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
Neporo4naja [7]
3 years ago
8

Fifteen less than twice a number is 21. What is the missing number? |

Mathematics
1 answer:
Vikentia [17]3 years ago
4 0

Answer:

2y - 15

Step-by-step explanation:

well 15 LESS than TWICE a number. okay so let’s start off by making a variable for the unknown number.... y. the variable is y. so now we have to think, TWICE that number, but we don’t know the number.

Now that we have the variable and we know it has to be doubled, let’s start off making the first half... we can out that into 2y. which is 2 multiplied by the unknown number.

now that we have the first half done, we have to take the 15 less. Less can mean  or subtract in this kind of situation. but for this certain scenario, it will be subtraction. so the equation would be 2y - 15.

You might be interested in
Is the square root of negative 5 a rational irrational or imaginary
Travka [436]
I believe it is an imaginary number because imaginary numbers are square roots of negative numbers.
6 0
3 years ago
Read 2 more answers
What is the main difference between investing and saving?
SashulF [63]

Answer:

B.) Investing has the risk of losing principal, whereas saving does not.

Step-by-step explanation:

Saving can be accomplished a number of ways, including putting the money in a cookie jar (where it will not earn interest). Most savings institutions (banks, credit unions, and the like) are governed by rules that help to ensure the availability and safety of the balance. Often, such institutions are insured so that depositors are protected against loss of principal.

Many investment opportunities are governed by no such rules. The invested amount may be unavailable for perhaps a lengthy period of time, and any return on the investment may be dependent upon factors not under the control of the party accepting the money. There is the opportunity for complete loss of the invested amount, and the possibility of incurring additional liability in some cases.

Investment in certificates that are traded on a regulated exchange will be subject to the exchange rules, generally including the requirement that the investor be fully informed of the risks. That doesn't mean there is no risk—it just means the investor is supposed to be made aware of it.

5 0
3 years ago
What is the most convenient method to solve the quadratic equation ( x + 4 )² = 15
IgorC [24]

Answer:

Factoring

Step-by-step explanation:

(x+4)² = 15

x² + 8x + 16 = 15

x² + 8x + 1 = 0

x =  \frac{ - 8 +  \sqrt{64 - 4} }{2}  =  - 4 +  \sqrt{15}  \\  \\ x =  \frac{ - 8 -  \sqrt{64 - 4} }{2}  =  - 4 -  \sqrt{15}

I hope this helps you :)

7 0
3 years ago
Read 2 more answers
If 3 dozen cookies require 1 cup of sugar, write a direct variation equation in two variables that represent this situation. Mak
PIT_PIT [208]

Answer:

Step-by-step explanation:

10 multiply 1/3 makes three full cups. Fu*kin* idiot

5 0
4 years ago
A student is 90 cm tall and growing at a rate of 3 cm per month. At this rate, in how many months will the student grow to a hei
Zolol [24]

Answer:

14 months

Step-by-step explanation:

14x3=42

42+90= 132

6 0
3 years ago
Other questions:
  • I need a hand please
    12·1 answer
  • Write the ratio as a fraction in the lowest terms 17 minutes to 3 hours
    15·1 answer
  • HELP WITH THIS QUESTION PLEASE!!
    10·1 answer
  • "Write 1/100 using a negative exponent other than -1. Answer: 10^-2." Why is 10^-2 the answer?
    6·1 answer
  • Jaden makes 63% of the free throws he shoots. About how many shots do you predict he will have to take to make 15 free throws?
    9·2 answers
  • Plsss help ASAP I need a good grade
    12·1 answer
  • In a flower garden there are 3 tuilps for every 7 daisies if there are 21 tulips his many daisies are there​
    7·2 answers
  • What is the slope of the line that passes through the points (10,3 and (7,0)
    5·1 answer
  • Given that (-2,-2) is on the graph of f(x), find the corrisponding point for the function f(x)+5
    6·1 answer
  • I need help please!!! thank you so much to the person who is going to help me.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!