Can someone help me with this problem ?

Answer:

n = 5/2

Step-by-step explanation:

Add all of the sides up to make an equation

(5n - 6) + n + (2n + 1) = 15

8n -5                          = 15

8n  =  20

n    = 5/2

Answer:

[tex]0.4cm[/tex]

Step-by-step explanation:

[tex]n + 2n+1 + 5n-6 = 15\\[/tex]

[tex]8n -5 = 15[/tex]

[tex]8n = 20[/tex]

[tex]n = \frac{8}{20}[/tex]

[tex]n = 0.4[/tex]

[tex]\therefore[/tex] the value of [tex]n[/tex] is [tex]0.4cm[/tex]

Hope this helps :)

Answer:

The volume of the metal used to make the pipe is [tex]\mathbf{1,680\pi\ cm^3}[/tex]

Step-by-step explanation:

The Volume of a Cylinder

Given a right cylinder of base radius r and height h, the volume is calculated as follows:

[tex]V=\pi r^2h[/tex]

We are given the dimensions of a cylindrical metallic pipe whose external diameter is de=12 cm and the internal diameter is di=8 cm. The height is h=21 cm.

The volume of the metal used in making the pipe is the difference between the external volume and the internal volume.

Calculating the external volume:

[tex]V_e=\pi r_e^2h[/tex]

[tex]V_e=\pi 12^2*21[/tex]

[tex]V_e=3,024\pi\ cm^3[/tex]

Calculating the internal volume:

[tex]V_i=\pi r_i^2h[/tex]

[tex]V_i=\pi 8^2*21[/tex]

[tex]V_i=1,344\pi\ cm^3[/tex]

The volume of metal is:

[tex]V_m=V_e-V_i=3,024\pi\ cm^3-1,344\pi\ cm^3[/tex]

[tex]V_m=1,680\pi\ cm^3[/tex]

The volume of the metal used to make the pipe is [tex]\mathbf{1,680\pi\ cm^3}[/tex]

Answer:

j,z

Step-by-step explanation:

Answer:-4.5, -0.5, 0.3, 0.7, 2.3

Step-by-step explanation:

Answer:

C is the answer?

Answer:

If you are looking for the slope, it equals -6

Step-by-step explanation:

(3,4) (5, -8)

[tex]\frac{4+8}{3-5}[/tex] = [tex]\frac{12}{-2}[/tex] = [tex]\frac{6}{-1}[/tex] = -6

Hey there!

The formula to this equation is: y2 - y1 /x2 - x1

• y2 = -8

• y1 = 4

• x2 = 5

• x1 = 3

EQUATION:

-8 - 4/5 - 3

-8 - 4 = -12

5 - 3 = 2

NEW EQUATION: -12/2

-12/2 = your answer

-12 / 2 = -6 because 2 • -6 = -12

Answer that you’re looking for: -6

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

Guide to REMEMBER :

- Negative & Negative = Positive

- Negative & Positive = Negative

- Positive & Positive = Positive

- Positive & Negative = Negative

Answer:0.3

Step-by-step explanation:

3.60/12=0.3

Answer:

153 in²

Step-by-step explanation:

first look at yellow area, then red area, then green area.

48 + 50 + 55 = 105 + 48 = 153 in²

hope this helps ^-^

Answer:

Answer is (A) -4x^8

Step-by-step explanation:

Answer:

☆This is because ascending, not descending when looking on a graph.

☆The slope's number is a positive number.

Answer:

second vala hai correct Answer

Answer:

[tex](\sqrt{x})^{2} = \sqrt{x^{2} }[/tex]

Answer:

$14,900

Step-by-step explanation:

Given that,

Miguel made $6,743 in February and $8,152 in March.

We need to find the amount of money Miguel earned.

It is equal to the sum of amount made in February and March.

Sum = $6,743 + $8,152

= $14895

Nearest hundred :

Sum = $14,900

Hence, the total amount is $14,900.

Answer:

Least no of packs = 120

Step-by-step explanation:

Given that,

Plastic plates come in packs of 8, plastic utensils come in packs of 12, and plastic cups come in packs of 20.

