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
sukhopar [10]
3 years ago
7

Twice the sum of 18 and x is 42

Mathematics
1 answer:
nydimaria [60]3 years ago
4 0

Answer:

x=3

Step-by-step explanation:

We are taking 2 times the sum ( addition) of 18 and x

2 ( 18+x) = 42

Divide each side by 2

2 /2 ( 18+x) = 42/2

18+x = 21

Subtract 18 from each side

18+x-18 = 21-18

x = 3

You might be interested in
What’s the answer?????
jeka57 [31]
The answer will be narrow
5 0
2 years ago
Which does not show a direct variation between x and y?
Zepler [3.9K]
A direct variation is a mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other. In other words, a direct variation is where y = x * (constant).

In answer a, y = x*.5, so it is a direct variation.
In answer c, y = x* \frac{1}{9}, so it is a direct variation.
In answer d, y = x*2, so it is a direct variation,

Only answer b is left, which means the answer must be 'b'. 

We also know 'b' is the answer because it cannot be expressed as <span>y = x * (constant). Instead, it is expressed as </span>y =  \frac{constant}{x}, which is not the same thing and is therefore not a direct variation.

Hope I helped, and let me know if you have any questions :)
8 0
3 years ago
Read 2 more answers
Hurry pls it’s very confusing
Jobisdone [24]

Answer:

1/4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
(ar^b) ^4 = 16r^20 where a and b are positive integers work our a and b​
ivolga24 [154]

Answer:

a = 2

b = 5

Step-by-step explanation:

Given :

(ar^b)^4 = 16r^20 ; a and b are positive integers :

Opening the bracket :

a^4r^4b = 16r^20

a^4 = 16 - - - - - (1)

r^4b = r^20 - - - (2)

a^4 = 16

Take the 4th root of both sides :

(a^4)^(1/4) = 16^1/4

a = 2

From (2)

r^4b = r^20

4b = 20

Divide both sides by 4

4b/4 = 20/4

b = 5

Hence ;

a = 2

b = 5

6 0
3 years ago
What is the rule for the following sequence of numbers: 2, 7, 17, 37, ?
vredina [299]
It should be C
The sequence goes 2, 7, 17, 37
2 * 2 = 4 + 3 = 7
7 * 2 = 14 + 3 =17
17 * 2 = 34 + 3 =37
and so on.
YOU'RE WELCOME :D
3 0
3 years ago
Other questions:
  • What Is 1,270 rounded to the nearest hundred?
    12·1 answer
  • For all values of x. which expression is equivalent to (3x + 2) + 2(3x +2)
    15·1 answer
  • Please help I suck at math ​
    6·2 answers
  • The number y of deer in a county after x years can be modeled by y=0.75x^2 + 10.5x + 1300. When were there about 2000 deer? Roun
    9·1 answer
  • All books are on sale for 25% off. If Pam bought a book originally priced at $32 and had a coupon for another 25% off, how much
    15·1 answer
  • Anyone know this plzzz ill give brainly :)
    5·2 answers
  • 7. Which of the following is equal to<br>AnB ?​
    12·1 answer
  • Why was one trinomial jealous of the other trinomial?
    11·1 answer
  • The dot plot below shows the drawing scores of some students: A number line is shown from 1 to 5 in increments of 1. The horizon
    13·1 answer
  • Justin has 750 to buy supplies for the school computer lab he buys 11 boxes of printer paper that costs 49 each how much money d
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!