5

-5x+20 = -30

Subtract 20 from each side

-5x+20-20 = -30-20

-5x=-50

Divide by -5

-5x/-5 = -50/-5

x=10



-3m + 15 > -6

Subtract 15 from each side

-3m + 15-15 > -6-15

-3m >-21

Divide by -3   remember to flip the inequality

-3m/-3 < -21/-3

m < 7


5 0
3 years ago
HELP ASAP!!!
konstantin123 [22]
A is the answer because its right according to the chart
8 0
3 years ago
Read 2 more answers
Help me with factor trees pls it’s timed <br> There is a photo if u click
oksano4ka [1.4K]

Answer:

                        28

                  4             7

           2             2

here it is, hope it helps :)

3 0
2 years ago
Plz help!! Will give 30 points!!
Inessa [10]

Answer:

B) 12

Step-by-step explanation:

C is the circumference, d is the diameter, and r is the radius.  They are related by the following equations:

d = 2r

C = πd = 2πr

If d = 6.0, then r = 3.0.

If C / C' = 0.25, then:

(2πr) / (2πr') = 0.25

r / r' = 0.25

3 / r' = 0.25

r' = 12

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of 24 + 32 - 5?<br> A. 6<br> O B. 9<br> O C. 12<br> O D. 17<br> E. 20
    12·2 answers
  • I need someone whose willing to help me with the other 100 questions i dont know (not joking) BUT PLS HELLPPPP
    5·1 answer
  • Express each ratio as a unit rate. Round to the nearest tenth, if necessary. $175 for 5 football game tickets
    11·2 answers
  • The solution of the given system of linear equations will lie in which of the following quadrants?
    8·1 answer
  • Solve four and three fourths minus one and one third.
    8·2 answers
  • What's 100 divided by 42
    8·1 answer
  • A restaurant gets 593.31 every week. How much will they make in a year? Round your answer to the nearest cent
    6·2 answers
  • Pls help I need it now
    11·1 answer
  • The length of a room is 23 1/2 feet. When using a 1/8 inch = 1 foot scale, find the length of
    15·1 answer
  • PLEASE HELPPP! I'LL GIVE BRAINLEST​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!