We need to find least numbers of packs you should buy in order to have the same number of plates, utensils, and cups.

It means we need to find the LCM of 8,12,20

Prime factorisation of 8 = 2×2×2

Prime factorisation of 12 = 2×3×2

Prime factorisation of 20=2×5×2

LCM = 120

Hence, there are 120 least number of packs you should buy in order to have the same number of plates, utensils, and cups

Answer:

54 coins left

Step-by-step explanation:

72 x .25 = 18

72 - 18 = 54

Answer:

100% - 25% = 75%

72 x 0.75 = 54

He had 54 coins left

Step-by-step explanation:

Ok, to solve this question, first divide 72 by 100--- 72/100=.72

next, multiply .72*25 and u get--- 18

next subtract 72 and 18--- 72-18=54

the answer is the boy has 54 coins left

hope this helps!

Answer:

Yes. Her sample is unrepresentative of the population in her community.

Step-by-step explanation:

a) Data and Calculations:

Population                Study  Census %     Representative       Over/Under

                               Sample                           Sample              Representation

Whites                       300        48%           288 (48% * 600)         12

African Americans      80         12%             72 (12% * 600)           8

Latinos                       100         18%           108 (18% * 600)           (8)

Asians                         40          9%             54 (9% * 600)           (14)

Others                        80         13%             78 (13% * 600)            2

Total                         600      100%          600                                0

b) There is selection bias in her sample. A representative sample of 600 is the subset of a population that seeks to accurately reflect the characteristics of the larger group.   When the sample for each category does not accurately represent the characteristics or attributes of the population categories, then it is unrepresentative.

Sampling is the collection of randomly chosen data from the entire population to come to an end conclusion about the variable to be determined or known.

Yes, the sample is unrepresentative of the entire population.

The reason for the sample being unrepresentative of the entire population in her community is that the selected sample is deviating a lot from the population count.

As per the computation, there is selection bias in her sample. This is because the representative sample is 600 that represents the entire population and reflects the characteristics of the larger group.

The sample becomes unrepresentative when the sample chosen does not accurately represent the true attributes of the population.

To know more about sampling, refer to the link:

https://brainly.com/question/350477

Answer:

the mayor will lose in a close race

Step-by-step explanation:

Step-by-step explanation:

provide more details, please

Answer:

The emergency medical technician made $739.12 per week

Step-by-step explanation:

Given that:

Per hour pay = $19.71

One month earning of emergency medical technician = $3326.06

Weeks in the following month = 4.5

For per week income, we will divide the monthly salary by number of weeks in the month.

Per week income = [tex]\frac{3326.06}{4.5}[/tex]

Per week income = $739.12

Hence,

The emergency medical technician made $739.12 per week

Answer:x=7

Step-by-step explanation:

Steps down below. Remember that angles on a straight line add up to 180 degrees

Answer:

10x + 5y = 50

Step-by-step explanation:

we use the rectangle rule

96-92=4 parts of 92 octane

98-96=2 parts of 98 octane

4x+2x=12

6x=12

x=2

4x=8 liters of 92 octane

2x=4 liters of 98 octane

Answer:

3.

7d=7x7=49

2g=2x10=20

49-20 = 29

Step-by-step explanation:

4.

bc=8x2 = 16

c^3= 2x2x2 =8

bc - c^3 = 16-8 =8

Answer:

240 miles/ 8 miles

Step-by-step explanation:

you can't measure a mile per mile (/=per)

Answer:

This is what I got, hope u get it right

Step-by-step explanation:

The Giant Hummingbird beats its wings 10-15 times per second. The fastest recorded rate is about 80 beats per second on an Amethyst Wood- star Hummingbird.

85 is the answer........

Answer:

.16 or 4/25

Step-by-step explanation:

Answer:

4/25

Step-by-step explanation:

[tex]\frac{4}{5}[/tex]×[tex]\frac{1}{5}[/tex]

multiply tops together and denominators together and get [tex]\frac{4}{25}[/tex]

Answer:

y = 2x

Step-by-step explanation:

Y = 2x