Type the correct answer in each box.Use numerals instead of words. If necessary, use / for the fraction bar.
and
form a right angle at their point of intersection, B.
If the coordinates of A and B are (14, -1) and (2, 1), respectively, the y-intercept of
is
and the equation of
is y =
x +
.

If the y-coordinate of point C is 13, its x-coordinate is
.

The correct rule for reflection across the y-axis is "Ty-axis (x, y) → (-x, y)."

The rule for reflection depends on the axis of reflection. In this case, we are given the options of Ty-axis (reflection across the y-axis) and Tx-axis (reflection across the x-axis). Let's analyze each option:

Ty-axis (x, y) → (-x, y):

This rule states that for a reflection across the y-axis, the x-coordinate of a point is negated while the y-coordinate remains the same. For example, if we have a point (2, 3) and reflect it across the y-axis, it becomes (-2, 3). The x-coordinate is negated, but the y-coordinate remains the same.

Ty-axis (x, y) → (x, y):

This rule states that for a reflection across the y-axis, both the x-coordinate and y-coordinate remain the same. This means that there is no change in the coordinates of the point after the reflection.

Tx-axis (x, y) → (-x, y):

This rule states that for a reflection across the x-axis, the y-coordinate of a point remains the same while the x-coordinate is negated. For example, if we have a point (2, 3) and reflect it across the x-axis, it becomes (2, -3). The y-coordinate remains the same, but the x-coordinate is negated.

Tx-axis (x, y) → (x, y):

This rule states that for a reflection across the x-axis, both the x-coordinate and y-coordinate remain the same. This means that there is no change in the coordinates of the point after the reflection.

Based on the given options, the correct rule for the reflection is Ty-axis (x, y) → (-x, y). This means that when reflecting a point across the y-axis, the x-coordinate is negated while the y-coordinate remains the same.

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Answer:

375/100

Reduce to lowest term

15/4 or 3 3/4

So the probability of getting one head and one tail is 50%.since there are no other possible outcomes.

When we flip a coin, there are two possible outcomes: heads (H) or tails (T). Tossing a coin is a random experiment that follows a binomial distribution since each toss is independent, and there are only two possible outcomes.

We can use the binomial probability formula to find the probability of a specific event happening.Here are the answers to each part of the question:b) TT (two tails)

To calculate the probability of getting two tails in a row, we multiply the probability of getting tails on the first toss by the probability of getting tails on the second toss.

P(TT) = P(T) x P(T) = 0.5 x 0.5 = 0.25 = 25%So the probability of getting two tails in a row is 25%.c) HT and TH (one head and one tail)To calculate the probability of getting one head and one tail,

we multiply the probability of getting a head on the first toss by the probability of getting a tail on the second toss, and then add it to the probability of getting a tail on the first toss and a head on the second toss.

P(HT or TH) = P(H) x P(T) + P(T) x P(H) = 0.5 x 0.5 + 0.5 x 0.5 = 0.5 = 50%

Note that the probability of getting two heads is the same as the probability of getting two tails (25%), and the probability of getting any combination of heads and tails is 100% (1),

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The probability that exactly 20 out of 30 randomly selected adult smartphone users use their smartphones in meetings or classes is approximately 0.1031, or 10.31%.

To find the probability that exactly 20 out of 30 randomly selected adult smartphone users use their smartphones in meetings or classes, we can use the binomial probability formula.

The binomial probability formula is given by:

P(X = k) = (n C k) * p^k * (1 - p)^(n - k),

where:

P(X = k) is the probability of exactly k successes,

n is the total number of trials (number of smartphone users selected),

k is the number of successes (number of smartphone users using their smartphones in meetings or classes),

p is the probability of success in a single trial (percentage of adults using smartphones in meetings or classes), and

(n C k) represents the binomial coefficient, which can be calculated as n! / (k! * (n - k)!)

Given that the percentage of adults using smartphones in meetings or classes is 42% or 0.42, we have p = 0.42. Also, n = 30 and k =

Substituting these values into the binomial probability formula:

P(X = 20) = (30 C 20) * 0.42^20 * (1 - 0.42)^(30 - 20).

To calculate the binomial coefficient (30 C 20), we can use the formula:

(30 C 20) = 30! / (20! * (30 - 20)!).

Calculating (30 C 20):

(30 C 20) = 30! / (20! * 10!) = (30 * 29 * 28 * 27 * 26 * 25 * 24 * 23 * 22 * 21) / (10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1) = 30,045,015.

Substituting the values into the formula:

P(X = 20) = 30,045,015 * 0.42^20 * (1 - 0.42)^(30 - 20).

Calculating the expression:

P(X = 20) ≈ 0.1031.

Therefore, the probability that exactly 20 out of 30 randomly selected adult smartphone users use their smartphones in meetings or classes is approximately 0.1031, or 10.31%.

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The probability for this case is P = 0.147

To solve this problem, we can use the binomial probability formula. In this case, we have a binomial distribution with the following parameters:

The formula for the probability of exactly x successes in n trials is:

[tex]P(X = x) = (N_x) * p^x * (1 - p)^(n - x)[/tex]

Where:

[tex](N_x) = n! / (x! * (n - x)!)[/tex]

Calculating the binomial coefficient:

[tex](30_{20}) = 30! / (20! * (30 - 20)!) = 30! / (20! * 10!)[/tex]

Using the given values, we can calculate the probability as follows:

[tex]P(X = 20) = (30_{20}) * (0.42^{20}) * (1 - 0.42)^{(30 - 20)} = 0.147[/tex]

that is the probability.

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Alex and Juana canoed 75% of the total distance on the first day of their trip.

To find the percentage of the total distance they canoed on the first day, we need to divide the distance they traveled on the first day by the total distance and then multiply by 100.

Total distance of the canoe trip = 32 miles

Distance traveled on the first day = 24 miles

Calculate the percentage.

Percentage = (Distance traveled on the first day / Total distance) [tex]\times[/tex] 100

Percentage = (24 miles / 32 miles) [tex]\times[/tex] 100

Percentage = (3/4) [tex]\times[/tex] 100

Percentage = 75%

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Answer:

Step-by-step explanation:

To eliminate the x term in the system of equations, you can multiply Equation P by a constant and then add or subtract it from Equation Q. Let's go through the given steps:

2(x + y = 8):

This step is incorrect because it only multiplies the entire Equation P by 2 without changing the other equation. It does not eliminate the x term.

-2(x + y = 8):

This step is incorrect because it multiplies Equation P by -2, but the equation should be subtracted from Equation Q, not multiplied by -2.

-1(2x + 5y = 24):

This step is incorrect because it only multiplies Equation Q by -1 without changing Equation P. It does not eliminate the x term.

-2(2x + 5y = 24):

This step is correct. By multiplying Equation Q by -2 and then adding it to Equation P, the x term will be eliminated. The resulting equation will involve only the y term, allowing you to solve for y.

Therefore, the correct step to eliminate the x term is -2(2x + 5y = 24).

To prove that the step -2(2x + 5y = 24) eliminates the x term in the system of equations, we need to show that when we perform the elimination, the resulting equation involves only the y term.

Given the system of equations:

Equation P: x + y = 8

Equation Q: 2x + 5y = 24

Multiplying Equation Q by -2:

-2(2x + 5y) = -2(24)

-4x - 10y = -48

Now, let's add Equation P and the modified Equation Q:

(x + y) + (-4x - 10y) = 8 + (-48)

Simplifying the left side of the equation:

x - 4x + y - 10y = 8 - 48

-3x - 9y = -40

As we can see, the resulting equation -3x - 9y = -40 involves only the y term. The x term has been eliminated.

Therefore, by performing the step -2(2x + 5y = 24), we have successfully eliminated the x term in the system of equations.

Answer:

Step-by-step explanation:

To determine which of the given ordered pairs represents the solution to the system of equations, we can substitute the values of x and y into the equations and check if they satisfy both equations.

