Five times a number is the same as 30 more than 8 times the number. Find the number. If n is "the number," which equation could be used to solve for the number? 3n = 30 5n + 8n = 30 5n = 8n + 30

QUESTION POSTED AT 18/01/2020 - 06:39 AM

Answered by admin AT 18/01/2020 - 06:39 AM

Answer:  the correct option is

(C) 5n=8n+30.

Step-by-step explanation:  Given that five times a number is the same as 30 more than 8 times the number.

We are to find the number.

Also, if the number is denoted by n, then we are to select the equation that could be used to solve for the number.

Since n is the given number, so five times the number is written as

5\times n=5n.

Also, 30 more than eight times the number is written as

8\times n+30=8n+30.

Since both the expressions are same, so we get

5n=8n+30\\\\\Rightarrow 8n-5n=-30\\\\\Rightarrow 3n=-30\\\\\Rightarrow n=-\dfrac{30}{3}\\\\\Rightarrow n=-10.

Thus, the required number is -10 and the the equation that is used to solve for the number is 5n=8n+30.

Option (C) is CORRECT.

Post your answer

Related questions

There are 25 nickels and dimes worth $2.15. You are asked to find how many of each there are. Which is a reasonable answer? A) 7 nickels and 18 dimes Eliminate B) 9 nickels and 18 dimes C) 11 nickels and 16 dimes D) 13 nickels and 15 dimes

The answer is Choice A 7 nickels and 18 dimes why? because the question tells you that There are 25 nickels and dimes worth $2.15. So 18 dimes that is worth $1.80 and 7 nickels that is worth $0.35 so you add $1.80 + $0.35 that = $2.15. So the answer again is Choice A 7 nickels and 18 dimes.

ANSWERED AT 21/02/2020 - 11:28 AM


QUESTION POSTED AT 21/02/2020 - 11:28 AM

A state requires that all boat licenses consist of the letter A or M followed by any five digits. What is the number of combinations of letters and numbers available for boat licenses? I WILL MARK BRAINLIEST TO THE BEST ANSWER.

2 choices for first letter (A or M) 
10 choices for first digit (0 to 9) 10 choices for second digit (0 to 9) 10 choices for third digit (0 to 9) 10 choices for fourth digit (0 to 9) 10 choices for fifth digit (0 to 9) 2 x 10 x 10 x 10 x 10 x 10  = 200,000 combinations

ANSWERED AT 21/02/2020 - 11:20 AM


QUESTION POSTED AT 21/02/2020 - 11:20 AM

Can someone please help me with this question! btw thx in advance. Use the remainder Theorem to find the remainder: (x^3-1)/(x-4)

F(x)/(x-a)=f(a)
Here a=4
So we need f(4)
F(4)=(4)^3 -1
F(4)=64-1=63

ANSWERED AT 21/02/2020 - 11:18 AM


QUESTION POSTED AT 21/02/2020 - 11:18 AM

How do i find the answer to find three numbers between -0.62 and -0.61?

To find three numbers between -0.62 and -0.61 you will add a number in the hundredth place.

ANSWERED AT 21/02/2020 - 10:53 AM


QUESTION POSTED AT 21/02/2020 - 10:53 AM

Use substitution to solve each system. -3y = -2x - 1 y = x - 1

-3y = -2x - 1 

-3(x - 1) = -2x - 1 

-3x + 3 = -2x - 1 

-x + 3 = -1 

-x = -4

x = 4 
 
y = x - 1

y = (4) - 1 

y = 3

(4,3) is your solution



ANSWERED AT 21/02/2020 - 10:35 AM


QUESTION POSTED AT 21/02/2020 - 10:35 AM

Amber sold 66 tickets.of these 2/3.what total number they sold

By taking 2/3 of 66 you get the number of 44. Can be done on a basic calculator for future reference.

ANSWERED AT 21/02/2020 - 09:57 AM


QUESTION POSTED AT 21/02/2020 - 09:57 AM

How many solutions can be found for the equation 5x + 3(x − 1) = 10x − 2x − 3? None One Two Infinitely many

Answer:

Option (d) is correct.

The equation 5x + 3(x − 1) = 10x − 2x − 3 will have infinite many solution.

Step-by-step explanation:

  Given : the equation 5x + 3(x − 1) = 10x − 2x − 3

We have to find the number of solution to the equation 5x + 3(x − 1) = 10x − 2x − 3

Consider the given equation 5x + 3(x − 1) = 10x − 2x − 3

This can be written as two equations as

y=5x + 3(x-1)   .........(1)

and y = 10x − 2x − 3 ......(2)

Simplify, both the equations,

y=5x + 3x - 3 = 8x - 3  

and y = 10x − 2x − 3 = 8x -3

Since, both equations are same.

So, the graph of both equation will overlap each other.

Hence,  the equation 5x + 3(x − 1) = 10x − 2x − 3 will have infinite many solution.

ANSWERED AT 21/02/2020 - 09:26 AM


QUESTION POSTED AT 21/02/2020 - 09:26 AM

Help please Solve for z. 5z – 8 = 32 A) z = 4 B) z = 6 C) z = 8 D) z = 4.8

5z-8=32
+8. +8
5z= 40
5/5=40/5
Z=8

ANSWERED AT 20/02/2020 - 11:22 PM


QUESTION POSTED AT 20/02/2020 - 11:22 PM

Explain why the graphing calculator cannot be used to solve or approximate solutions to all polynomial equations.

Did your explanation include the following?

Some polynomial equations have complex solutions.

Therefore, complex solutions cannot be found by graphing the related system or function in the Cartesian (x-y) plane.

Polynomial functions with all complex solutions do not have x-intercepts, and the related system of equations will not intersect.

