Can anyone pls help me with this question?

In order to calculate the time it will take for Andrew to settle the loan, we can use the formula for compound interest. So, it will take Andrew approximately 5.22 years to settle the loan.

The formula is given as A = P(1 + r/n)^(nt), Where: A = the final amount, P = the principal (initial amount borrowed), R = the annual interest rate, N = the number of times the interest is compounded in a year, T = the time in years.

We know that Andrew borrowed R200 000 from a bank at an annual interest rate of 5.25% compounded quarterly and that he will make repayments of R6 000 at the end of every 3 months.

Since the first repayment will be made 3 months from now, we can consider that the initial loan repayment is made at time t = 0. This means that we need to calculate the value of t when the total amount repaid is equal to the initial amount borrowed.

Using the formula for compound interest: A = P(1 + r/n)^(nt), We can calculate the quarterly interest rate:r = (5.25/100)/4 = 0.013125We also know that the quarterly repayment amount is R6 000, so the amount borrowed minus the first repayment is the present value of the loan: P = R200 000 - R6 000 = R194 000

We can now substitute these values into the formula and solve for t: R194 000(1 + 0.013125/4)^(4t) = R200 000(1 + 0.013125/4)^(4t-1) + R6 000(1 + 0.013125/4)^(4t-2) + R6 000(1 + 0.013125/4)^(4t-3) + R6 000(1 + 0.013125/4)^(4t)

Rearranging the terms gives us: R194 000(1 + 0.013125/4)^(4t) - R6 000(1 + 0.013125/4)^(4t-1) - R6 000(1 + 0.013125/4)^(4t-2) - R6 000(1 + 0.013125/4)^(4t-3) - R200 000(1 + 0.013125/4)^(4t) = 0

Using trial and error, we can solve this equation to find that t = 5.22 years (rounded to 2 decimal places). Therefore, it will take Andrew approximately 5.22 years to settle the loan.

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Step-by-step explanation:

1.

how many glasses of 0.32 liter can she fill ?

that means, how often does 0.32 fit into 1.45 ?

that is solved by division :

1.45 / 0.32 = 4.53125

so, she will need at least 5 glasses to completely empty the bottle. the 5th glass will be filled only partly, but that does not matter in that regard.

2.

he has 5.6 kg and adds 2.5 kg. that is 5.6 + 2.5 = 8.1 kg.

1 dough (that means 1 portion of dough as described by his recipe) uses 0.48 kg flour.

how many doughs can he make

so, again, how often does 0.48 fit into 8.1 ?

8.1 / 0.48 = 16.875

he can therefore make 16 full portions of dough. he does not have enough flour for a full 17th.

so, he uses

16×0.48 = 7.68 kg of flour for the 16 doughs.

and he has

8.1 - 7.68 = 0.42 kg of flour left.

Answer:

u = -24/7

Step-by-step explanation:

u = 6 = u

v      -7     4

-7u = 24

u = -24/7

Answer:

u = - \(\frac{24}{7}\)

Step-by-step explanation:

Given that u varies directly with v then the equation relating them is

u = kv ← k is the constant of variation

To find k use the condition u = 6 when v = - 7, then

6 = - 7k ( divide both sides by - 7 )

- \(\frac{6}{7}\) = k

u = - \(\frac{6}{7}\) v ← equation of variation

When v = 4 , then

u = - \(\frac{6}{7}\) × 4 = - \(\frac{24}{7}\)

Answer:

A= 130

B= 25

Step-by-step explanation:

A is 130 because the amount of degrees that are in a triangle is 180 degrees. From that we can substract 25 from 180 and get 155.

Since B is congruent with 25, B is also 25 degrees. Therefore, A is 130 because 180 - 50 is 130.

Hope this helps.

\(\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{7\% of 47}}{\left( \cfrac{7}{100} \right)47}\implies 3.29\)

From the bar graph given, the following can be deduced from inspection.

From the above, pirate books are more than insect books by;

Therefore, pirate books in the library are more than insect books by 60 books.

