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vodomira [7]
3 years ago
9

I will mark brainliest please help​

Mathematics
2 answers:
eimsori [14]3 years ago
7 0

Answer:

2/3, 2 to 3, 2:3

Step-by-step explanation:

Evgen [1.6K]3 years ago
6 0
2/3, 2 to 3, 2:3
Hope this helpedd :)
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3. An electric bill is an essential expense for young people who get their first
Dmitrij [34]

Answer:

Mean = $123.8

Range= $72

Variance= $607.344

Standard deviation=$ 24.64

Step by step explanation:

The list of the data of electricity bill on ascending order

$88,$90,$90,$95,$110,$115,$120,$126,$144,$150

Mean = (summation of($88,$90,$90,$95,$110,$115,$120,$126,$144,$150))/10

Mean = 1238/10

Mean = $123.8

Range= highest value- Lowest VA

Range= 150-88

Range= $72

Variance=( (88-123.8)²+(90-123.8)²+(90-123.8)²+(95-123.8)²+(110-123.8)²+(115-123.8)²+(120-123.8)²+(126-123.8)²+(144-123.8)²+(150-123.8)²)/10

Variance= (1281.64+1142.44+1142.44+829.44+190.44+77.44+14.44+4.84+295.84+408.04+686.44)/10

Variance= 6073.44/10

Variance=$ 607.344

Standard deviation= √variance

Standard deviation= √ 607.344

Standard deviation=$ 24.64

6 0
3 years ago
An express train makes a run of 240 km at a certain speed. Another train whose speed is 12 km/hr less takes an hour longer to co
Evgesh-ka [11]

Answer:

12.63 km/hr

Step-by-step explanation:

Given the distance=240km

At 12 km/hr it will take =240/12 =20

time for Express train = 20-1=19

speed=240/19=12.63...km/hr

3 0
3 years ago
Read 2 more answers
Miguel bought 8 equally priced pens for $3.84.<br><br> How much will 15 of these pens cost?
Snezhnost [94]

Answer:

$7.20

Step-by-step explanation:

If 8 pens cost $3.84, we need to find out how much ojne pen costs.

To find out the cost of one pen we need to divide $3.84 by 8.

$3.84 / 8 = $0.48

1 pen cost $0.48

We then need to work out the cost of 15 pens. So from using the information that one pen costs $0.48 we can multiply that by 15 to find out the answer.

$0.48 x 15 = $7.20

15 pens cost $7.20

5 0
2 years ago
1/3 (12x-24) =16
liraira [26]

Answer:

6

Step-by-step explanation:

Multiplying both sides by 3, we have 12x - 24 = 48. Adding both sides by 24, we have 12x = 72. That means x = 6

Can I have brainliest

4 0
3 years ago
Identify the postulate or theorem that proves p∥q. Please help!! <br><br> Given: ∠4≅∠6
Brilliant_brown [7]

<4 = <6

alternate interior angles theorem

Answer is the third option

8 0
3 years ago
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