Find the surface area of the square pyramid using its net.

Answer:

use area

Step-by-step explanation:

we can't use volume here since we are dealing with the outside part only

so area of a cylinder is =πr²h

our r represents the radius which is diameter/2

r=7.5/2

=3.75m

our h represents height which is 12.5m

so put in our formula

area = π×(3.75)²×(12.5)

=552.2330836m³

that's it dear

give my answer a brainliest

Two point three tens times m equals zero point forty six hundredths

The given equation in the form of a statement can be written as Two times of the sum of the t and 4 times of q is equal to the sum of two times of q and  four times of t.

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

The given equation can be written in the form of an statement as:

Two times of the sum of the t and 4 times of q is equal to the sum of two times of q and  four times of t.

Hence, the given equation in the form of a statement can be written as Two times of the sum of the t and 4 times of q is equal to the sum of two times of q and  four times of t.

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Answer:

$2

Step-by-step explanation:

15-3=12

12/6=2

Answer:

2$

Step-by-step explanation:

15 (total) - 3 (the magazine) = 12 (how much he spent for all the notepads)

12 (how much he spent for all the notepads) ÷ 6 (how many notepads h ebought) = 2

in other words:

15$ - 3$ = 12$

12$ ÷ 6 $= 2$

he spent 2$ each notepad

The selection depends on individual needs, preferences, and the intended use of the tiny house.

a) To find the amount of space inside each house, we need to calculate the volume for each design.

House on the left:

Volume = length x width x height = 2.5 m x 18 m x 2.8 m = 126 m³

Triangular house:

Volume of a triangular prism = (base area x height) / 2

Base area = (1/2) x base x height = (1/2) x 4 m x 10 m = 20 m²

Volume = (20 m² x 7 m) / 2 = 70 m³

b) When comparing the environmental impacts of each house, several factors need to be considered:

Positive impacts:

1. Material usage: Tiny houses use fewer materials, reducing resource consumption and waste generation.

2. Energy efficiency: Smaller living spaces require less energy for heating, cooling, and lighting, leading to lower energy consumption.

3. Land utilization: Tiny houses can be built on smaller plots of land, preserving green spaces and reducing urban sprawl.

Negative impacts:

1. Construction materials: Although tiny houses use less material overall, the environmental impact depends on the types of materials used. Sustainable and eco-friendly materials should be prioritized.

2. Water and waste management: Adequate provisions for water supply and waste disposal should be implemented to minimize environmental impacts.

3. Transportation: The transportation of tiny houses to their locations can contribute to carbon emissions if not done efficiently.

c) The choice of design for a tiny house depends on personal preferences and priorities. However, considering the provided information:

The house on the left offers a larger interior space of 126 m³, providing more room for living and storage. It may be suitable for individuals or couples who desire more space and functionality within their tiny house.

The triangular house has a smaller interior volume of 70 m³ but offers a unique design and aesthetic appeal. It may be preferred by individuals who prioritize a distinctive architectural style or who are looking for a minimalist and cozy living space.

Ultimately, the selection depends on individual needs, preferences, and the intended use of the tiny house. Factors such as lifestyle, desired amenities, and personal values regarding sustainability and resource conservation should be considered when making the final decision.

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Answer:

i believe the answer would be c!

Step-by-step explanation:

Answer:

parallel

B.

coincident

C.

intersecting

Answer:

I think it's parallel, because they have the same gradient. parallel lines always have the same gradient

Step-by-step explanation:

the correct answer is option a 6a-7

Answer:

(6, 2)

Step-by-step explanation:

I did this over 10 times it's so easy it is like a breeze

Answer:(-2,5)

Step-by-step explanation:

Answer:

Step-by-step explanation:

Hope this helps :)  

Pls make brainliest :3  

And have an amazing day <3

Answer:

128 pieces can be made after cutting the chain

Solution:

Given that, Amy cut 32 ft of chain into pieces that were each 1/4 ft long

To find: Number of pieces after cutting the chain

From given,

total length of chain = 32 feet

length of 1 piece = 1/4 feet

Thus the number of pieces after cutting the chain can be found by dividing the total length of chain by length of 1 piece

number of pieces = total length of chain/length of 1 piece

Substituting the values, we get

number of pieces =  \(\frac{32}{1/4}\)

number of pieces = 32 x 4 =128

Thus 128 pieces can be made after cutting the chain

The equation with infinitely many solutions is given as follows:

a. 3 - 4x = -6(2x/3 - 1/2).

The slope-intercept representation of a linear function is given by the equation presented as follows:

y = mx + b

The coefficients of the function and their meaning are described as follows:

A system of equations will have infinitely many solutions when the slope and the intercept for the two functions is the same.

Hence this is true for option a, as:

-6(2/3x - 1/2) = -12x/3 + 6/2 = -4x + 3.

Which is equals to the left side of the equality.

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Based on the chi-square test, there is no significant evidence to suggest that the die is not balanced.

We have,

To determine if the die is balanced, we can perform a chi-square test of goodness of fit.

The null hypothesis is that the die is balanced, and the alternative hypothesis is that the die is not balanced.

First, let's calculate the expected frequencies for each outcome assuming the die is balanced. Since there are 180 tosses in total, each outcome is expected to have an equal probability of 1/6.

Expected frequency for each outcome

= (Total tosses) x (Probability of each outcome)

Expected frequency for each outcome = (180) x (1/6)

Expected frequency for each outcome = 30

Now, we can calculate the chi-square test statistic using the formula:

χ² = Σ [(Observed frequency - Expected frequency)² / Expected frequency]

Let's calculate the chi-square test statistic:

χ² = [(28 - 30)² / 30] + [(36 - 30)² / 30] + [(36 - 30)² / 30] + [(30 - 30)² / 30] + [(27 - 30)² / 30] + [(23 - 30)² / 30]

χ² = [(-2)² / 30] + [(6)² / 30] + [(6)² / 30] + [(0)² / 30] + [(-3)² / 30] + [(7)² / 30]

χ² = 4/30 + 36/30 + 36/30 + 0/30 + 9/30 + 49/30

χ² = 134/30

χ² ≈ 4.467

Next, we need to compare the calculated chi-square value to the critical chi-square value at a significance level of 0.01 and degrees of freedom equal to the number of outcomes minus 1 (6 - 1 = 5).

Looking up the critical chi-square value in a chi-square distribution table with 5 degrees of freedom and a significance level of 0.01, we find it to be approximately 15.086.

Since the calculated chi-square value (4.467) is less than the critical chi-square value (15.086), we fail to reject the null hypothesis.

Therefore, we do not have sufficient evidence to conclude that the die is not balanced at a 0.01 level of significance.

Thus,

Based on the chi-square test, there is no significant evidence to suggest that the die is not balanced.

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Answer:

(n + 13n)

Step-by-step explanation:

13n (n) = 13n²

add 13n

so 13n (n + 13n) = 13n² +13n

For this problem, we are given a certain function and we need to determine its range.

The function is:

This quadratic function has a minimum value in its range, which is represented by its vertex. The best way to determine the range is to find the coordinates of the vertex of this function, therefore we have:

The minimum value in the range is -16, which means that the range is:

The correct option is the second one.

By reflection triangle JAR across x- axis, we get

By comparing the given options, we can see that the answer is option D

Answer: 2

Step-by-step explanation:

Answer: 2 is the correct answer

Step-by-step explanation:

Answer:

y=bc-abx

Step-by-step explanation:

Given the equation ax + y/b = c, the first thing you'd want to do is isolate the variable that you are trying to solve for.