Short answer, 7.2 liters. hope this helped

The requried Seven hundred twenty centiliters is equal to 7.2 liters.

Unit of measurement is defined as every entity having its measures in dimensions, weight, and time. Such as for length we have a meter, for liquid we have liters, and so on.

Here,
To convert from centiliters (cL) to liters (L), we need to divide the number of centiliters by 100, since there are 100 centiliters in a liter.

Therefore, to convert 720 centiliters to liters, we divide 720 by 100:

720 cL ÷ 100 = 7.2 L

So 720 centiliters is equal to 7.2 liters.

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The critical value using a significance level of 0.01 is equal to 2.797.

According to the question, the total number of observations is given by the formula

Total number of observations = n₁ + n₂, Also, n₁ = 13 and n₂ = 13 so

Total number of observations = 13+13 = 26

We know that the Degree of freedom is equal to two less than the total number of observations that is

26 - 2 = 24

=> Degree of Freedom = 24

If we use the t-distribution table, the critical value which is corresponding to 24 degrees of freedom and 0.01 significance level is equal to 2.797

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Complete Question:

An operations manager with General Motors corporate offices wishes to determine if the true mean productivity of employees at its Detroit, Michigan plant is different from its Opel/Vauxhall Plant in Bochum, Germany. For this analysis, productivity will be measured by the number of cars that employees assemble per day. Random samples of employees in Detroit and Bochum are selected, and the productivity scores at each assembly plant are recorded. The following results are obtained.

t-Test: Two-Sample Assuming Equal Variances

Detroit

Bochum

Mean

58.5

54.3

Variance

42

56

Observations

13

13

Pooled Variance

XX

Hypothesized Mean Difference

0

df

XX

t Stat

XXXXX

P(T<=t) one-tail

XXXXX

t Critical one-tail

XXXXX

P(T<=t) two-tail

XXXXX

t Critical two-tail

XXXXX

Using a significance level of 0.01, the critical value of the appropriate test statistic to conduct the test of hypothesis for the belief that there is a difference in the mean productivity is:

Answer:

m = -2/3

Step-by-step explanation:

Slope Formula: \(m=\frac{y_2-y_1}{x_2-x_1}\)

Simply plug in our coordinates into the formula:

m = (3 - 7)/(3 + 3)

m = -4/6

m = -2/3

Answer:

-2/3

Step-by-step explanation:

In order to find the slope, we need to find the change in y over change in x

For y: 7-3=4

For x: -3-3=-6

4/-6

We can simplify it into 2/-3

Answer:

y = f(x) = a + bx

Step-by-step explanation:

Step-by-step explanation: A linear function is a function of the form f(x) = ax + b, where a and b are real numbers. Here, a represents the gradient of the line, and b represents the y-axis intercept (which is sometimes called the vertical intercept).

3√20+2√125 = 3√(4×5) + 2√(5×5×5)

=6√5+10√5

=16√5

This is your answer .

(a) The total work done in stretching the 450 mm-long sheet with a cross-sectional area of 320 mm² until θ = 22° is approximately 6.84 kJ.

(b) The maximum stress before necking begins is approximately 397.89 MPa.

(a) To find the total work done, we need to integrate the area under the stress-strain curve.

Given: Length of the sheet (L) = 450 mm Cross-sectional area (A) = 320 mm² True-stress-true-strain curve equation: σ = 750 × ε^0.35

To calculate the work done, we can use the equation: Work = ∫σ dε

First, we need to find the limits of integration for strain (ε). Since the material is stretched until θ = 22°, we can convert this angle to strain using the equation: ε = tan(θ)

Therefore, ε = tan(22°) ≈ 0.404

Next, we can calculate the work done by integrating the stress-strain equation over the strain range: Work = ∫σ dε = ∫(750 × ε^0.35) dε

Evaluating the integral, we get: Work = [(750/0.86) × (ε^1.35)] | from 0 to 0.404 ≈ (750/0.86) × [(0.404)^1.35 - 0] ≈ 6.84 kJ

Therefore, the total work done is approximately 6.84 kJ.

(b) The maximum stress before necking begins can be determined by finding the stress corresponding to the strain value at necking.

Given the true-stress-true-strain curve equation, we can substitute the strain value at necking into the equation to find the corresponding stress: ε_necking = 0.404

σ_necking = 750 × (ε_necking)^0.35 ≈ 397.89 MPa

Therefore, the maximum stress before necking begins is approximately 397.89 MPa.

(a) The total work done in stretching the 450 mm-long sheet with a cross-sectional area of 320 mm² until θ = 22° is approximately 6.84 kJ.

(b) The maximum stress before necking begins is approximately 397.89 MPa.

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Answer:

3.33 m/s

Step-by-step explanation:

speed = \(\frac{meters}{seconds} > \frac{20}{6} = 3.33\)

Answer:

\(\frac{3}{4}\) = the slope

Step-by-step explanation:

you have a slope formula to do this problem and you need to learn how to use it.  Watch me.

\(m = \frac{y_{2 - y_{1} } }{x_{2} - x_{1} }\)

m = \(\frac{-12 - (-18)}{-2 - (-10)}\)

   = \(\frac{-12 + 18}{-2 + 10}\)

   =  \(\frac{6}{8}\)

   = \(\frac{3}{4}\)

By finding the vertical and horizontal asymptotes, you can use them to help find an expression for the rational function

To find an expression for a rational function given a vertical asymptote and a horizontal asymptote, start by recognizing that the general form of a rational function is f(x) = (ax + b)/(cx + d), where a, b, c, and d are all constants.

Next, use the given information to solve for a, b, c, and d in the equation. The vertical asymptote represents the x-values at which the denominator of the equation equals zero, so set cx + d equal to zero and solve for x. Similarly, the horizontal asymptote can be found by setting ax + b equal to the asymptote’s y-value.

Once both equations are solved for x, substitute the x-values back into the equation for the rational function and solve for the corresponding a, b, c, and d values.

A vertical asymptote occurs when the denominator of the rational function is equal to zero, so you can set the denominator equal to zero and solve for the variable to find the vertical asymptote.

A horizontal asymptote occurs when the degree of the numerator and denominator are equal, so you can look at the leading coefficients of the numerator and denominator to find the horizontal asymptote.

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Answer:

y = -22/5

Step-by-step explanation:

-3+7y=5x+2y

Subtract 2y from each side

-3+7y-2y=5x+2y-2y

-3 +5y = 5x

Add 5 to each side

5y = 5x+3

Divide each side by 5

y = 5x/5 +3/5

y = x +3/5

Let x = -5

y = -5 + 3/5

y = -25/5 +3/5

y = -22/5

Answer:

\(y=-\frac{22}{5}\)

Step-by-step explanation:

\(-3+7y=5x+2y\\x=-5\)

Replace:

\(-3+7y=5(-5)+2y\\-3+7y=-25+2y\)

Subtract -2y

\(-3+7y-2y=-25\)

Add 3

\(7y-2y=-25+3\)

Combine like terms;

\(5y=-22\)

Divide by 5.

\(y=-\frac{22}{5}\)

Proof

\(For x=-5, y=-\frac{22}{5}\)

\(-3+7y=5x+2y\)

\(-3+7(-\frac{22}{5} )=5(-5)+2(-\frac{22}{5} )\)

\(-3-\frac{154}{5}=-25-\frac{44}{5}\)

To make it easier to solve, add 154/5

\(-3=-25-\frac{44}{5}+\frac{154}{5}\)

Now add 25

\(-3+25=-\frac{44}{5}+\frac{154}{5}\)

Combine like terms;

\(22=\frac{110}{5} \\22=22\)

The blocks in this design are c. the four different litters. The pigs within each litter were grouped together as a block, and the three dietary supplements were randomly assigned to the two pigs within each block.

This helps control for any variation between litters that could affect the results of the feed trial. The 24 identical pens are not the blocks in this design, but rather the units where the treatments were applied.

A litter is defined as the live birth of several young at once in an animal from the same mother and typically from the same pair of parents, especially three to eight young. The term is most frequently used to refer to the offspring of mammals, although it can also refer to any animal that bears numerous offspring.

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Answer:

Step-by-step explanation:

To find the missing numbers, we must simplify the second half of the original proportion/fraction. Let's use number 2 as an example. First, we need to find out which number we are using to simplify. To do this, we divide 21 by 7. This gives us 3. Now, we divide 12 by 3 to get y, or 4. This strategy can be applied to all the problems.

1. The payment amount and the interest on the loan, we need to use the formula for calculating compound interest. The formula is: A = P(1 + r)^n

Where:
A is the total amount after n years,
P is the principal amount (loan amount),
r is the interest rate per period (in this case, 10% per year),
n is the number of periods (in this case, 2 years).

(a) To find the amount of the payment, we need to calculate the total amount (A) and subtract the principal amount (P):

A = P(1 + r)^n
A = $1,600,000(1 + 0.10)^2
A = $1,600,000(1.10)^2
A = $1,600,000(1.21)
A = $1,936,000

Payment amount = A - P = $1,936,000 - $1,600,000 = $336,000

(b) To find the amount of interest, we subtract the principal amount from the total amount:

Interest = A - P = $1,936,000 - $1,600,000 = $336,000

Therefore, the amount of the payment is $336,000 and the amount of interest is also $336,000.

2. To find the interest rate, we can use the formula for compound interest:

A = P(1 + r)^n

Where:
A is the future amount ($2.42 million),
P is the present amount ($2 million),
r is the interest rate per period (unknown),
n is the number of periods (1 year).

We can rearrange the formula to solve for r:

r = (A/P)^(1/n) - 1
r = ($2.42 million / $2 million)^(1/1) - 1
r = 1.21 - 1
r = 0.21

Therefore, the interest rate is 21%.

3. To find the original loan amount, we can use the formula for calculating the future amount with compound interest:

A = P(1 + r)^n

Where:
A is the total cost of repaying the loan ($82 million),
P is the original loan amount (unknown),
r is the interest rate per period (8% per year),
n is the number of periods (1 year).

We can rearrange the formula to solve for P:

P = A / (1 + r)^n
P = $82 million / (1 + 0.08)^1
P = $82 million / 1.08
P ≈ $75.93 million

Therefore, the amount of the original loan was approximately $75.93 million.

4. To find the number of years required for the investment to reach at least $425,000, we can use the formula for compound interest:

A = P(1 + r)^n

Where:
A is the future amount ($425,000),
P is the initial investment ($280,000),
r is the interest rate per period (15% per year),
n is the number of periods (unknown).

We can rearrange the formula to solve for n:

n = log(A/P) / log(1 + r)
n = log($425,000/$280,000) / log(1 + 0.15)
n ≈ 4.61 years

Therefore, it would take approximately 4.61 years for the investment to cumulate to at least $425,000 at a 15% per year interest rate.

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Answer:

Explanation:

since this triangle is a right-angled triangle and one its angles equals 45° then it's an isosceles right triangle which means that the side opposite 45° (the side to the left) is equal to 13 too.

so according to pythagoras theorem c = √(a²+b²)

x =√(13²+13²)

x = √(169+169)

x = √338

x ≈ 18.38

note: in the question it's mentioned to find y! and I believe it is just an error! it's about to find x and that's more resonable!

Answer: Manny is making 3/2 batches, which is equivalent to 1.5, it's more than one. So, Manny is making more than 1 batch. According to the problem, 2 cups of flour in a batch, if he's making 1.5 batch, he would need 3 cups of flour, which is more than 2 cups of flour.

Step-by-step explanation:

A minimum sample size of 121 individuals needs to be surveyed, ensuring a rounded-up value to estimate the proportion of non-graduates within the 25 to 30 age group with a 10% margin of error and 90% confidence.

