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
forsale [732]
3 years ago
7

A first number plus twice a second number is 24. twice the first number plus the second totals 21. find the numbers.

Mathematics
1 answer:
Ulleksa [173]3 years ago
4 0
We do like the following:
Set the first number is a and the second is b.
We have two equations: a+2xb=24, 2xa+b=21
And we have 2xa+4xb=48 or 2xa=48-4xb
So: 48-4xb+b=21 or -3xb=21-48=-27 and we got b=-27:(-3)=9 and a= 6
a=6 and b=9
You might be interested in
Find the volume of this triangular prism.<br> 6 cm<br> 7 cm<br> 10 cm
Katena32 [7]

Answer:

L×W×B

10×7×6

=420cm of triangular prism

4 0
2 years ago
Find g (-6) if g (x)=5 x - 7
musickatia [10]

Answer:

Your answer is -37.

Step-by-step explanation:

g(-6)=5(-6)-7

g(-6)=-30-7

g(-6)=-37

7 0
2 years ago
The table giver you 4 tree's and I forget what the rest said so I am just lazy and took a sreenshot.
ser-zykov [4K]
<h2>Answer:</h2>

The Maple tree.

<h2>Step-by-step explanation:</h2>

The Sycamore is 15 and 2/3 feet tall, which is 15.667 feet.

The Oak is 14 and 3/4 feet tall, which is 14.75 feet.

The Maple is 15 and 3/4 feet tall, which is 15.75 feet.

The Birch is given as 15.72 feet.

Out of these, the tallest is the Maple, which is at 15.75 feet.

4 0
2 years ago
A line passes through the points (5,22) and (7,24). Write a linear function rule in terms of x and y
nikdorinn [45]
It 20 because it is and you multiply
4 0
3 years ago
Factor 3x^3 - 15x^2 + 18x.
Usimov [2.4K]

Step-by-step explanation:

3 x^3-15x^2+18x 3(x^3-5x^2+6x)

8 0
2 years ago
Other questions:
  • -3(k-8)-(k+5)=23 please explain how to do this
    13·2 answers
  • Choose the correct simplification of the expression (−5a5b4c3)0.
    7·2 answers
  • Given, line l and line m are parallel. m&lt;3=m&lt;7 If m∠2=60° m&lt;6=115° m∠3=
    6·1 answer
  • Is it correct number 22?
    13·2 answers
  • How many solutions can be found for the equation 4x − 8 − 4x = 9?
    14·2 answers
  • What is the solution to 5/8 ÷ 3/4 ?
    11·1 answer
  • Simplify the expression. 6(x+4)+I
    10·2 answers
  • 2 and 1/4 - 3/4 simplest form
    15·1 answer
  • Name five whole numbers that can be expressed as the difference of two perfect squares. Show the math!
    10·2 answers
  • Need help benja plz...​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!