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Anarel [89]
3 years ago
14

The mean of the 6 items below is 6. 2 x 2 7 4 12 Find the value of x.

Mathematics
1 answer:
Aleks [24]3 years ago
6 0

Answer:

9

Step-by-step explanation:

Mean = sum of number / total number

6 = (2 + x + 2 + 7 + 4 + 12) / 6

Multiply both sides by 6

36 = 27 + x

Solve for x

x = 36 - 27 = 9

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3 years ago
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Rudy invested $2460 in a money market account for 3 and 1/2 years. He earned $452 in simple interest. Which best represents the
antiseptic1488 [7]

Answer:

B. 5 and 1/4 percent

Step-by-step explanation:

Step one:

given

principal= $2460

time= 3 and 1/2 years= 3.5 years

SI= $452

Required

The rate

Step two:

we know that

SI= PRT/100

substituting our data we have

452= 2460*R*3.5/100

452=8610R/100

cross multiply

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2 years ago
Kite LMNO is shown below. <br><br> What is the measure of angle M
goblinko [34]

Answer:

<M = 78°

Step-by-step explanation:

The sum of angles in a kite is 360°.

One of the properties of a kite is that one pair of opposite angles are equal.

Since it is not <L and <N, it must be <O and <M

Therefore:

<O = <M = x

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2x = 360 - 204

2x = 156

x = 156/2 = 78°

This means that <M = 78°

7 0
3 years ago
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