To determine the sample size required to estimate the proportion of non-graduates within the 25 to 30 age group with a certain level of confidence and margin of error, we can use the formula:

n = (Z^2 * p * (1 - p)) / E^2

Where:

n is the required sample size

Z is the Z-score corresponding to the desired confidence level (90% confidence corresponds to a Z-score of approximately 1.645)

p is the estimated proportion of non-graduates (0.21 based on the information provided)

E is the desired margin of error (10% or 0.10)

Substituting the values into the formula:

n = (1.645^2 * 0.21 * (1 - 0.21)) / 0.10^2

n ≈ 120.41

Rounding up to the nearest integer, the required sample size is 121.

Therefore, you would need to survey at least 121 individuals in the 25 to 30 age group to estimate the proportion of non-graduates within 10% margin of error with 90% confidence.

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Lerchs-Grossman algorithm is a pit optimization software that helps in the determination of the most profitable final pit outline. The section of a copper porphyry ore body given has a cut-off grade of 0.45% Cu. Each block has dimensions of 16m x 16m x 16m (HxLxW).

The cost of mining a block of waste is $50, and the value of a block of ore is approximated to be $100 x (grade expressed in %). Firstly, we have to calculate the net present value (NPV) for all the blocks that are above the cut-off grade. NPV is calculated using the formula given below:

NPV = ((grade*100)*100)-50

Here, the cost of mining a block of waste is $50 and the value of a block of ore is approximated to be $100 x (grade expressed in %).

1. Firstly, the net present value (NPV) of each block above the cutoff grade is calculated.2. The blocks are then sorted in descending order of their NPVs.

3. Next, the algorithm calculates the limits of the pit at a sequence of levels, starting with the block of highest NPV.

4. It is assumed that the pit will extend downwards through the blocks from the highest NPV downwards.

5. If the pit reaches the edge of the ore body before reaching a certain level, it is truncated and the lower level is tried.

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Writing linear equations given two points can be a useful skill when graphing linear equations.

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Put this on a graph (I recommend putting the coordinates into desmos for easy graphing)

0 hours: (0, 0)

1 hours: (1, 7)

2 hours: (2, 14)

3 hours: (3, 21)

4 hours: (4, 28)

5 hours: (5, 35)

6 hours: (6, 42)

6.5 hours: (6.5, 45.5)

After 6.5 hours the lava would have travelled approximately 45.5 miles

I hope this helps you!

Answer:

$25

Step-by-step explanation:

Let the original cost of the shirt be x, therefore the sale price would be the original minus the 20% of the original price x - 0.20x = $20. Solve for x: 0.8x = 20 --> x=$25

Darwin's geometric ratio of increase pertains specifically to the growth rate of populations in biological organisms. According to Darwin's theory of evolution, populations have the potential to increase exponentially over time if certain conditions are met. The geometric ratio of increase, often denoted as "r" or the intrinsic rate of natural increase, represents the factor by which a population multiplies during each reproductive cycle or generation.

In the context of natural selection, individuals with higher reproductive rates (higher r-values) have a greater chance of passing on their genetic traits to the next generation. Over time, this can lead to significant population growth and evolutionary changes within a species. However, the geometric ratio of increase is limited by various factors, such as availability of resources, competition, predation, and environmental constraints, which can result in a balance between population growth and environmental carrying capacity.

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Answer:

x = 1, y = 6

Step-by-step explanation:

y = 6x

2x + 3y = 20

Plug y as 6x in the second equation and solve for x.

2x + 3(6x) = 20

2x + 18x = 20

20x = 20

\(\frac{20x}{20}= \frac{20}{20}\)

x = 1

Plug x as 1 in the first equation and solve for y.

y = 6(1)

y = 6

Answer:

y=6 , x=1

Step-by-step explanation:

y=6x

2x+3y=20

Substitute 6x into y because y=6x.

2x+3(6x)=20

2x+18x=20

20x=20

x=1

Then subsitiute 1 into the first equation in x value

y=6(1)

y=6