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
Harrizon [31]
3 years ago
14

The sum of 2 times a number and 8 is 7

Mathematics
2 answers:
My name is Ann [436]3 years ago
8 0

Answer:

The number is -1/2

Step-by-step explanation:

Let x be the number

2x+8 = 7

Subtract 8 from each side

2x+8-8 = 7-8

2x = -1

Divide each side by 2

2x/2 =-1/2

x = -1/2

The number is -1/2

3241004551 [841]3 years ago
3 0

Answer:

2x + 8 = 7

x = -1/2

Step-by-step explanation:

"a number" can be signified by a variable.

So 2 times a number would give you 2x

And 8 would mean to add 8.

Is 7 means the end result is 7.

So 2x + 8 = 7

x = -1/2

You might be interested in
The product of 10 and x =
olga_2 [115]

Answer: x exceeds y x - y r minus s r - s Multiplication Multiply, times, the product of, multiplied by, times as much, of × 7 times y 7y The product of x and y xy 5 multiplied by y 5y one-fifth of p 1 5 p Division Divide, divides, divided by, the quotient of, the ratio of, equal amounts of, per ÷ Divide x by 6 x 6 or x ÷6 7 divides x x 7 or x ÷7 7 ...

File Size: 28KB

Page Count: 3

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
X + t = 3.45 Whats x?
sladkih [1.3K]
We can subtract t from both sides to get...

x+t = 3.45
x+t-t = 3.45-t
x = 3.45-t

6 0
3 years ago
Which expression is equivalent to −16y+13 ?
iragen [17]

Answer:

Step-by-step explanation:

13-16y is the same as -16y+13.

7 0
3 years ago
Read 2 more answers
A car was worth $14000 in 2015, and decreased in value to $10500 in 3 years. What is its annual rate of depreciation?
bulgar [2K]
The annual rate of depriciation would be approximately $1,166.60 per year.
5 0
3 years ago
3. From the table below, find Prof. Xin expected value of lateness. (5 points) Lateness P(Lateness) On Time 4/5 1 Hour Late 1/10
wariber [46]

Answer:

The expected value of lateness \frac{7}{20} hours.

Step-by-step explanation:

The probability distribution of lateness is as follows:

  Lateness             P (Lateness)

  On Time                     4/5

1 Hour Late                  1/10

2 Hours Late                1/20

3 Hours Late                1/20​

The formula of expected value of a random variable is:

E(X)=\sum x\cdot P(X=x)

Compute the expected value of lateness as follows:

E(X)=\sum x\cdot P(X=x)

         =(0\times \frac{4}{5})+(1\times \frac{1}{10})+(2\times \frac{1}{20})+(3\times \frac{1}{20})\\\\=0+\frac{1}{10}+\frac{1}{10}+\frac{3}{20}\\\\=\frac{2+2+3}{20}\\\\=\frac{7}{20}

Thus, the expected value of lateness \frac{7}{20} hours.

8 0
3 years ago
Other questions:
  • Which has the greater value 0.3 or 1/3
    10·2 answers
  • Rudy took a test and earned a 92%. Camilo earned a 88% on the same test. If Rudy answered 46 questions correctly, how many more
    9·1 answer
  • Check all the statements that are true:
    14·1 answer
  • URGENT PLS HELP I WILL GIVE MORE POINTS LATER!!!!!!!
    5·1 answer
  • How do you find the property of 34 + 0 + 18 + 26 using Common Core math?
    10·1 answer
  • Jenson is picking out what to wear to school. He has three clean T-shirts: one white, one red, and one orange. He also has two c
    11·1 answer
  • Solve the system of equations by finding the reduced row echelon form of the augmented matrix. Write the solutions for x and y i
    12·1 answer
  • A woman salary of $42 , 000 per week is increased by 10%. what is her new salary?​
    5·2 answers
  • The population of a small town was 3500 in 2005. The population increases by 4% annually. A. Write an exponential growth functio
    12·1 answer
  • Find x pls help me this is due soon
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!