MATH QUESTION HELP ME PLS, KINDA URGENT!!

I need to resolve this with the elimination method

x +y +z = 13
x–z = −2
−2x +y = 3

how-?

Answer:

It is (9,-3) because x increased by 1 unit and y increased by 4 units.

Answer:

\((9,-3)\)

Step-by-step explanation:

\((8,-7)\)

If it moves right, add the value to the x-coordinate. If it moves left, subtract the value from the x-coordinate. In this case, because the point was translated 1 unit right, we add 1 to the x-coordinate 8.

\((9,-7)\)

If it moves up, add the value to the y-coordinate. If it moves down, subtract the value from the y-coordinate. In this case, because the point was translated 4 units up, we add 4 to the y-coordinate.

\((9,-3)\)

I hope this helps!

Answer:

discounted price = original price ( 1 - discount rate)

Step-by-step explanation:

The required confidence interval is,

⇒ CI = (0.628, 0.797)

According to the given information,

We can use a formula to calculate the confidence interval,

⇒ CI = p ± z  (√(p(1-p)/n))

Where,

p = sample proportion = 67/94 = 0.7128

z = z-score corresponding to a 90% confidence level = 1.645 (you can find this value on a z-table)

n = sample size = 94

So put the values, we get,

⇒ CI = 0.7128 ± 1.645 (√((0.7128 (1 - 0.7128))/94))

Simplifying this formula, we can get,

⇒ CI = 0.7128 ± 0.0846

Therefore, the 90% confidence interval for the true proportion of all adults in the town who have health insurance is,

⇒ CI = (0.6282, 0.7974)

In Interval Notation with decimal rounded to the thousandths,

⇒ CI = (0.628, 0.797)

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Answer: If a person has a better credit, they have better chances of getting the job they had applied for. Getting the job means they get a stable income. Having a stable income helps a person to buy all essential needs.

Step-by-step explanation:

a) The rate of people leaving the health club, L(t), can be calculated as:

L(11) = 0.013(11)^2 - 0.25(11) + 8

b) To find the number of people, we integrate the net rate of change over the time interval:

Number of People at t=20 = Integral of (E(t) - L(t)) dt, from t=0 to t=20

c) This can be done by finding the critical points of the net rate of change and evaluating them to determine whether they correspond to maximum or minimum values.

To determine whether the number of people in the facility is increasing or decreasing at time t=11, we need to compare the rates of people entering and leaving the health club at that time.

a) At time t=11 hours:

The rate of people entering the health club, E(t), can be calculated as:

E(11) = -0.018(11)^2 + 11

Similarly, the rate of people leaving the health club, L(t), can be calculated as:

L(11) = 0.013(11)^2 - 0.25(11) + 8

By comparing the rates of people entering and leaving, we can determine if the number of people in the facility is increasing or decreasing. If E(t) is greater than L(t), the number of people is increasing; otherwise, it is decreasing.

b) To find the number of people in the health club at time t=20, we need to integrate the net rate of change of people over the time interval 0≤t≤20 hours.

The net rate of change of people can be calculated as:

Net Rate = E(t) - L(t)

To find the number of people, we integrate the net rate of change over the time interval:

Number of People at t=20 = Integral of (E(t) - L(t)) dt, from t=0 to t=20

c) To determine the time t at which the number of people in the health club is a maximum, we need to find the maximum value of the number of people over the interval 0≤t≤20.

This can be done by finding the critical points of the net rate of change and evaluating them to determine whether they correspond to maximum or minimum values.

Let's calculate these values and solve the problem.

Note: Since the calculations involve a series of mathematical steps, it would be best to perform them offline or using appropriate computational tools.

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The stem and leaf for the data values is

0       | 3   8

1        | 2  2   4

2       | 0  1   3  6

3       | 4

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

Data values:

3 8 12 12 14 20 21 23 26 34

Sort in order of tens

So, we have

3 8

12 12 14

20 21 23 26

34

Next, we draw the stem and leaf as follows:

a | b

Where

a = stem and b = leave

number = ab

Using the above as a guide, we have the following:

0       | 3   8

1        | 2  2   4

2       | 0  1   3  6

3       | 4

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a) The critical value 90% is 1.833

b) The critical value for 98% is 2.528

c) The critical value of 90% is 1.645

d) 3.169 is the critical value of 99%.

The critical probability (p*) = 1 - (α / 2), where α equals 1 - (confidence level / 100).

Given that an independent random sample is drawn from a population with an essentially normal standard deviation.

To calculate the degrees of freedom and crucial t-value for a given sample size and confidence level.

n-1 degrees of freedom

Critical t can be obtained from the internet's t table.

a) degree of liberty = 5

The critical 90% is 1.833

b) degree of freedom is 20.

The critical value for 98% is 2.528

c) degree of freedom =28

The critical value of 90% is 1.645

d) degree of freedom =10.

3.169 is the critical value of 99%.

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Select all the correct locations on the graph. At which points are the equations y = x2 + 3x + 2 and y = 2x + 3 approximately equal? 2.

Answer:

The equations are approximately equals at the points (0.618,4.236)(0.618,4.236) and (-1.618,-0.236)(−1.618,−0.236)

Answer:

your answer will be 4/25

Step-by-step explanation:

.....

\( \sf Q) \frac{2 {}^{2} }{ {5}^{2} } = {?} \)

\( \sf \implies \frac{2 {}^{2} }{ {5}^{2} }\)

\( \sf \implies \frac{4}{25}\)is the required answer.

The distance of the flag pole from point Y is 0.8 km and it is placed at an bearing of N40°E

An equation is an expression that shows the relationship between two or more numbers and variables.

Sine rule shows the relationship between the sides and angles of a triangle.

The triangle formed has angles A = 10°, B = 50°, C = 120°, c = 4 km, a = distance from point y.

Hence:

a / sinA = c / sinC

a / sin(10) = 4 / sin(120)

a = 0.8 km

The distance of the flag pole from point Y is 0.8 km and it is placed at an bearing of N40°E

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Answer:

\(5\frac{3}{4}\)

Step-by-step explanation:

You need to set bot denominators equal so multiply the second fraction by two for both the top and bottom.

\(2\frac{1}{4} +3\frac{1}{2} \\ =2\frac{1}{4} +3\frac{2}{4}\\\\ =5\frac{3}{4}\)

Answer:

x = 10°

Step-by-step explanation:

(3x + 88) + (x + 36) + (2x -4) = 180°

6x + 120 = 180°

6x = 60°

x = 10°

The diver collected water samples at every 3 meters, starting from 5 meters below the water surface, up to a final depth of 35 meters.

We can find the number of samples collected by dividing the total depth range by the distance between each sample and then adding 1 to include the first sample.

The total depth range is:

35 m - 5 m = 30 m

The distance between each sample is 3 m, so the number of samples is:

(30 m) / (3 m/sample) + 1 = 10 + 1 = 11

Therefore, the diver collected a total of 11 water samples.

Answer:

3/12 is equals to 1/4

I know this because 4*3=12

500TH MATH QUESTION LETS GO!!!

Hope This Helps!!!

Answer:

SA=2πrh+2πr2=2·π·12·3+2·π·122≈282.7cm2

Answer:

y = 3

Step-by-step explanation:

*As seen in the photo, the fact that EF = GF and the bisector being there makes EH = HG.

5y + 10 = 28 - y

*Add y to both sides.

6y + 10 = 28

*Subtract 10 from both sides.

6y = 18

*Divide both sides by 6.

y = 3

In triangle EFG, with angle bisector FH and equal lengths for EF and GF, the value of y is 3.

Use the concept of a triangle defined as:

A triangle is a 3-sided polygon, which has three vertices and three angles which has a sum of 180 degrees.

Given that,

Angle EFG has an angle bisector FH.

EF = GF (the lengths of the corresponding sides of triangle EFG are equal).

EH = 5y + 10 (length of segment EH).

HG = 28 - y (length of segment HG).

To find the value of y,

Start by applying the angle bisector theorem in triangle EFG.

According to the theorem,

The ratio of the lengths of the segments formed by the angle bisector to the corresponding sides should be equal.

Since EF = GF,

Set up the following equation:

EH / HG = EF / FG

Substituting the given values, we have:

\(\dfrac{(5y + 10)}{ (28 - y)} = \dfrac{1} { 1}\)

Cross-multiplying, we get:

5y + 10 = 28 - y

Combining like terms, we have:

6y = 18

Dividing both sides by 6, we find:

y = 3

Therefore, the value of y is 3.

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TRUNCATED to one decimal place, it's 50.2

ROUNDED to one decimal place, it's 50.3

The round-off of 50.272 to 1 decimal place using rules of rounding

numbers are 50.3.

Rounding off numbers means making a number simpler by adjusting it to its nearest place according to certain rules.

Rounding a number to one decimal place means keeping only the first digit after the decimal point and neglecting the rest. In this case, the digit in the second decimal place is 7, which is greater than or equal to 5. As per the rounding rules, if the digit is greater than 5, the preceding digit is increased by 1.

So, 50.272 becomes 50.3 when rounded to one decimal place.

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Answer:

Im 99% sure it is D but the graphs are hard to see

Step-by-step explanation:

This is the complement of both flips coming up heads, so the probability is 3/4. The expected value of X is -$1.

To find the expected value of the random variable X, we need to calculate the weighted average of its possible outcomes based on their probabilities.

Given:

If both flips come up heads, X = -7 (loss of $7)

If at least one flip comes up tails, X = 1 (win of $1)

Let's calculate the probabilities of each outcome:

Both flips come up heads:

The probability of getting a head on a fair coin flip is 1/2.

Since the flips are independent events, the probability of getting two heads in a row is (1/2) * (1/2) = 1/4.

At least one flip comes up tails:

This is the complement of both flips coming up heads, so the probability is 1 - 1/4 = 3/4.

Now, let's calculate the expected value of X:

E(X) = (-7) * P(X = -7) + (1) * P(X = 1)

E(X) = (-7) * (1/4) + (1) * (3/4)

= -7/4 + 3/4

= -4/4

= -1

Therefore, the expected value of X is -$1.

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The equation of the table of values is f(x) = 2x

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

The table of values

On the table of values, we can see that

The x values are multiplied by 2 to get the y values

When represented as a function. we have

f(x) = 2 * x

Evaluate the product

f(x) = 2x

Hence, the function equation is f(x) = 2x

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To answer this question, we have to substract 1/4 (which is the part of the pizza Santa ate) from 5/12 (the part of the pizza that was left over).

1/6 of the pizza was left when Santa finished eating.

Danny's belief that doubling all three dimensions would double the volume of the tool box is incorrect.A tool box has the dimensions of 8 in by 5 in by 4 in.

If Danny plans to double all three dimensions to build a larger tool box, he believes he would double the volume of the tool box. Danny is incorrect about doubling all three dimensions to build the larger tool box. If he doubles all three dimensions, the new volume will not be exactly double the volume of the original tool box.

Let's calculate the volume of the original tool box:

Volume = Length x Width x Height

Volume = 8 in x 5 in x 4 in

Volume\(= 160 in³\)

Now, if Danny doubles all three dimensions, the new dimensions would be:

Length = 2 * 8 in = 16 in

Width = 2 * 5 in = 10 in

Height = 2 * 4 in = 8 in

The volume of the larger tool box would be:

Volume = Length x Width x Height

Volume = 16 in x 10 in x 8 in

Volume \(= 1280 in³\)

Therefore, the volume of the larger tool box is not double the volume of the original tool box\((160 in³)\), but rather\(1280 in³\). So, Danny's belief that doubling all three dimensions would double the volume of the tool box is incorrect.

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The values of a, b, c, and d, based on the given equation are:

\(a = 10\\b = 3\\c = -6\\d = -5\)

Let's calculate the values of a, b, c, and d based on the given table:

Using the equation \(y = x^2 - 4x - 2\), we can substitute the values of x and find the corresponding values of y:

For x = -3:

\(y = (-3)^2 - 4(-3) - 2 = 9 + 12 - 2 = 19\)

For x = -2:

\(y = (-2)^2 - 4(-2) - 2 = 4 + 8 - 2 = 10\)

For x = -1:

\(y = (-1)^2 - 4(-1) - 2 = 1 + 4 - 2 = 3\)

For x = 0:

\(y = (0)^2 - 4(0) - 2 = 0 - 0 - 2 = -2\)

For x = 1:

\(y = (1)^2 - 4(1) - 2 = 1 - 4 - 2 = -5\)

For x = 2:

\(y = (2)^2 - 4(2) - 2 = 4 - 8 - 2 = -6\)

For x = 3:

\(y = (3)^2 - 4(3) - 2 = 9 - 12 - 2 = -5\)

Now let's match these values with the table:

\(x , y = x^2 - 4x - 2\)

\(\[\begin{align*}(-3, 19) \\(-2, a) \\(-1, b) \\(0, -2) \\(1, -5) \\(2, c) \\(3, d) \\\end{align*}\]\)

From the given table, we have:

\(a = 10\\b = 3\\c = -6\\d = -5\)

Certainly! Here's a 100-word explanation of the given data:

The data provided consists of pairs of values, where the first column represents the x-values and the second column represents the y-values. Each row in the table corresponds to a data point. For instance, when x is \(-3\), the corresponding y-value is \(19\). Similarly, when x is \(-2\), the y-value is denoted as '\(a\)', and when \(x\) is -\(1\), the \(y\)-value is denoted as 'b'.

The pattern continues for the remaining data points, with specific values assigned to \(x \ and \ y\). This data set allows for the representation and analysis of relationships between the variables \(x \ and \ y\).

Therefore, the values of a, b, c, and d are:

\(a = 10\\b = 3\\c = -6\\d = -5\)

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Distance between hive and flower bed is 2250 feet.

Distance=Speed *time

What is a hive?

A freak flies at 20 bases per alternate directly to a flower bed from its hive

so, forward speed is

canvases directly back to the hive at 12 bases per alternate

so, backward speed is

It's down from the hive for 20 twinkles total

so,

total time = forward time backward time stay time

The freak stays at the flower bed for 15 twinkles,

20 =  tb 15

Now, we can change it into seconds  we know that

distance between hive and flower bed will remain  Let's assume

forward time = x

So,

We know that

Distance = speed * time

Now, we can plug value now, we can plug values

Both distances are same

Now, we can break above equations and find x

Add both sides 12x

Now, we can find distance

So, distance between hive and flower bed is 2250feet.

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Answer:

4.25cm

Step-by-step explanation:

1cm=200m

given ridge Trail=850m

so,200m=1cm

1m=1/200cm

850m=1/200×850=4.25cm ans