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evablogger [386]
3 years ago
13

If two times a certain number is added to 11, the result is 20.

Mathematics
2 answers:
Zina [86]3 years ago
8 0

Answer:

2x + 11 = 20

Step-by-step explanation:

let's start by assigning the variable x to certain number , if we two times a certain number we got 2x, and if we added to 11 the result is 20. So, ordering the equation we will obtain:

2x + 11 = 20

Snezhnost [94]3 years ago
7 0

ANSWER

2x+11=20

EXPLANATION

Let the number be x.

Two times this number is 2x

If 11 is added to two times the number, the expression becomes;

2x+11

If the result is 20, then we equate the expression to 20 to get:

2x+11=20

The correct choice is the last option;

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Answer:

Set 2

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First find the median of each set (the median being the number in the middle):

(1) { 4,7,10,13,16} = 10

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(3) {8,9,10,11,12} = 10

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Then find the mean of each set (the mean being average of all the numbers, to find the average add up all the numbers and divide by the amount of numbers):

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(2) {8,9,10,18,19} = 12.8

(3) {8,9,10,11,12} = 10

(4) {1,2,10,11, 12} = 7.2

the answer being 12.8 since 12.8 is greater than 10

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3 years ago
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Answer:

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Answer:

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Step-by-step explanation:

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