Compare the amount of sand (volume) in the top cone of the hourglass now to the amount there will be when the height of the sand in the top cone is only 1 inch.

Answer:

a) 2.5π, b) ≈673 times

Step-by-step explanation:

diameter = 2.5

circumference = diameter*π

circumference = 2.5π

5280/2.5π

≈5280/2.5*3.14

≈5280/7.85

≈672.6, ≈673

Answer:

105

Step-by-step explanation:

Area of a trapezoid is given by the formula:

A = (a+b)÷2×h

(where h is the vertical height, and a and b are the parallel lines)

Substituting values given gives us:

A = (6+15)÷2×10

A = 21÷2×10

A = 10.5×10

A = 105

Units will be m² as this is area.

Step-by-step explanation:

Answer:

3 ways for number 1

Step-by-step explanation:

JUST TRUST ME!

Answer: The slope is positive, which tells us that the line has an upward direction.

Step-by-step explanation:

The slope of a line is calculated by finding the difference of the y-coordinates and dividing it by the difference of the x-coordinates.

In this case, the difference of the y-coordinates is -2 - (-14) = 12, and the difference of the x-coordinates is -7 - (-15) = 8.

The slope is therefore 12/8 = 1.5.

To learn more about Slope

https://brainly.com/question/10973849?referrer=searchResults

https://brainly.com/question/19072709?referrer=searchResults

Answer:

I believe it is 8

Step-by-step explanation:

4.8/3 = 1.6

5×1.6=8

Answer:

8 is ur answer

Step-by-step explanation:

Mike has 3 brothers and 3 sisters

Kate has 4 brothers and 2 sisters

all the girls in the family are 3

hope it helps...!!!!

Answer:

I also need help with that

Step-by-step explanation:

sorry

Answer:

A

Step-by-step explanation:

the mean is higher than kindergartens mean which shows its larger and the deviation is lower which shows less variation

Answer:it’s not B, it’s A

Step-by-step explanation:

I took the test and B was wrong, It’s A

Answer:

1. 1.728

2. 1/256

3. 64

4. the original voltage was 3/5

Step-by-step explanation:

The original voltage was 3/5 because 3/5 ^3 is 27/125

Answer:

13

Step-by-step explanation:

To find the interquartile range you would first have to find the median. If you list the number in least to greatest order you will find that the median is 30.5. After you find the median you will spilt the data set up. So on one side it will be 20, 25, 30 and 30, the other side you be 31, 40, 41, and 49. Next, you would find the median of the first set that I listed which is 27.5. You would do the same for the second set and find the median which is 40.5. You would then subtract the first sets median from the second sets median which is 40.5-27.5 and that is 13.

Answer:

B. is the correct order

Step-by-step explanation:

because 9/64 is the least one among all.

∠CDJ = 34°.

Step-by-step explanation:

In this question AK and MJ intersect at 90°.

∠ADC = 4x° and ∠JDC = (3x - 8)°

We have to find the measurement of ∠CDJ.

Since ∠MDA = ∠KDJ = ∠ADJ = ∠MDK = 90°

Therefore ∠ADJ = ∠ADC + ∠JDC = 90°

4x + 3x - 8 = 90

7x - 8 = 90

7x = 98

x = 98/7 = 14

Therefore m∠CDJ = 3x - 8 = 3×14 - 8 = 42 - 8 = 34°

Answer is m∠CDJ = 34°

Answer:

D

Step-by-step explanation:

10 * 1/4 of a pie = 40

Answer:

She is correct

Step-by-step explanation:

You would just have to either cross multiply and divide or just find a common denominator, which ever one is easiest

that is correct 4/5 is equal to 80%

Answer:

D

Step-by-step explanation:

Count how many units are between A and B, then you get D, 7.0 units.

Hope this answers your question!

Answer:

7.3 (B)

Step-by-step explanation:

Distance formula:

[tex]\sqrt{(x_2-x_1))^2+(y_2-y_1)^2}[/tex]

Substitute:

[tex]\sqrt{(3-(-4))^2+(1-3)^2}[/tex] = 7.3

Answer:

-25

Step-by-step explanation:

[tex]128 \div ( {2}^{2})^{3} - {3}^{3} [/tex]

[tex] = 128 \div {4}^{3} - {3}^{3} [/tex]

[tex] = 128 \div 64 - 27[/tex]

USING BODMAS

[tex] = 2 - 27[/tex]

[tex] = - 25[/tex]

Answers to above pictures

1) -25

2) 81m⁴n⁴

3) b¹⁸

4) 3⁴

5) m⁸

Answer:

A

Step-by-step explanation:

Just take any points and find the gradient it will be 2/3

Please give brainliest

Answer:first one probably I think probably

Step-by-step explanation:

Answer:A fraction represents a part of a whole

Step-by-step explanation:

eg: 3/5 by 5/5

please view explanation

The definition of a fraction is a part of a whole .

If a whole is  divided into equal parts, these equal parts are called fractions.

Fractions are written like this :

[tex]\boxed{\\\begin{minipage}{4cm}fractions\\$\displaystyle\frac{x\xrightarrow{numerator}}{y\xrightarrow{denominator}} \\ \end{minipage}}[/tex]

 Where

y = the number of total parts

x = the number of parts taken

Now, it doesn't necessarily have to be a pizza or a cake.

Suppose your companion Danette has 32 pencils. Out of them, 8 pencils are red.

What fraction of the pencils is red?

Total number of pencils = 32 (denominator)

Number of red pencils = 8 (numerator)

So the fraction of red pencils is :

[tex]\boxed{\\\begin{minipage}{4cm}Danette's\:pencils \\ $\displaystyle\frac{8}{32} \\ \end{minipage}}[/tex]

If the numerator and denominator are divisible by the same number, then we can reduce the fraction :

[tex]\boxed{\\\begin{minipage}{4cm}Danette's\:pencils \\ $\displaystyle\frac{1}{4} $\\ \end{minipage}}[/tex]

Questions about fractions? If any, comment ~

hope helpful ~

Answer:

34 ft

Step-by-step explanation:

Answer:

2.8

Explanation:

[tex]r=\sqrt{\frac{v}{\pi h} } = \sqrt{\frac{213}{\pi (8.6)} } = 2.8078[/tex]

Answer:

$45.48

Step-by-step explanation:

Given that:

Gas tank are 11 inches, 1.25 feet and 1.75 feet.

The gas tank is 20% full. Use the current price of gas in your community to find the cost to fill the tank (1 gal = 231 in³)

Current price = 3.79

Solution:

Formula: Volume = LWH

While,

L = Length

W = Width

H = Height

Since we, know that

Gas tank are 11 inches, 1.25 feet and 1.75 feet.

We have to convert either to inches or feet.

Note that: 1 feet = 12 inches

I will convert feet to inches

Thus,

1.25 × 12 = 15

1.75 × 12 = 21

Since 11 is already in inches we don't have to change that.

Now from the formula: LWH

Therefore, we have:

V = 11 × 15 × 21

V = 3465

Now, from the given the gas tank is 20% full

Finding 20%:

3465 × 20 % = 693

Now subtract to find the other 80%

3465 - 693 = 2772

Since 1 gal = 231 in ³

2772/ 231 = 12

Now, 12 mulitply by the current price of gas given:

12 × 3.79 = 45.48

Hence, the cost to fill the tank is $45.48

Kavinsky

Answer:

$45.48

Step-by-step explanation:

Convert to inches

1.25 × 12 = 15

1.75 × 12 = 21

Since 11 is already in inches we don't have to change that.

Now from the formula: LWH

Therefore, we have:

V = 11 × 15 × 21

V = 3465

Now, from the given the gas tank is 20% full

Finding 20%:

3465 × 20 % = 693

Now subtract to find the other 80%

3465 - 693 = 2772

Since 1 gal = 231 in ³

2772/ 231 = 12

Now, 12 mulitply by the current price of gas given:

12 × 3.79 = 45.48

Hence, the cost to fill the tank is $45.48

I really don't know man.......................

Answer:

5(2j+3+j)

= 5(2j) + 5(3) + 5(j) we distribute 5 to all of the expression

= 10j + 15 + 5j connect like terms j

= 15j + 15

So yea, it's like wha the other guy said..

Step-by-step explanation:

Answer:

$24.90

Step-by-step explanation:

2.49 * 10

Answer:

she would need 10 * 2.49 = $24.9

Step-by-step explanation: