All categories

2 years ago

Four times a number added to 9 times the number is 65. What is the number?

Mathematics

2 answers:

MA_775_DIABLO [31]2 years ago

6 0

Answer: 5

Step-by-step explanation:

Let the number = x.

4x + 9x = 65

13x = 65

x = 5

noname [10]2 years ago

5 0

Answer:

Step-by-step explanation:

Let n represent the number. We can use this to set up an equation:

4n+9n=65

Combine like terms:

13n=65

Divide both sides by 13

n=5

The number is 5.

You might be interested in

A tiny songbird called the blackpoll warbler migrates each fall from North America. A tracking study showed one bird flew from V

Alexus [3.1K]

Answer:

Step-by-step explanation:

Given the map coordinates o a bird during travel from Vermont at cordinate (63,45) toto Venezuela at map coordinates (67,10). In order to know how far the bird has travelled, we need to find the distance between the two coordinates first using the formula;

D = $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Given x₁ = 63, y₁ = 45, x₂ = 67, y₂ = 10

$D =\sqrt{(67-63)^2+(10-45)^2}\\ \\D = \sqrt{4^2+(-35)^2} \\\\D = \sqrt{16+1225} \\\\D = \sqrt{1241} \\\\D = 35.2278$

If each map coordinate represents 75 kilometers, then the birds distance in km will be 75*35.2278 = 2642.087km

Hence the birds distance in km will be 2642km to the nearest kilometers

4 0

2 years ago

An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 290 engines

likoan [24]

Answer:

Step-by-step explanation:

Attached is a step by step solution

7 0

2 years ago

What is the volume of the regular pyramid below?

Shtirlitz [24]

Answer:C

Step-by-step explanation:

6 0

2 years ago

Bill lent some money to his two brothers he wrote down the mount so he would not forget the list shows his younger brother with-

pav-90 [236]

<span>C. The older brother payed bill $12 .75 and the younger brother does not owe him any money</span>

8 0

2 years ago

a radio station had 234 tickets to a concert. They gave away 5 times as many tickets to listeners as to employees. how many tick

RSB [31]

Answer:

39 tickets were given to the employees

Step-by-step explanation:

1. Approach

First, list the given information, then form an equation based on the given information. Finally, solve the equation with simplification and inverse operations.

2.Given

A total of 234 tickets were given away

5 times as many tickets were given away to listeners compared to employees

-Call the number of tickets given away to employees (x)

3. Form an equation

(Tickets_given_to_employees) + (Tickets_given_to_listeners) = (Total_tickets)

Substitute,

x + 5x = 234

Simplify,

6x + 234

Inverse operations,

6x = 234

/6 /6

x = 39

5 0

3 years ago