helppp meee please eee

Step-by-step explanation:

a. the volume of the larger barrel =

π.r².h = 3.14 × 2² × 5

= 3.14 × 20

= 62.8 cu. ft

b. the volume of the smaller barrel =

3.14 × 2² × 3

= 3.14 × 12

= 37.68 cu. ft

or it can find the volume by using

the subsraction :

100.48 - 62.8 = 37.68 cu. ft

The option that could be the sides of a Right Triangle is 2.5 cm, 6.5 cm, 6 cm   , the correct option is (a) .

In the question ,

it is given that ,

four options are given that have the three sides of the triangle ,

we have to select the sides that forms a right triangle .

If the sides form a right triangle , then

square of the longest side is equal to square of the other two sides .

In option (a) the  sides are given as 2.5 cm, 6.5 cm, 6 cm .

So ,

(6.5)² = 6² + (2.5)²

42.25 = 42.25

Since LHS = RHS ,

So , Yes , the sides given in option (a) forms a right triangle .

Therefore , the correct option is (a) .

The given question is incomplete , the complete question is

Which could be the sides of a right triangle ?

(a) 2.5 cm, 6.5 cm, 6 cm

(b) 2 cm, 2 cm, 5 cm

(c) 1.5 cm, 2.5 cm, 4 cm

(d) 2 cm, 3 cm, 5 cm

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Approximately 78.76% of women meet the height requirement. Approximately 90.14% of men meet the new height requirement.

The US Navy requires that fighter pilots have heights between 62 inches and 78 inches. Given that information, let's answer the following questions:

(a) Find the percentage of women meeting the height requirement. If there is no information on how the height of women is distributed, let's assume that their height follows a normal distribution. The mean height for women in the US is about 64 inches with a standard deviation of about 2.5 inches. We can use the z-score formula to standardize the height to the standard normal distribution:

z = (x - µ) / σ

where x is the height, µ is the mean, and σ is the standard deviation.

For the lower bound of the height requirement, we have:

z = (62 - 64) / 2.5 = -0.8

For the upper bound, we have:

z = (78 - 64) / 2.5 = 5.6

To find the percentage of women meeting the height requirement, we need to find the area under the standard normal distribution curve between z = -0.8 and z = 5.6. We can use a table or a calculator to do this. Using a calculator, we get:

P(-0.8 ≤ z ≤ 5.6) = 0.9995 - 0.2119 = 0.7876

So, approximately 78.76% of women meet the height requirement.

(b) Find the percentage of men meeting the height requirement. Using the same reasoning, we can assume that the height of men also follows a normal distribution with mean µ = 70 inches and standard deviation σ = 2.5 inches. For the lower bound of the height requirement, we have:

z = (62 - 70) / 2.5 = -3.2

For the upper bound, we have:

z = (78 - 70) / 2.5 = 3.2

To find the percentage of men meeting the height requirement, we need to find the area under the standard normal distribution curve between z = -3.2 and z = 3.2. Using a calculator, we get:

P(-3.2 ≤ z ≤ 3.2) = 0.9982 - 0.0018 = 0.9964

So, approximately 99.64% of men meet the height requirement.

(c) If the height requirements are changed to exclude the tallest 10% of men. If the height requirements are changed to exclude the tallest 10% of men, we need to find the new cutoff height. We can use the inverse normal distribution function (also called the z-score function) to find the z-score corresponding to the 90th percentile of the standard normal distribution. Using a table or a calculator, we get: z = 1.28

This means that the height cutoff for men will be at a z-score of 1.28 above the mean. We can use the z-score formula to find this height:

x = zσ + µ = 1.28 × 2.5 + 70 = 73.2 inches

So, the new height requirement for men will be between 62 and 73.2 inches. To find the percentage of men meeting this requirement, we can repeat the steps we used in part (b), using 73.2 as the upper bound instead of 78. We get:

P(-3.2 ≤ z ≤ 1.28) = 0.9032 - 0.0018 = 0.9014

So, approximately 90.14% of men meet the new height requirement.

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1. Michael is a better grader.

2. Catherine received the better grader.

3. Sam received the better grader.

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Answer:

Rs. 390

Step-by-step explanation:

Question : 30% more than Rs.300.

Answer with explanation

30% of 300 is :

300 × 30 % = Rs. 90

According to the question, they are asking for 30 % more than 300.

For that you have to add  90 ( 30% of 300 ) to 300.

Let us solve now.

Rs. 300 + Rs. 90 0= Rs.390

Therefore , 30% more than Rs.300 is Rs. 390

Hope this helps you :-)

Let me know if you have any other questions :-)

please give me 5 stars

The z-score for x = 30.2 is approximately -0.49.

What is z-score measures?

The z-score, also known as the standard score, is a measure used in statistics to quantify the number of standard deviations that a given data point is from the mean of a dataset.

To calculate the z-score for x = 30.2, we use the formula:

z = (x - μ) / σ

where x is the observed value, μ is the population mean, and σ is the population standard deviation. In this case, we are given the sample mean and sample standard deviation, so we will use them as estimates for the population parameters.

Substituting the given values, we have:

z = (30.2 - 33.7) / 7.2

Simplifying, we get:

z = -0.49

Rounding to two decimal places, we have:

z ≈ -0.49

Therefore, the z-score for x = 30.2 is approximately -0.49.

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Answer:

Complementary angles.

Step-by-step explanation:

Complimentary angles means sum of angles = 90°

Supplementary angles of linear pair means sum of pair of angles = 180°

As shown in the picture attached, sum of both the angles 'a' and 'b' is equal to 90°,

a + b = 90°

Angles 'a' and 'b' will be complementary angles.

You are representing all except (a) the opposite of 15

From the question, we have the following parameters that can be used in our computation:

Moving from 0 to 15 on a number line

From the above, we have

Distance = 15 - 0

So, we have

Distance = 15

Analysing the list of options, we have

Hence, the odd option in the list is (a) the opposite of 15

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Answer:

Which equation represents the hanger below. x represents the triangles while y represents the square

Answer:

Step-by-step explanation:

so first divide

multiply and subtract

and think a little

there its easy :D

The circumcenter of a triangle is the point in the plane equidistant from the three vertices of the triangle.

In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon. The center of this circle is called the circumcenter and its radius is called the circumradius.

Not every polygon has a circumscribed circle. A polygon that does have one is called a cyclic polygon, or sometimes a concyclic polygon because its vertices are concyclic. All triangles, all regular simple polygons, all rectangles, all isosceles trapezoids, and all right kites are cyclic.

A related notion is the one of a minimum bounding circle, which is the smallest circle that completely contains the polygon within it, if the circle's center is within the polygon. Every polygon has a unique minimum bounding circle, which may be constructed by a linear time algorithm.

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Answer:

The answer is B-15:18 based on a 24hr clock

Answer:

\(2x - 4 = 10 \\ 2x = 10 + 4 \\ 2x = 14 \\ x = \frac{14}{2} \\ x =7\)

Step-by-step explanation:

please mark me brainliest please

2x - 4 = 10

Add 4 to both sides:

2x - 4 + 4 = 10 + 4

Combine like terms:

2x = 14

Divide both sides by 2:

2x/2 = 14/2

Simplify:

X = 7

Answer: x = 7

Answer:

Van: 16, Bus: 36

Step-by-step explanation:

13v + 7b = 460

6v + 14b = 600

-26v - 14b = -920

6v + 14b = 600

-20v = -320

v = 16

6v + 14b = 600

96 + 14b = 600

14b = 504

b = 36

Answer: Van: 16, Bus: 36

Answer:

1

Step-by-step explanation:

Answer:

Ok

Explanation:

Step-by-step explanation:(a) To find two other pairs of polar coordinates of (3, π/4):

One with r > 0: (3, 9π/4)

One with r < 0: (-3, 5π/4)

To plot the point (3, π/4), we start at the origin and move 3 units along the line that makes an angle of π/4 radians with the positive x-axis.

(b) To find two other pairs of polar coordinates of (2, -2π/3):

One with r > 0: (2, 4π/3)

One with r < 0: (-2, π/3)

To plot the point (2, -2π/3), we start at the origin and move 2 units along the line that makes an angle of -2π/3 radians (which is the same as 4π/3 radians) with the positive x-axis.

(c) To find two other pairs of polar coordinates of (-2, π/6):

One with r > 0: (2, 7π/6)

One with r < 0: (-2, 19π/6)

To plot the point (-2, π/6), we start at the origin and move 2 units in the direction that makes an angle of π/6 radians with the positive x-axis, but since r is negative, we move in the opposite direction. So we end up at a point on the line that makes an angle of 7π/6 radians with the positive x-axis.

Answer:

B

Step-by-step explanation:

12:

BY, BP, BG, VY, VP, VG, WY, WP, WG, RY, RP, RG

The solution of the given Inequality i.e. -3<2x+3≤5 is x > -3 and x ≤1 (option B).

Inequality:

When the symbols ">", "<", "≤", or "≥" are used to connect two real numbers or algebraic expressions, that relationship is known as an Inequality.

Here the given Inequality is -3<2x+3≤5

⇒ -3<2x+3≤5

⇒-3-3 < 2x+3-3 ≤ 5-3 { add -3 on both the sides }

⇒-6 < 2x ≤ 2

⇒-3 < x ≤ 1

⇒-3 < x and  x ≤ 1

⇒ x > -3 and x ≤1

Therefore,The solution of the given Inequality i.e. -3<2x+3≤5 is x > -3 and x ≤1 (option B).

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The two real numbers with a sum of -15 and a product of -54 are -18 and 3.

Let α and β be the two roots of the quadratic equation.

Then,

sum of roots; α + β = -15

Product of roots:  α β = -54

The quadratic equation in the form of roots are -

x² - (α + β)x + αβ = 0

x² - (-15)x - 54 = 0

x² + 15x - 54 = 0

Factorize the above quadratic equation.

x² + 18- 3x  - 54 = 0

(x + 18)(x - 3) = 0

x = -18 and x = 3

Thus, the two real numbers with a sum of -15 and a product of -54 are -18 and 3.

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Answer:

(1,-9)

Step-by-step explanation:

may be equal to 3 I think

Answer:

D: all real numbers greater than or equal to –3

Step-by-step explanation:

edg2021

Answer: it is 32.6

Step-by-step explanation:

The orginal number that Gavin was thinking of is 32.60.

Let the orginal number be represented with y

Gavin adds 9 to the original number: 9 + y

The answer is doubled: 2(9 + y)

The answer is 83.2: 2(9+y) = 83.2

In order to determine the value of y, take the following steps:

Divide both sides of the equation by 2

9 + y = 41.60

Subtract 9 from both sides of the equation

y = 41.60 - 9

y = 32.60

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Answer:

x = 7.272727...

x ~= 7.27 (nearest hundredth)

x ~= 7.3 (nearest tenth)

Step-by-step explanation:

"Supplementary" means the angles add up to 180°.

100 + 11x = 180

11x = 80

x = 7.272727...

Vineisha earned 110 percent on the science quiz which was about the phases of the moon.

Vineisha earned 22 out of 20 points on her science quiz over the phases of the moon

The percent earned can be calculated by dividing 20 by 22 and then multiplying the result by 100

22/20 × 100

= 1.1 × 100= 110

Hence the percent she earned on the quiz is 110%

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Answer:

Below

Step-by-step explanation:

The diagonal will be  ( remember Pythagorean theorem?) ....this is like the Pyhtag theorem in 3-D

d^2 = 6^2 + 8^2 + 11^2

d^2 = 221

d = 14.9 cm

Answer:

1 over 7 to the 2nd power

Step-by-step explanation:

Answer:

By the order of operations, this expression evaluates to:

73 * 7 - 5 = 511 - 5 = 506

Step-by-step explanation:

You need an expression that is equivalent to this result once the expression is evaluated.

Answer:

(0,-5)

Step-by-step explanation:

You just have to find the middle of each one

From -8 to 8 there are 16 numbers so you divide 16 by 2 which would be 8 and add that to -8 giving you 0

From -10 to 0 there are 10 numbers divided by 2 is 5 so you add 5 to -10 giving you -5

This makes your midpoint (0,-5)