To do this, you must first subtract ax from both sides, to leave y/b by itself on one side of the equation, resulting in:

y/b = c - ax

Now all you need to do to isolate y, and you can do so by multiplying both sides by b, cancelling out y being divided by b.

b(y/b) = b(c - ax)

y = b(c - ax)

To simplify and fit one of the answer choices, you simply distribute b via multiplication to both c and -ax:

y = bc - abx

Answer:

D,C,E IS CORRECT

Step-by-step explanation:

Answer:

25 sec

Step-by-step explanation:

2.5 cm is 2.5 times 1 cm, so it will take 2.5 times 10 seconds.

2.5 * 10 sec = 25 sec

The snail take 25 seconds to move 2.5 centimeters.

What is Measurement unit?

A measurement unit is a standard quality used to express a physical quantity. Also it refers to the comparison between the unknown quantity with the known quantity.

Given that;

The snail take 10 seconds to move 1 centimeter distance.

Now,

For covering 2.5 centimeters , the time is calculated as;

Since,

The snail take 10 seconds to move 1 centimeter distance.

That is,

⇒ 1 centimeter = 10 seconds

Hence, For the distance 2.5 centimeter, the time is;

⇒ 1 centimeter = 10 seconds

⇒ 2.5 centimeter = 2.5 × 10 seconds

                           = 25 seconds.

Thus, The snail take 25 seconds to move 2.5 centimeters.

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Ava's age is 26 years when Ava and Olivia's ages are consecutive even integers and the sum of Ava's age and 2 times Olivia's age is 74.

According to the question,

Ava and Olivia's ages are consecutive even integers.

Now, let's take Olivia's age to be x years.

So, Ava's age would be (x+2) years because their ages are consecutive even integers. (Even numbers are the number which are divisible by 2.)

We have the sum of Ava's age and 2 times Olivia's age is 74.

So, we have the following expression:

(x+2+2x) = 74

3x+2 = 74

3x = 74-2

3x = 72

x = 72/3 (3 was in multiplication on the left hand side. So, it is in the division on the right hand side.)

x = 24 years

So, Olivia's age is 24 years.

Now, we have:

Ava's age = (x+2) years

Ava's age = (24+2) years

Ava's age = 26 years

Hence, Ava's age is 26 years.

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A researcher predicted that coffee drinkers would perform better on a cognitive task than non-coffee drinkers. Ten subjects were recruited, half of whom drank coffee and half of whom did not. Cognitive performance was measured with a possible score worth 10 points (scores could range from 0-10). The results showed that there was no significant difference in cognitive performance between coffee drinkers and non-coffee drinkers.

To analyze the data and draw conclusions, a t-test for independent samples would need to be conducted. The dependent variable in the study is the cognitive performance score on the task, measured on a scale from 0 to 10.The level of measurement for the dependent variable is interval, as it represents a numerical score on a scale. The independent variable in the study is whether the subjects drank coffee or not. The degrees of freedom for obtaining the critical value would be (n1 + n2 - 2), where n1 and n2 are the sample sizes of the coffee and no coffee groups, respectively. False, this is a one-tailed analysis, as the researcher predicted that coffee drinkers would perform better, implying a directional hypothesis. With α = 0.05, the critical value for the t-test would depend on the degrees of freedom and the chosen significance level. The observed test statistic would be calculated during the analysis using the provided data, and its specific value is not given in the question. Based on the observed test statistic, conclusions can be drawn regarding the statistical significance of the difference in cognitive performance between coffee and non-coffee drinkers. When explaining the results to friends, it would be best to discuss the statistical significance or lack thereof, comparing the cognitive performance scores between the coffee and non-coffee drinking groups.

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Answer:

10

Step-by-step explanation:

Begin with x3 + y3 = 4 . Differentiate both sides of the equation, getting

D ( x3 + y3 ) = D ( 4 ) ,

D ( x3 ) + D ( y3 ) = D ( 4 ) ,

(Remember to use the chain rule on D ( y3 ) .)