ANSWERED AT 20/02/2020 - 11:21 PM


QUESTION POSTED AT 20/02/2020 - 11:21 PM

In simplest form, which mixed number is equivalent to 22\8

2 3/4

Because 8 goes into 22 2 times with a remainder of 6. That gives you 2 6/8

6/8 can be reduced to 3/4

ANSWERED AT 20/02/2020 - 11:19 PM


QUESTION POSTED AT 20/02/2020 - 11:19 PM

In 4 years, harry’s age will be the same as jim’s age is now. in 2 years, jim will be twice as old as harry will be. find their ages now.

The answer to this question would be:
Jim     =6 years
Harry =2 years

To answer this question, you need to translate the description into a  mathematical equation. If H= Harry's ages and J= Jim's ages, then the equation should be look like this:

1. H+4= J
2. (J+2)= 2(H+2)
     J+2= 2H+4
     J= 2H +2

If you put the 1st and 2nd equation together, the result would be:
H+4= J
H+4= (2H +2)
H-2H= 2-4
-H= -2
H=2

After that insert the H value to either 1st or 2nd equation.
H+4= J
2+4=J
J= 6

ANSWERED AT 20/02/2020 - 11:19 PM


QUESTION POSTED AT 20/02/2020 - 11:19 PM

If y = 3x -5 find the value of y when x = -1

Plug in negative 1 for x and do order of operations and u should get negative 8

ANSWERED AT 20/02/2020 - 11:18 PM


QUESTION POSTED AT 20/02/2020 - 11:18 PM

If x-y=8,find the value of y when x=3

3-y=8
-y=8-3
y=-5
so just try to re arrange the equation  to find the value for the variable

ANSWERED AT 20/02/2020 - 11:18 PM


QUESTION POSTED AT 20/02/2020 - 11:18 PM

How many times does 9 go into 777?

777÷9=86.3 recurring

ANSWERED AT 20/02/2020 - 11:16 PM


QUESTION POSTED AT 20/02/2020 - 11:16 PM

How many times does 4 go into 85??

4 goes into 85, 21.25 times
4 x 21 = 84
4 x .25 = 1
84 + 1 = 85

ANSWERED AT 20/02/2020 - 11:16 PM


QUESTION POSTED AT 20/02/2020 - 11:16 PM

How do i find 2/4of36?

Two forths is the same as one half ...so just take half of 36 which is 18

ANSWERED AT 20/02/2020 - 11:15 PM


QUESTION POSTED AT 20/02/2020 - 11:15 PM

Find the value of 2a 5b when a=-6 and b=2

2a = -12

5b = 10

Hope this helps
:)

ANSWERED AT 20/02/2020 - 11:14 PM


QUESTION POSTED AT 20/02/2020 - 11:14 PM

Find the nth term of this sequence -2 3 8 13 18

The nth term is 5n-7

ANSWERED AT 20/02/2020 - 11:14 PM


QUESTION POSTED AT 20/02/2020 - 11:14 PM

Charles has 24 marble. he has 6 more yellow marbles than blue marbles. what is the equation

Answer:

Required Equations are x + y = 24 & x - y = 6

Step-by-step explanation:

let x be the no of yellow marbles that Charles has.

and y be the no of blue marbles that Charles has.

Total Marbles that Charles has = 24

⇒ x + y = 24 ..............(1)

Charles has 6 more yellow marbles than blue marbles.

⇒ x = y + 6

    x - y = 6 ......................(2)

Therefore, Required Equations are x + y = 24 & x - y = 6

ANSWERED AT 20/02/2020 - 11:12 PM


QUESTION POSTED AT 20/02/2020 - 11:12 PM

What is 8 less than the product of 13 times a number x is less than or equal to -32?

8 less tha means 8 mins
product of 13 an a number x is 13x

less than or equal to -32


-8+13x≤-32
add 8 to both sides
13x≤-24
divide both sides by 13
x≤-24/13

ANSWERED AT 20/02/2020 - 11:09 PM


QUESTION POSTED AT 20/02/2020 - 11:09 PM

What is 5.82 times 13?

75.66 would be your answer

ANSWERED AT 20/02/2020 - 11:09 PM


QUESTION POSTED AT 20/02/2020 - 11:09 PM

What is 31/2 as a mixed number?

15 and 1/2
because 2 goes into 30 15 times and you are left over with 1/2.

ANSWERED AT 20/02/2020 - 11:09 PM


QUESTION POSTED AT 20/02/2020 - 11:09 PM

What improper fraction can be written as a whole number. 10/6 12\6 14\6 16\6?

12/6 can be written as 2 because 6 can go into 12 two times.

ANSWERED AT 20/02/2020 - 11:07 PM


QUESTION POSTED AT 20/02/2020 - 11:07 PM

HURRY I'LL PICK A BRAINLIEST!!! Solve the equation for a. K = 4a + 9ab A. a = K(4 + 9b) B. a = 4(K + 9b) C. a = 4+9b/K D. a = K/4+9b

Answer:

Step-by-step explanation:

A

ANSWERED AT 20/02/2020 - 11:06 PM


QUESTION POSTED AT 20/02/2020 - 11:06 PM

Nine less than twice a number is thirty one

Answer:

\boxed{x=20}

Step-by-step explanation:

Less than- you had to subtract by the minus sign.

First you had to translate words into an equation.

2x-9=31

Then you solve by equation and add by nine from both sides of equation form.

2x-9+9=31+9

2x=40

Next, you divide by two from both sides of equation form.

\frac{2x}{2}= \frac{40}{2}

40/2=20

40/20=2

2*20=40

20*2=40

x=20

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

ANSWERED AT 20/02/2020 - 11:03 PM


QUESTION POSTED AT 20/02/2020 - 11:03 PM