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
melomori [17]
3 years ago
9

The sum of two numbers is 30. the first number is twice the second number. what are the numbers?

Mathematics
1 answer:
Fudgin [204]3 years ago
3 0
Let the numbers be x and y.

by the first statement of the question, we get , x + y = 30.,,..(1)

by the second satement, we get , x = y+ y => x=2y... (2)

from equation (2), let us put the value of x in equation (1),
x + y = 30
=> 2y + y = 30
=> 3y = 30
=> y =30/3
=> y = 10

and x=2y => x = 2*10 = 20

in short, the numbers are 10 and 20

 
You might be interested in
Write a ratio, in the simplest form and a percent for the shaded area (there's a 5x4 box and 6 cubes are shaded)
Alexxandr [17]

Answer:

\%Percent = 30 \%

Step-by-step explanation:

Given

Shaded = 6\ cubes

Box = 5\ x\ 4

Required

Determine the percentage of the shaded cubes

First, we calculate the number of boxes:

Box = 5\ x\ 4

Express as multiplication

Box = 5\ *\ 4

Box = 20

This implies that there are 20 cubes in the box.

The percentage of the shaded cubes is:

\%Percent = \frac{Shaded}{Box} * 100\%

\%Percent = \frac{6}{20} * 100\%

\%Percent = \frac{6* 100}{20} \%

\%Percent = \frac{600}{20} \%

\%Percent = 30 \%

<em>30% were shaded</em>

5 0
2 years ago
What is the y intercept? f(x)=-2^2+4x-6
den301095 [7]

Answer:

The y intercept is -1

Step-by-step explanation:

the y-intercept is when y = 0

f(0) = -2^2 + 4(0) - 5

f(0) = 4 - 5

f(0) = -1

8 0
3 years ago
What is x^2+3x-28 factored
kap26 [50]

Answer: x^(2)-3x-28=0

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
98x24(100-2)x24 using the distributive property
boyakko [2]

Answer:

98 x 24 = 2352

2352 x 2400 = 5,644,800

2352 x (-48) = - 112,896

5,644,800 - 112,896 = 5,531,904

5,531,904 x 24 = 132,765,696

Step-by-step explanation:

8 0
3 years ago
Thisss is late pls helpppp!!
Law Incorporation [45]

Answer

36

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • Can y’all please help really fast
    15·1 answer
  • Ed spoke to his cousin in Australia, who told him it was 28 degrees C that day. Ed wasn’t sure if that was hot or cold, so he co
    12·2 answers
  • A triangle has sides with links that are consecutive odds intergers .The perimeter of the triangle is a hunt is 144 cm what's th
    14·1 answer
  • If n(A)=80,and n(B)=65,what is the least value of n(AuB)=? please help me friends
    14·1 answer
  • Which inequality represents all possible solutions of −6n&lt;−12?
    6·1 answer
  • What is the volume of the right rectangular prism with a length of 2 millimeters, a width of 4 millimeters, and a height of 8 mi
    5·1 answer
  • 4. MN has an equation of 2x - y = 3. Which of the following is the equation of a line
    8·1 answer
  • What is the value of 150 degrees in radians?
    14·1 answer
  • write the formula to calculate area of quadrilateral when Co ordinates are given​ can you answer it please...
    9·2 answers
  • HELP PLS!!<br><br> C= -3<br><br> 5c + 4c + 1c=
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!