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andriy [413]
3 years ago
13

X + 9 =20 x=___ help

Mathematics
2 answers:
irga5000 [103]3 years ago
7 0
You do x=20-9
so x=11
Gelneren [198K]3 years ago
7 0

Answer:

x = 11

Step-by-step explanation:

x + 9 = 20 (Subtract 9 from both sides)

x = 20 -9

x = 11

<u>Verify:</u>

11 + 9 = 20 (Correct)

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The average of five distinct scores has the same value as the median of the five scores. The sum of the five scores is 420. What
givi [52]

Answer:

The sum of five scores that is not the median is, 336

Step-by-step explanation:

Average defined as the  the sum of the observation to the total number of the observation.

Given: The sum of the five scores is 420

Then, by definition of average;

Average of five distinct score = \frac{420}{5} = 84

It is also, given that the average of five distinct scores has the same value as the median of the five scores.

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Since, scores are distinct, therefore

Sum of all scores that is not the median = Sum of five scores - median = 420-84 = 336

therefore, the sum of five scores that is not the median is, 336

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16 increased by twice a number is -24 what is the solution?
Lynna [10]

Let x = the number.

"increased by" tells you we are adding.

"twice a number" tells you 2 times a number.

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Subtract 16 from both sides so that we have the variable on one sides and the constants on the other.

2x = - 24 - 16

2x = - 40

Divide by 2 to isolate the variable.

x = - 40/2 = - 20

Your solution is - 20.

To check your answer, plug in.

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