3x2 + 3y2 y' = 0 ,

so that (Now solve for y' .)

3y2 y' = - 3x2 ,

.

To calculate the average speed for the entire trip, we need to know the total distance traveled.

To calculate the average speed for the entire trip, we need to know the total distance traveled and the total time taken. Since the individual drove back home using the same path taken to the university, the total distance covered will be twice the distance from home to the university.

Let's denote the distance from home to the university as "d" kilometers. Therefore, the total distance traveled is 2d kilometers.

Given that the individual arrives back home 7.9 hours after initially leaving, we need to find the total time taken for the round trip. The total time consists of the time taken from home to the university and the time taken from the university back home.

Let's denote the average speed for the entire trip as "s" kilometers per hour.

We can use the formula: speed = distance / time

1. Time taken from home to university:

  Distance: d kilometers

  Time: t₁ hours (unknown)

  Speed₁ = d / t₁

2. Time taken from university back home:

  Distance: d kilometers

  Time: t₂ hours (unknown)

  Speed₂ = d / t₂

Since the individual arrives back home after 7.9 hours, the total time taken is the sum of t₁ and t₂:

t₁ + t₂ = 7.9

We want to find the average speed for the entire trip, which is the total distance (2d) divided by the total time (t₁ + t₂):

Average speed = Total distance / Total time

             = 2d / (t₁ + t₂)

To calculate the average speed, we need to find the values of t₁ and t₂. We can do this by solving the equation t₁ + t₂ = 7.9 using the given information.

Once we have the values of t₁ and t₂, we can substitute them into the average speed formula to calculate the average speed for the entire trip.

In summary, to determine the average speed for the entire trip, we need to find the values of t₁ and t₂ by solving the equation t₁ + t₂ = 7.9. Once we have these values, we can calculate the average speed using the formula 2d / (t₁ + t₂), where "d" represents the distance from home to the university.

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Answer:

its b

Step-by-step explanation:

nahazbzbzhzhzhzhshhs

====================================================

Explanation:

We keep multiplying each rate of change by 3

-----------------

Another way to find the answer is to notice we have a geometric sequence going on here. The first term is a = 2 and the common ratio is r = 3.

The nth term is a(r)^(n-1) which becomes 2(3)^(n-1)

Plugging in n = 1 leads to the result 2. If you plug in n = 2, then you should get 6, and so on.

Plug in n = 9 and we get 2(3)^(9-1) = 13,122

Answer:

236.22

Step-by-step explanation:

You can use a converter

Lesly got 14 answers correctly.

Given the following data:

To find the number of answers she got correctly;

\(C = \frac{7}{15}\) × \(30\)

\(C = 7\) × \(2\)

Correct answers, C = 14 answers

Therefore, Lesly got 14 answers correctly.

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The length of the copper in meters is 1.6 times 10^-2 meters.

According to the given question.

The length of a copper is 1.6 centimeters.

As we all know that

1 meter = 100 centimeter

⇒ 1 centimeter = 1/100 meters or 10^-2 meters

So, to find the length of the copper wire in meters. We have to convert 1.6 centimeters to meters.

Therefore,

The length of the copper wire in meters

= 1.6/100 meters

= 1.6 × 10^-2

= 1.6 times 10^-2 meters

Hence, the length of the copper in meters is 1.6 times 10^-2 meters.

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Answer:

Its B: 1.6X10-2m

The solution to the given inequality is x≤14.

Mathematical expressions with inequalities are those in which the two sides are not equal. Contrary to equations, we compare two values in inequality. Greater than (or less than or equal to), less than (or greater than or equal to), or not equal to signs are used in place of the equal sign.

The given inequality is x-6≤8.

Add 6 to both sides of the inequality, we get

x≤14

Interval Notation: (−∞,14]

Therefore, the solution is x≤14.

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Answer:

if your solving for n.....

Step-by-step explanation:

n=3