Mr Hassan gave his year 7 class a test on Friday. the highest possible mark for the test was 10.​

Answer:

If u consider Pi as 3.14 , the answer would be 4.18 .

Step-by-step explanation:

Hope it helps u , good luck ^.^

Rate of the jet in still Air is 716 miles per hour and

wind speed is 80 miles/hour.

The velocity of an item in relation to another observer is known as its relative velocity. It is the pace at which one item's relative location changes in relation to another object over time. When two bodies are travelling in opposing directions, their relative velocity is at its highest. They are approaching one another.

Let ‘X’ be speed of jet and

'Y’ be speed of Wind

Relative velocity when jet travels against wind: X - Y = ( 2544 / 4 ) = 636 miles/hour

Relative velocity when jet travels with wind is: X + Y = ( 3184 / 4 ) = 796 miles/hour

By adding these two equations we will get

2 X = 1432 or X = 716 miles /hour and

or, Y = 796 - 716 = 80 miles/hour

Hence,

Rate of the Jet in still Air is 716 miles per hour and

Wind speed is 80 miles/hour.

To know more about speed refer to:

https://brainly.com/question/24872445

#SPJ4

A) Given that all people work at the same steady rate and 6 people stuff flyers in 5 minutes, then 12 (=2*6) people will need 2.5 (=5/2) minutes, 30 (=5*6) people will need 1 (=5/5) minutes, etc. Then, the relationship is inverse.

The formula that relates the variables is:

people = k/time

Replacing with people = 6 and time = 5, we get.

6 = k/5

6*5 = k

k = 30

For 5 people:

5 = 30/time

time = 30/5

time = 6 minutes

people | time

5 | 6

6 | 5

12 | 2.5

30 | 1

The amount of concrete needed to make the stairs for a house plan depends on various factors, such as the size and shape of the stairs, the thickness of the concrete, and the depth and width of the steps.



- The first step in calculating the amount of concrete needed for the stairs is to determine the size and shape of the stairs. This includes the height, length, and width of the stairs, as well as the number of steps required.

- The thickness of the concrete is also an important factor in determining the amount of concrete needed. Typically, the thickness of concrete stairs ranges from 4 to 6 inches, but this may vary depending on the weight they will be supporting and the local building codes.

- The depth and width of the steps also affect the amount of concrete needed. The standard depth for a step is around 10 inches, while the width ranges from 36 to 48 inches. However, these measurements can be adjusted according to the needs and preferences of the homeowner.

- Once all of these factors are determined, the amount of concrete needed can be calculated using a formula that takes into account the volume of the stairs. The formula is: volume = height x length x width.

- For example, if the stairs are 4 feet high, 10 feet long, and 3 feet wide, the volume of concrete needed would be: 4 x 10 x 3 = 120 cubic feet.

- It is important to note that this is just an estimate, and the actual amount of concrete needed may vary depending on other factors such as the type of concrete mix used, the weather conditions during pouring, and the expertise of the contractor.

Long answer: The amount of concrete needed to make the stairs for a house plan can vary depending on several factors. The first factor to consider is the size and shape of the stairs. The size of the stairs is determined by the height, length, and width of the stairs, as well as the number of steps required. The shape of the stairs can also vary, from straight flights to curved or spiral designs.

Another important factor to consider is the thickness of the concrete. The thickness of concrete stairs ranges from 4 to 6 inches, but this may vary depending on the weight they will be supporting and the local building codes. Thicker stairs are typically required for heavier loads or for areas with high foot traffic.

The depth and width of the steps are also important factors to consider when calculating the amount of concrete needed. The standard depth for a step is around 10 inches, while the width ranges from 36 to 48 inches. However, these measurements can be adjusted according to the needs and preferences of the homeowner.

Once all of these factors are determined, the amount of concrete needed can be calculated using a formula that takes into account the volume of the stairs. The formula is: volume = height x length x width.

For example, if the stairs are 4 feet high, 10 feet long, and 3 feet wide, the volume of concrete needed would be: 4 x 10 x 3 = 120 cubic feet. This calculation assumes that the stairs are straight and have a uniform width and depth. If the stairs are curved or have irregular dimensions, the amount of concrete needed will be different.

It is important to note that this is just an estimate, and the actual amount of concrete needed may vary depending on other factors such as the type of concrete mix used, the weather conditions during pouring, and the expertise of the contractor.

