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
pentagon [3]
3 years ago
15

if the sum of a number and nine is doubled, the result is seven less than the number. find the number.

Mathematics
1 answer:
avanturin [10]3 years ago
3 0
X=the number we have to find.
This expression "2(x+9)" is when the sum of a number and nine is doubled.
If the result is seven less than the number, we will have: x-7

We can suggest the following equation:
2(x+9)=(x-7)
2x+18=x-7
2x-x=-7-18
x=-25

answer: the number would be:  -25.
You might be interested in
Dave was playing checkers with a friend. The ratio of games Dave won was 10:7. If Dave won 80 games, how many games did his frie
Mila [183]
The answer is 56! How you do this, is you take 80, and you multiply it by 7. Then you divide that answer by 10. Then you have your answer! I’m really bad at math but I do know how to do that!
5 0
3 years ago
Find the system determinant of the given matrix.<br><br>FAST please.
cricket20 [7]

Answer:

the answer is -30

Step-by-step explanation:

| 2 4 |

| 3 -9| = ( 2 * (-9) ) - ( 4 * 3)

= - 18 - 12

= -30

7 0
3 years ago
The traffic fine for speeding in a school zone in one town is $20 plus $6 for every mile per hour above the speed limit that the
sasho [114]
>. $20 + (4 x $6)
>. $20 + $24

= $44
4 0
3 years ago
Sam inherits $250,000, which he invests at a rate of 9% compounded annually. How much will Sam's investment be worth in 25 years
Murljashka [212]

Answer:

the amount that should be worth in 25 years is $2,155,770

Step-by-step explanation:

The computation of the amount that should be worth in 25 years is shown below:

As we know that

Future value = Present value × (1 + rate of interest)^number of years  

= $250,000 × (1 + 0.09)^25

= $250,000 × 1.09^25

= $2,155,770

Hence, the amount that should be worth in 25 years is $2,155,770

7 0
3 years ago
A bag contains 5 red marbles and 4 green marbles. What is the probability of choosing a red marble then a green marble, without
STALIN [3.7K]
It will be 5 out of 9 times you will pull a red marble
5 0
3 years ago
Other questions:
  • Simplify 3x + 2(6x - 5)
    15·1 answer
  • Michelle can run 5.44 miles in 68 minutes. What is Michelle's average speed, in miles per minute?
    7·2 answers
  • A study was conducted to estimate the difference in the mean salaries of elementary school teachers from two neighboring states.
    7·1 answer
  • Tan x = sin x / cos x , therefore tan (90-A) = ? . (All angle measurements are in degrees)
    14·2 answers
  • 3(4x) = (3times4)x property
    6·1 answer
  • What is the product of -5 and 8?<br> -40<br> -13<br> 13<br> 40
    6·2 answers
  • Which inequality represents all numbers x on a number line that are farther from −8 than from −4?
    14·1 answer
  • 1. The diagonal of a quadrilateral
    14·1 answer
  • Simplify i^38 ????????
    14·1 answer
  • What is 4 divided by 610
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!