All categories

1 year ago

Please I need help please someone help me.

Mathematics

1 answer:

Dvinal [7]1 year ago

7 0

Answer:

See attached image.

Step-by-step explanation:

See attached image.

You might be interested in

Help fast!! please.

alexira [117]

Answer:

Mean = 10

Variance = 30.89

Standard Deviation = 5.56

Step-by-step explanation:

Find the Mean, Variance and Standard deviation

6, 14, 8, 2, 11, 7, 12, 4, 18, 18

Step 1

We rearrange the data and find the Mean

2, 4, 6, 7, 8, 11, 12, 14, 18, 18

Mean = Sum of values/Number of values

= 2 + 4+ 6+ 7+ 8 + 11 + 12 + 14 + 18 +18/10

= 100/10

= 10

Step 2

We find the variance of this sample days ma

Variance = (x - Mean)²/n - 1

n = 10

Hence,

=( (2 - 10)² +(4 - 10)²+ (6 - 10)²+ (7 - 10)² + (8 - 10)² + (11 - 10)² + (12 - 10)² + (14 - 10)² + (18 - 10)² +(18 - 10)²) /10 -1

= ( 64 + 36 + 16 + 9 + 4 + 1 + 4 + 16 + 64 +64)/9

= 278/9

= 30.88888889

Approximately = 30.89

Step 3

Standard Deviation = √Variance

= √30.89

= 5.5578772926

Approximately = 5.56

6 0

3 years ago

Find the arc length for a circle with diameter 10 inches and central angle 60 degrees. Round to the nearest tenth.

UkoKoshka [18]

Answer:

C. 5.2 cm

Step-by-step explanation:

Arc length formula:

$s = \dfrac{n}{360^\circ} 2 \pi r$

where s = arc length

n = central angle of arc

r = radius of circle

diamter = d = 10 cm

r = d/2 = 10 cm/2 = 5 cm

n = 60 deg

$s = \dfrac{n}{360^\circ} 2 \pi r$

$s = \dfrac{60^\circ}{360^\circ} 2 \times 3.14159 \times 5 ~cm$

$s = 5.2~cm$

Answer: 5.2 cm

6 0

3 years ago

Paco needs at least 3/8 yard of wine to build a model ship. How much wine could he buy?

AleksAgata [21]

I need more information to answer this question, so nobody can answer...

4 0

3 years ago

Farhan orders one plate of seafood fried rice at a restaurant which offers at 25% discount. the Marked price of the seafood frie

ANTONII [103]

Answer:

The total amount of money he has to pay for the dish is $8.3861.

Step-by-step explanation:

Here, the marked price of the seafood fried rice = $9.50

Now, discount on the marked price = 25%

Calculating 25% of $9.50 = $\frac{25}{100} \times 9.50 = 2.375$

So, the discount offered = $2.375

Now, the Selling Price of dish = Marked Price - Discount

= $9.50 - $2.375 = $7.125

Now, here the service charge applied here = 10%

Calculating 10% of $7.125 = $\frac{10}{100} \times 7.125 = 0.7125$

So, the service charge applied = $0.7125

So, the new Selling Price of dish = Selling Price + Service Charge

= $7.125 + $0.7125 = $7.8375

Again, here the GST applied here = 7%

Calculating 7% of $7.8375 = $\frac{7}{100} \times 7.8375 = 0.5486$

So, the GST applied = $0.5486

So, the new Selling Price of dish = Selling Price + GST

= $7.8375 + $0.5486 = $8.3861

Hence, the total amount of money he has to pay for the dish is $8.3861.

5 0

3 years ago

Twice a number X exceed 5 by atleast 4 find all possible value of x

OverLord2011 [107]

Answer:

x≥4.5

x is all number greater than or equal to 4.5

Step-by-step explanation:

2x≥5+4

2x≥9

x≥9/2

x≥4.5

x is all number greater than or equal to 4.5

7 0

3 years ago