The system of equations is:

Equation 1: x - 4y = 7

Equation 2: 5x + 9y = 6

Let's check each ordered pair:

(3, -1)

Substituting x = 3 and y = -1 into the equations:

Equation 1: 3 - 4(-1) = 7

3 + 4 = 7

7 = 7 (True)

Equation 2: 5(3) + 9(-1) = 6

15 - 9 = 6

6 = 6 (True)

Since both equations are satisfied, (3, -1) is a solution to the system.

(3, 1)

Substituting x = 3 and y = 1 into the equations:

Equation 1: 3 - 4(1) = 7

3 - 4 = 7

-1 = 7 (False)

Equation 2: 5(3) + 9(1) = 6

15 + 9 = 6

24 = 6 (False)

Since one or both equations are not satisfied, (3, 1) is not a solution to the system.

(1, -3)

Substituting x = 1 and y = -3 into the equations:

Equation 1: 1 - 4(-3) = 7

1 + 12 = 7

13 = 7 (False)

Equation 2: 5(1) + 9(-3) = 6

5 - 27 = 6

-22 = 6 (False)

Since one or both equations are not satisfied, (1, -3) is not a solution to the system.

(-1, -3)

Substituting x = -1 and y = -3 into the equations:

Equation 1: -1 - 4(-3) = 7

-1 + 12 = 7

11 = 7 (False)

Equation 2: 5(-1) + 9(-3) = 6

-5 - 27 = 6

-32 = 6 (False)

Since one or both equations are not satisfied, (-1, -3) is not a solution to the system.

Therefore, the ordered pair (3, -1) represents the solution to the system of equations.

The number she'd have is:

Explanation:

First, let's see which number is in the tens place and which number is in the ones place (the units place).

In the number 548, the place value of 5 is hundreds, the place value of 4 is tens, and the place value of 8 is ones (or units).

So if Sera adds two to the units, she'll have 10. But, since we can't write the number as 5410 (that would be a totally different number), we just write 0 in the units place, and shift 1 to the tens place, which gives us :

550

That's not all, since we also add 1 to the tens:

560

Answer:

D

Step-by-step explanation:

A and D are both equidistant from the x- axis, that is

A is 3 units above the x- axis and D is 3 units below the x- axis

then the x- axis is the line of symmetry

The equation which models the scenario is y = 2.625x

Using the given Parameters

cost per mile = 5.25/2 = $2.625

cost 'y ' for x miles can be modeled using the Multiplication operator thus :

Hence, we have

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Adult admission costs $18, and child admission costs $5.To check:2(5) + 18 = 28, which is true3(5) + 18 = 48, which is also true.

Let's begin by letting x be the cost of adult admission, and y be the cost of a child admission, so we have two equations:2y + x = 28
3y + x = 48

Subtracting the first equation from the second one, we get:3y + x - (2y + x) = 48 - 28y = 20Therefore, we can solve for x by plugging in y=5 in either equation.

Using the first equation, we have:2(5) + x = 28x = 18

Thus, adult admission costs $18, and child admission costs $5.To check:2(5) + 18 = 28, which is true3(5) + 18 = 48, which is also true.

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The correct statement from the graph is this: A. At point b, the level of investment spending is higher than at point a.

The diagram depicts an investment spending curve that is shifting to the left. This investment curve shifts to the right when factors like government and investment spending are increasing.

In the case of the above curve, the factors are decreasing. So in the case of the above curve, at point b, the IS is at a higher rate than at point A. So, option A is right.

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Complete Question:

Study the following diagram and answer the question. Which one of the following statements is correct? Select one: A. At point b, the level of investment spending is higher than at point a. B. At point a the demand for goods is higher than at point b. C. At point b, government spending will be higher since the level of output and income is higher. D. An increase in the interest rate causes a movement along the IS curve from point a to point b.

Dennis bought some pears for his students. If every 3 students get pears, there will be 6 pears left. If each student gets 5 pears, 2 students will have no pears. So, there are 2 students in total.

Let's assume the total number of students is 'x'.

According to the first scenario, if each group of 3 students receives pears, there will be 6 pears left. This means that the number of pears must be a multiple of 3 plus 6. So, we can write the equation:

[tex]P = 3n + 6[/tex], where P represents the total number of pears and n is a positive integer.

In the second case, if two students are left out of the distribution of pears and each student receives five, the sum of the pear distributions should be a multiple of five plus two. This can be said as follows:

[tex]P = 5x + 2[/tex], where P represents the total number of pears and x is the total number of students.

Since both equations represent the same number of pears, we can equate them:

[tex]3n + 6 = 5x + 2[/tex]

Rearranging the equation, we get:

[tex]3n - 5x = -4[/tex]

Our next aim is to find a solution where n and x are positive integers. Starting by examining the values of n and x is a smart idea. Trial and error leads us to the conclusion that n = 4 and x = 2 satisfy the following equation:

[tex]3*4 - 5*2 = -4[/tex]

So, there are 2 students in total.

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Answer:

x>-3

Step-by-step explanation:

x-7<-10

x<-10+7

x<-3

x>-3

The value of x is 63

To determine the value of the variable, we have that;

From the information given, we have that;

x and x - 36 are complementary angles

Now, equate the angles to 90 degrees, we have;

x + x - 36= 90

collect the like terms, we get;

2x = 90 + 36

add the terms

2x =1 26

Divide by the coefficient

x = 63

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Complete question:

The angles X,(x-36)  are complementary. What is the value of x

The number of years of employment is A. Nikhil has been with the company for 16 years, while Mae has been there for 4 years.

The system of equations given is:

x = 4y

x = 8 + 2y

You can solve the system by setting the two expressions for x equal to each other:

4y = 8 + 2y

2y = 8

2y / 2 = 8 / 2

y = 4

Substitute y = 4 into the first equation to solve for x:

x = 4 x 4

= 16

So, Mae (y) has been at the company for 4 years and Nikhil (x) has been at the company for 16 years.

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i. The first two terms of the series are 50/3 and 100/9, and the fifth term is 800/243.

ii. The first two terms of the series are 0 and 3, and the fifth term is 48.

The first term of the series is can be obtained by substituting n=1 into the formula

Thus;

first term = 25(2/3[tex])^1[/tex]= 25(2/3) = 50/3

The second term of the series is obtained by substituting n=2 into the formula

second term = 25(2/3[tex])^2[/tex] = 25(4/9) = 100/9

The fifth term of the series is obtained by substituting n=5 into the formula

fifth term = 25(2/3[tex])^5[/tex] = 25(32/243) = 800/243

Therefore, the first two terms of the series are 50/3 and 100/9, and the fifth term is 800/243.

(ii) The first term of the series is obtained by substituting n=1 into the formula

first term = [tex]3(1-1)^2 = 3(0)^2 = 0[/tex]

The second term of the series is obtained by substituting n=2 into the formula

second term = [tex]3(2-1)^2 = 3(1)^2 = 3[/tex]

The fifth term of the series is obtained by substituting n=5 into the formula

fifth term = [tex]3(5-1)^2 = 3(16) = 48[/tex]

Therefore, the first two terms of the series are 0 and 3, and the fifth term is 48.

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Answer:

n = 10/3

Step-by-step explanation:

Let n be the number

[tex]n(-\frac{9}{44}) = -\frac{15}{22} \\ Cross multiply\\n = \frac{-44(-15)}{9(22)} \\n = \frac{660}{198} \\n = \frac{10}{3}[/tex]

The Division of the sum of (7/8), (15/4), and (1/12) by their multiplication is (2712/168).

To find the division of the sum of (7/8), (15/4), and (1/12) by their multiplication, we first need to calculate the sum and multiplication of the given fractions.

The sum of the fractions is:

(7/8) + (15/4) + (1/12)

To add these fractions, we need a common denominator. The least common multiple of 8, 4, and 12 is 24. Let's convert each fraction to have a denominator of 24:

(7/8) = (21/24)

(15/4) = (90/24)

(1/12) = (2/24)

Now we can add the fractions:

(21/24) + (90/24) + (2/24) = (113/24)

The multiplication of the fractions is:

(7/8) * (15/4) * (1/12)

To multiply fractions, we multiply the numerators and denominators:

(7*15*1) / (8*4*12) = (7/96)

Now we can divide the sum of the fractions by their multiplication:

(113/24) / (7/96)

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction:

(113/24) * (96/7) = (2712/168)

Therefore, the division of the sum of (7/8), (15/4), and (1/12) by their multiplication is (2712/168).

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Answer:

third option

Step-by-step explanation:

under a counterclockwise rotation of 90° about the origin

a point (x, y ) → (y, - x )

Then

A (- 1, - 2 ) → (- 2, - (- 1) ) → (- 2, 1 )

B (2, - 2 ) → (- 2, - 2 )

C (1, - 4 ) → (- 4, - 1 )

The new coordinates are (d) A = (2, -1) B = (2, 2) and C = (4, 1)

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

The figure,

Where, we have

A = (-1, -2)

B = (2, -2)

C = (1, -4)

The rule of 90 degrees counterclockwise is

(x, y) = (-y, x)

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

A = (2, -1)

B = (2, 2)

C = (4, 1)

Hence, the new coordinates are (d) A = (2, -1) B = (2, 2) and C = (4, 1)

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The simplified values of each given expressions involving factorials are:

1) 3!6! = 4,320       2) 5!7! = 604,800

Factorials are the product of a given number and all positive integers smaller than it, denoted by an exclamation mark (!).

To evaluate and simplify the expressions involving factorials, calculate the factorials and then simplify the resulting values you get:

1. 3!6!

To calculate 3! (3 factorial), we multiply all the integers from 1 to 3:

3! = 3 × 2 × 1 = 6

Next, we calculate 6! (6 factorial) by multiplying all the integers from 1 to 6:

6! = 6 × 5 × 4 × 3 × 2 × 1 = 720

Therefore, 3!6! = 6 × 720 = 4,320.

2. 5!7!

5! = 5 × 4 × 3 × 2 × 1 = 120

7! = 7 × 6 × 5 × 4 × 3 × 2 × 1 = 5,040

Therefore, 5!7! = 120 × 5,040 = 604,800.

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1. The x - intercepts of the parabola are

2. The meaning of the x-intercepts are the plane takes of at x = 2.5 s and lands at x = 7.5 s

3. The vertex of the parabola is at (5, 80).

A parabola is a curved shape

1. Given the parabola above, to find the x - intercepts, we proceed as follows.

The x-intercepts are the points at which the graph cuts the x-axis.

They are

2. The meaning of the x-intercepts in this problem are the points where the plane takes off and lands on the ground.

The plane takes of at x = 2.5 s and lands at x = 7.5 s

3. The vertex is the maximum point on the graph.

So, we see that the vertex is at x = 5 s and y = 80 ft

So, the vertex is at (5, 80).

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The value of x is approximately 80419.4861.

To find the value of x in the equation:

15 (2/3) × 3 (1/6) + 6 (1/3) = 11 (7/8) + x

Let's simplify each side of the equation separately:

On the left side:

15 (2/3) × 3 (1/6) can be calculated as follows:

15 (2/3) = 15 + (2/3) = 15 + 2/3 = 45/3 + 2/3 = 47/3

3 (1/6) = 3 + (1/6) = 3 + 1/6 = 18/6 + 1/6 = 19/6

So, on the left side, we have:

47/3 × 19/6 + 6 (1/3)

To multiply fractions, we multiply the numerators and denominators:

(47 × 19) / (3 × 6) + 6 (1/3)

47 × 19 = 893

3 × 6 = 18

So, we have:

893/18 + 6 (1/3)

Now, let's convert 6 (1/3) to a fraction:

6 (1/3) = 6 + (1/3) = 6 + 1/3 = 18/3 + 1/3 = 19/3

Now, we have:

893/18 + 19/3

To add fractions, we need a common denominator, which is the least common multiple (LCM) of 18 and 3, which is 18. Let's convert both fractions:

893/18 + 19/3 = (893 × 1) / (18 × 1) + (19 × 6) / (3 × 6)

= 893/18 + 114/18

Now, we can combine the fractions:

(893 + 114) / 18 = 1007/18

On the right side of the equation, we have 11 (7/8) + x. Let's convert 11 (7/8) to a fraction:

11 (7/8) = 11 + (7/8) = 11 + 7/8 = 88/8 + 7/8 = 95/8

Now, the equation becomes:

1007/18 = 95/8 + x

To solve for x, we need to get rid of the fraction on the right side. We can find a common denominator, which is 18 × 8 = 144:

(1007 × 8) / (18 × 8) = (95 × 18 + x × 144) / (8 × 18)

80456/144 = (1710 + 144x) / 144

Cross-multiplying gives us:

80456 × 144 = 1710 + 144x

11598864 = 1710 + 144x

Rearranging the equation:

144x = 11598864 - 1710

144x = 11597154

x = 11597154/144

Evaluating the expression:

x = 80419.4861

Consequently, x has a value of around 80419.4861.

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The angles are matches as;

a. 65 degrees

b. 62 degrees

c. 33 degrees

d. 38 degrees

First, we need to know the properties of a triangle.

These properties are given as;

Then, we have from the information given that;

1. x + 28 + 87 = 180

collect the like terms, we have;

x = 180 - 115

x = 65 degrees

2. x + 16 + 102 = 180

collect like terms

x = 180 - 118

x = 62 degrees

3.  x + 96 + 51 = 180

collect like terms

x = 180 - 147 = 33 degrees

4. x + 119 + 23 = 180

x = 38 degrees

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Ayaan drank 11/4 bottles of water during the soccer game, which can be expressed as a mixed numeral 2 and 3/4.

To convert the fraction 11/4 to a mixed numeral, we need to determine the whole number part and the fractional part.

Divide the numerator (11) by the denominator (4).

11 ÷ 4 = 2 remainder 3

The quotient 2 represents the whole number part, and the remainder 3 represents the fractional part.

Write the mixed numeral using the whole number part and the fractional part.

The mixed numeral for 11/4 is:

2 and 3/4

Therefore, Ayaan drank 11/4 bottles of water during the soccer game, which can be expressed as a mixed numeral 2 and 3/4.

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The solution to the system of equations, y = 3x + 15 and 3x + 3y = 9 is one unique solution, which is (-3, 6) [see image attached below].

To graph the system of equations and determine the solution, let's start with each equation individually:

y = 3x + 15

3x + 3y = 9

To graph the first equation, y = 3x + 15, we can plot a line with a slope of 3 and a y-intercept of 15. This line will have a positive slope, meaning it goes upward from left to right.

To graph the second equation, 3x + 3y = 9, we can rearrange it to the slope-intercept form y = (-1)x + 3, or simplified as y = -x + 3. This equation represents a line with a slope of -1 and a y-intercept of 3. This line will have a negative slope, meaning it goes downward from left to right.

Now, let's analyze the graphed lines and their intersection to determine the solution:

From the graphs as shown in the image attached below, we can see that the lines intersect at the point (-3, 6). This means that the solution to the system of equations is a single unique solution.

Therefore, the correct answer is option b. There is one unique solution (-3, 6).

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Answer:

A

Step-by-step explanation:

consider the coordinates of points C and A

C (4, - 1 ) and A (- 3, 2 )

4 → - 3 in the x- direction is - 7

- 1 → 2 in the y- direction is + 3

then the translation rule is

(x, y ) → (x - 7, y + 3 )

Answer: 1.5mg of medicine is to be added to 500ml of water to gain a solution of 3mg per liter

Step-by-step explanation:

3mg per liter is needed. That is 3mg of medicine in 1000ml of water.

As we have only 1.5 mg of medicine that is half of 3mg. We have to add a half of one liter of water. that is 500 ml of water.

Answer:

Step-by-step explanation: