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3 years ago

PLEASE ANSWER ILL GIVE YOU BRAINLIEST

Mathematics

1 answer:

professor190 [17]3 years ago

5 0

Answer:

v = 196.25

Step-by-step explanation:

v = 3.14*r^2*h

v = 3.14*5^2*2.5

v = 196.25

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Romashka [77]

9.42 Units

Step-by-step explanation:

Since the angle shown is 90 degrees we can deduce that the rest of the arc is 270 degrees therefore we can make the fraction:

270/360; 360 being the total angle measurement of a circle

270/360 simplifies to 3/4

The fraction represents how much of the circle that arc covers

Now we have to find the circumference which would be

2(3.14)r

r = 2 therefore: 2(3.14)2 = 12.56

Now that we have the circumference of the WHOLE circle we multiply it by 3/4 to find out the arc length

Which gives us 9.42

8 0

3 years ago

What does the product 110 × n compared to the product 11 x n ( hint n represents any number)

Zigmanuir [339]

The product of 110 times n is always 10 times the product of 11 times n

7 0

4 years ago

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The data below gives the mean price (in cents) of a liter of regular gasoline at self-service filling stations at a sample of si

bogdanovich [222]

Answer:

135.05 ; 2.762 ; (133.201, 136.899) ; (132.840, 137.260)

Step-by-step explanation:

Given the data:

Urban area Price/liter

St. John, NL 137.1

Halifax 133.6

Montreal 136.2

Regina 132.3

Saskatoon 132.2

Yellowknife 138.9

Mean = (137.1 + 133.6 + 136.2 + 132.3 + 132.2 + 138.9) / 6

= 810.3 / 6

= 135.05

Standard deviation (σ) : √Σ(X - mean)²/n-1

(137.1 - 135.05)^2 + (133.6 - 135.05)^2 + (136.2 - 135.05)^2 + (132.3 - 135.05)^2 + (132.2 - 135.05)^2+ (138.9 - 135.05)^2 = 38.135

√(38.135 / (6 - 1))

= √7.627

= 2.7617023

= 2.762

C.)

90% confidence interval of the mean :

Mean ± Zcrit * σ/√n

Zcrit at 90% = 1.64

135.05 ± 1.64 * (2.762/√6)

135.05 ± 1.64 * 1.1275817

Lower Value = (135.05 - (1.64 * 1.1275817)) = 133.201

Upper Value = (135.05 + (1.64 * 1.1275817))) = 136.899

Confidence interval = (133.201, 136.899)

D.)

95% confidence interval of the mean :

Mean ± Zcrit * σ/√n

Zcrit at 95% = 1.96

135.05 ± 1.96 * (2.762/6)

135.05 ± 1.96 * 1.1275817

Lower Value = (135.05 - (1.96 * 1.1275817)) = 132.840

Upper Value = (135.05 + (1.96 * 1.1275817)) = 137.260

Confidence interval = (132.840, 137.260)

4 0

3 years ago

Divide these polynomials (8x^3+2x^2-7x+2)/(2x-1)

dedylja [7]

Answer:

$4x^2+3x-2$

Step-by-step explanation:

We are given that

$\frac{8x^3+2x^2-7x+2}{2x-1}$

We have to divide the polynomials.

We have

Divisor polynomial= $2x-1$

Dividend polynomial= $8x^3+2x^2-7x+2$

$\frac{8x^3+2x^2-7x+2}{2x-1}=4x^2+3x-2$

Quotient= $4x^2+3x-2$

Remainder=0

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4 years ago

Which step will get you closest to the solution of this equation?<br> 5.2 – 2)=7<br> (Imagine math)

Nitella [24]

Answer:

I'm pretty sure it's the to right one

Step-by-step explanation:

8 0

3 years ago

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