To know more about dimension visit:

brainly.com/question/865246

#SPJ11

Answer:

the last choice

Step-by-step explanation:

i mean, you judt gotta find the points of the letters.

you can first find the coordinates of point A, which is 3, 2

based off of that, the rest of the answer choices don't have A as 3, 2.

so, with Process of Elimination, its the last one.

Answer:

do you know how to calculate c

Step-by-step explanation:

The coefficient of determination (R²) for the given regression model is 0.974

The coefficient of determination, R², is a measure of how well the regression line fits the data. It represents the proportion of the total variation in the dependent variable that is explained by the independent variables in the regression model.

To compute R², we first need to calculate the sum of squares total (SST), which is the total variation in the dependent variable

SST = ∑(yi - y)²

where yi is the ith observed value of the dependent variable, and y is the mean of the dependent variable.

In this case, SST = 1805, as given.

Next, we need to calculate the sum of squares regression (SSR), which represents the variation in the dependent variable that is explained by the independent variables

SSR = ∑(yi - y)²

where yi is the ith observed value of the dependent variable, and y is the predicted value of the dependent variable based on the regression model.

In this case, SSR = 1760, as given.

Finally, we can compute R² as

R² = SSR/SST

Substituting the values given, we get:

R² = 1760/1805

R² = 0.974

Learn more about coefficient of determination here

brainly.com/question/28975079

#SPJ4

The given question is incomplete, the complete question is:

The following estimated regression equation based on 30 observations was presented. y = 17.6 + 3.8x₁ – 2.3x₂ + 7.6x₃ + 2.7x₄ The values of SST and SSR are 1805 and 1760, respectively.

Compute R²

Jessica purchased a DVD that was on sale for 12% off.

The sales tax in her county is 3%.

Let, y represent the original price of the DVD.

We can simply solve this mathematical problem by using the following mathematical process.

Here, we will form an algebraic expression, according to the given data.

So,

The original price of the DVD = y

Discount on the original price :

y * 12/100

=3y/25

Price after discount :

y - 3y/25

=25y - 3y/25

=22y/25

Sales tax amount :

22y/25 * 3/100

11y/25 * 3/50

=33y/1250

Final price including the sales tax :

22y/25 + 33y/1250

1100y + 33y/1250

1133y/1250

(This will be considered as the final result.)

Learn more about sales tax here:https://brainly.com/question/9437038

#SPJ4

Answer:

- 20x/3

Step-by-step explanation:

I hope that helps :)

Answer: It is 35

Step-by-step explanation: if you go over to the 5 days and go up you will see a dot now if you go all the way to the left on the same middle the dot is on it will land on 35

The probability of choosing a black card for the second card drawn, if the first card, drawn without replacement, was a diamond is 26/51.

We are given that two cards are drawn without replacement from a standard deck of 5252 playing cards. We need to find the probability of choosing a black card for the second card drawn, if the first card, drawn without replacement, was a diamond.

So, let us first find the probability of drawing a diamond card from a deck of 52 cards:4/52 = 1/13 (There are 4 diamond cards in a deck of 52 cards)

Now, if we draw a diamond card in the first draw, there will be 51 cards left in the deck of which 26 are black. Therefore, the probability of drawing a black card after drawing a diamond card is:26/51

Therefore, the probability of choosing a black card for the second card drawn, if the first card, drawn without replacement, was a diamond is 26/51.

Summary:Two cards are drawn without replacement from a standard deck of 52 playing cards. The probability of choosing a black card for the second card drawn, if the first card, drawn without replacement, was a diamond is 26/51.

Learn more about probability click here:

https://brainly.com/question/13604758

#SPJ11

The fraction of KM that is required to obtain 20% Vmax is [S] = 0.2 KM.

The Michaelis-Menten equation is given by: V = Vmax[S] / (KM + [S])where, V is the velocity of the reaction, Vmax is the maximum velocity of the reaction,[S] is the substrate concentration, and KM is the Michaelis constant of the enzyme.

Substituting V = 0.2V

max and rearranging the equation,

0.2Vmax = Vmax[S] / (KM + [S])

Multiplying both sides by

(KM + [S]),0.2V

max(KM + [S]) = Vmax[S]

Expanding the equation,

0.2VmaxKM + 0.2Vmax[S]

= Vmax[S]0.2VmaxKM

= 0.8Vmax[S]

Dividing both sides by

Vmax,0.2KM = 0.8[S]

Simplifying the equation,

[S] = 0.2 KM / 0.8[S] = 0.25 KM

Therefore, the fraction of KM that is required to obtain 20% Vmax is [S] = 0.2 KM, which is option (a).

Learn more about velocity from:

https://brainly.com/question/80295

#SPJ11

The formula for compound interest is:

A = P(1 + r/n)^(nt)

Where:

A = the final amount

P = the principal amount

r = the annual interest rate (as a decimal)

n = the number of times the interest is compounded per year

t = the number of years

Using this formula, we can calculate the compound interest on $5000.00 for 2 years at 10% per annum:

A = 5000(1 + 0.10/1)^(1*2)

A = 5000(1.1)^2

A = 5000(1.21)

A = $6050.00

Therefore, the compound interest on $5000.00 for 2 years at 10% per annum is $1050.00 ($6050.00 - $5000.00).

Answer:

in right angled triangle ABC

by using Pythagoras law

h²=p²+b²

x²=7²+10²

x=√149=12.21cm

Answer:

x

+

1

Step-by-step explanation:

Answer:

= x + 1

Step-by-step explanation:

Answer:

I think its 7008 sq. ft.

Step-by-step explanation:

basically, lateral area is the area of all the sides in the 3D shape.

find the area of one of the sides (triangle), which would be 1/2 * 48 * 73 = 1752. It is a square pyramid, meaning there are four sides, so multiply 1752 by 4 and get 7008.

Answer:

1,654.6 square feet

Step-by-step explanation:

a^2 + b^2 = c^2

24^2 + h^2 = 73^2

h = sqrt (539-576) = 68.9

A = (b * h)/2

(48 * 68.9)/ = 1,654.6 ft^2

Answer:

60

Step-by-step explanation:

400-160=240

240/4=60

The correct answer is: making it harder to reject H0.

By selecting a smaller alpha level (significance level), the researcher is increasing the threshold for rejecting the null hypothesis (H0). This means that stronger evidence is required to reject H0 and conclude that there is a significant treatment effect or difference. A smaller alpha level makes it harder to reject the null hypothesis because it reduces the chance of making a Type I error (incorrectly rejecting H0 when it is true). Type I error is the risk of concluding there is a significant effect or difference when there is none in the population. Therefore, selecting a smaller alpha level improves the ability to control the risk of Type I error, but it also makes it more difficult to detect a treatment effect.

Learn more about Risk type error here:

https://brainly.com/question/32667111

#SPJ11

If you make annual payments of $1400 for 8 years at a 6% interest rate compounded annually, the total amount accumulated over the 8-year period would be approximately $12,350.

To explain further, when you make annual payments of $1400 for 8 years, you are essentially depositing $1400 into an account each year. The interest rate of 6% compounded annually means that the interest is added to the account balance once a year.

To calculate the total amount accumulated, you can use the formula for the future value of an ordinary annuity:

FV = P * ((1 + r)^n - 1) / r

where FV is the future value, P is the payment amount, r is the interest rate per compounding period (in this case, 6% or 0.06), and n is the number of compounding periods (in this case, 8 years).

Plugging in the values, we have:

FV = $1400 * ((1 + 0.06)^8 - 1) / 0.06

≈ $12,350

Therefore, the total amount accumulated over the 8-year period would be approximately $12,350.

To learn more about interest rate click here, brainly.com/question/28272078

#SPJ11

Answer:

4,-4 I think

Step-by-step explanation:

My brain is off right now so might be wrong

Answer:

thats a crazy question

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Brainlyyyyyy Crown

Answer:

Let's denote the horizontal distance of the support beam from the bottom of the ladder as "x" meters.

According to the given information, the ladder is resting against a vertical wall that is 1.8m high, and the support beam is placed 0.6m away from the wall. The length of the support beam is 0.6m.

We can use similar triangles to solve for "x". The triangles formed by the ladder, the support beam, and the vertical wall are similar triangles.

The height of the vertical wall (1.8m) corresponds to the length of the ladder along the wall, and the horizontal distance from the wall to the support beam (0.6m) corresponds to "x" meters on the ladder.

Using the concept of similar triangles, we can set up the following proportion:

(Height of wall) / (Horizontal distance from wall to support beam) = (Length of ladder) / (Distance from bottom of ladder to support beam)

Plugging in the given values:

1.8 / 0.6 = (Length of ladder) / x

Simplifying the proportion:

3 = (Length of ladder) / x

To find the length of the ladder, we can use the Pythagorean theorem, which states that the square of the hypotenuse (ladder) is equal to the sum of the squares of the other two sides (height of wall and horizontal distance from wall to support beam).

Length of ladder = √(height of wall)^2 + (horizontal distance from wall to support beam)^2

Length of ladder = √(1.8)^2 + (0.6)^2

Length of ladder = √3.24 + 0.36

Length of ladder = √3.6

Length of ladder ≈ 1.897 m (rounded to three decimal places)

Plugging this value back into the proportion:

3 = 1.897 / x

Solving for "x":

x = 1.897 / 3

x ≈ 0.632 m (rounded to three decimal places)

So, the horizontal distance of the support beam from the bottom of the ladder is approximately 0.632 meters.

Therefore , the solution of the given problem of equation comes out to be it mean that you owe 36 amount of money to bank.

When the equals sign (=) is used to denote equality, an algebraic theorem resembles a rule joining two statements. An algebraic equation is a factual assertion that shows the equivalence of multiple numerical variables. The values ob d + 6 and 12 are separated by an equal sign in the calculation data logger + 6 = 12. The number of syllables that correspond to each side of each letter can be expressed numerically. The message of a symbol is frequently its complete opposite.

Here,

Given :

After a few weeks, you create and calculate an equation

so determine how much money is in your bank account.

M equals -36, as you discover.

Thus,

It mean that you owe 36 amount of money to bank.

Therefore , the solution of the given problem of equation comes out to be it mean that you owe 36 amount of money to bank.

To know more about equation visit:

https://brainly.com/question/649785

#SPJ4

The 90% confidence interval for the difference in the population means is -2.51 to 0.31

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

xˉ₁ = −17.1

s₁² = 8.4

n₁ = 22

​xˉ₂ = −16.0

s₂² = 8.7

n₂ = 24

Calculate the pooled variance using

P = (df₁ * s₁² + df₂ * s₂²)/df

Where

df₁ = 22 - 1 = 21

df₂ = 24 - 1 = 23

df = 22 + 24 - 2 = 44

So, we have

P = (21 * 8.4 + 23 * 8.7)/44

P = 8.56

Also, we have the standard error to be

SE = √(P/n₁ + P/n₂)

So, we have

SE = √(8.56/22 + 8.56/24)

SE = 0.86

The z score at 90% CI is 1.645, and the CI is calculated as

CI =  (x₁ - x₂) ± z * SE

So, we have

CI = (-17.1 + 16.0) ± 1.645 * 0.86

This gives

CI = -1.1 ± 1.41

Expand and evaluate

CI = (-2.51, 0.31)

Hence, the confidence interval is -2.51 to 0.31

Read more about confidence interval at

https://brainly.com/question/15712887

#SPJ1

The probability that after this process the contents of the two bags are the same is 1/30 or approximately 0.0333.

Without loss of generality, we can assume that Alice selects a ball from her bag and puts it into Bob's bag first.

At the start, there are a total of 5 balls in each bag, so the probability of Bob selecting the same ball that Alice put into his bag is 1/5. After this exchange, each bag now contains 6 balls.

Now, Alice randomly selects a ball from her bag, which has 6 balls in total. The probability of Alice selecting the same ball that Bob put into her bag is also 1/6.

To find the overall probability, we multiply the probabilities of both events occurring:

Probability = (1/5) \(\times\)(1/6) = 1/30.

Therefore, the probability that after this process the contents of the two bags are the same is 1/30 or approximately 0.0333.

For more such answers on Probability

https://brainly.com/question/251701

#SPJ8

Answer: 31°.

Step-by-step explanation: All interior angles for a triangle should add up to 180°.

46° + 103° = 149°

To make 180°, we have to add another 31°, which is the third angle measurement. This is for the interior angles of a triangle.

Have a great day! :)

Answer:

31°

Step-by-step explanation:

In every triangle, the result of all three angles together has to be 180°.

So, 46+103= 149

180-149 = 31

Answer:

By adding

please mark me brainliest

Answer:

14

Step-by-step explanation:

Let's find (f-g)(x)

\(3x^{2} + 1 - (1-x)\\3x^{2} + 1 -1 + x\\3x^{2} + x\)

Now let's plug in x=2, so to find (f-g)(2)

\(3(2)^{2} + 2\\12 + 2 = 14\)

Answer:

let me try

Step-by-step explanation: