question is in the image, i need the method answer for part b.

the question says: "the diagram shows the position of two ships, A and B, and the coastguard station, C."

The intervals for which the function y = -7 - |x| is increasing and decreasing is given as follows:

The function is defined as follows:

y = -7 - |x|.

The parent absolute value function is increasing for x > 0 and decreasing for x < 0.

For this problem, the multiplication by -1 means that the function was reflected over the x-axis, meaning that the intervals of decrease and increase were exchanged, and thus they are given as follows:

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The solution  to the system of equations is (x, y) = (2, -1).

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

WE are given the  system of equations

2x−y=5

y = 2x - 5

y=3x−7

Adding the two equations Then divide by 2

Subtracting the second equation from the first gives;

0 = x -2

x = 2

y = -1

therefore, The solution is (x, y) = (2, -1).

The solution  to the system of equations is (x, y) = (2, -1).

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x=60°, y=15°, angle C is 45°, angle DBC is 105° and angle CBA is 75°.

In the given figure, ∠DBC=7y°, ∠CBA=5y°, ∠C=3y° and ∠D=x°.

Angle sum property of triangle states that the sum of interior angles of a triangle is 180°.

Here,

∠DBC+∠CBA=180° (Sum of adjacent angles is 180°)

⇒ 7y°+5y°=180°

⇒ 12y°=180°

⇒ y°=15°

∠DBC=7y°=105°, ∠CBA=5y°=75° and ∠C=3y°=45°

Now, ∠DBC=∠C+∠A

⇒ 105°=45°+∠A

⇒ ∠A=60°

Therefore, x=60°, y=15°, angle C is 45°, angle DBC is 105° and angle CBA is 75°.

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Answer:

A=1 B=2 C=7

Step-by-step explanation:

Look at the graph!!!!

Area of the given rectangle as per given perimeter and width is equal to 60m².

As given in the question,

Perimeter of the given rectangle = 64m

Width of the given rectangle 'w' = 2m

Let us consider 'l' be the length of the rectangle

Perimeter of the rectangle = 2 ( l + w )

Substitute the values

64 = 2 ( l + 2)

⇒32 = l + 2

⇒l = 32 - 2

⇒l = 30m

Area of the given rectangle = l × w

                                              = 30 × 2

                                              = 60m²

Therefore, the area of the given rectangle as per given dimensions is equal to 60m².

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If Richard is 13 years older than twice Teo's age. The age of Richard and Thiago will be 23 and 5 respectively.

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that are +, -, ×, and ÷.

It is given that, Richard and Teo have a combined age of 28. Richard is 13 years older than twice Teo’s age.

We have to find the age of Richard and Thiago.

Suppose the age of Richard and Teo be x,

If Richard and Teo have a combined age of 28,

T+R=28 --------(1)

If Richard is 13 years older than twice Teo’s age,

R=( 2T + 13) --------(2)

u

Substitute the value of R in eqation 1

T+( 2T + 13)=28

3T+13=28

3T=28-13

3T=15

T=5

Substitute the value of T in equation 1 to obtain R,

T+R=28

5+R=28

R=28-5

R=23

Thus, if Richard is 13 years older than twice Teo age. The age of Richard and Thiago will be 23 and 5 respectively.

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The value of y after solving the triangle using sine rule is 46.15.

Sine rule is a rule that relates the sides of a triangle with the sine of their opposite angles.

To calculate the value of y, we use the sine rule formula

Formula:

Where:

From the question,

Given:

Susbtitute these values into equation 1 and solve for y

Hence, the value of y is 46.15.

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For 160 calories and 20 grams of carbohydrates 0.61 cups are required.

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that a one-cup serving of spaghetti with meatballs contains 260 calories and 32 grams of carbohydrates. A one-cup serving of chopped iceberg lettuce contains 5 calories and 1 gram of carbohydrates.

For 160 calories the number of cups will be calculated as,

1 cup = 260 calories

160 calories = ( 160 ) / 260 cups

160 calories = 0.61 cups

Therefore, for 160 calories and 20 grams of carbohydrates 0.61 cups are required.

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Answer:

A. 4

Step-by-step explanation:

x/2 - 5 = -3

x/2 = 2

x = 4

Multiply both sides of the equation by 2.

Add 10 to both sides.

Add −6 and 10 to get 4.

Answer:

Go up by 1 and run 4, remeber slope: rise over run. If the point is 8,5 then find 8 on the x axis and 5 and the y, wherever they meet, that's your answer.

Step-by-step explanation:

The rate of change between the points (3.4, -0.1) and (3.5, 0.1) is 2.

The rate of change function is defined as the rate at which one quantity is changing with respect to another quantity.

The rate of change formula gives the relationship describing how one quantity changes in relation to the change in another quantity.

Therefore,

rate of change = Δy / Δx

rate of change = y₂ - y₁ / x₂ - x₁

Hence, let's find the rate of change of (3.4,-0.1) and (3.5,0.1).

rate of change = 0.1 + 0.1 / 3.5  - 3.4

rate of change = 0.2 / 0.1

rate of change = 2

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Answer:

16 ft

Step-by-step explanation:

The length of the ladder is 16\ ft16 ft

Step-by-step explanation:

Let

L ----> the length of the ladder

we know that

Applying the Pythagoras theorem

L^{2}=15^{2} +6^{2}L

2

=15

2

+6

2

L^{2}=261L

2

=261

L=\sqrt{261}\ ftL=

261

ft

L=16\ ftL=16 ft

Accuracy rate is equal to the difference of predicted value and true value  divide it by true value and then multiply by 100 to get the rate.

Accuracy rate = [ | Predicted value - True vale|/ true value ] × 100

Therefore, the accuracy rate is the percentage of the ratio of difference of predicted value and true value to the true value.

The given question is incomplete, I answer the question in general according to my knowledge:

How is the accuracy rate calculated?

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Answer:

−1.3x − 15.2

Step-by-step explanation:

step 1: simplify

4x−7.2−5.3x−8

=4x+−7.2+−5.3x+−8

step 2: combine like terms

=4x+−7.2+−5.3x+−8

=(4x+−5.3x)+(−7.2+−8)

=−1.3x+−15.2

The round of tip amount.

Total tip = $ 7.00

Total (Bill + Tip) = $ 39.00.

How to Calculate Tip?

To calculate the tip multiply the total check by 1 plus the decimal percentage tip you'd like to leave.

If you wanted to leave a 20% tip, you would add 1 to 0.20 to get 1.20. Multiply the bill by 1.20 to get the total amount you'd leave including tip.

To calculate this, you can multiply the bill amount by the tip percentage: $32 * 0.20 = $6.40.

The tip amount was $6.40.

Hence, the round of tip amount.

Total tip = $ 7.00

Total (Bill + Tip) = $ 39.00.

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In the case of coinciding lines with the same y-intercept, the number of solutions to the equation system is unlimited.

An equation is a mathematical statement that contains the symbol "equal to" between two expressions with identical values. as in 3x + 5 = 15, for example.

There are many different types of equations, such as linear, quadratic, cubic, etc.

Equations are statements in mathematics that have two algebraic expressions on either side of the equals (=) sign.

It shows that the expressions printed on the left and right sides have an equal relationship. In any mathematical equation, we have LHS = RHS (left hand side = right hand side).

Equations can be solved to find the value of an unknown variable that represents an unknown quantity. If there is no "equal to" symbol in the sentence, it is not an equation.

Hence, In the case of coinciding lines with the same y-intercept, the number of solutions to the equation system is unlimited.

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Complete question-

Using the equation y = 2/3 x - 5, describe how to create a system of linear equations with an infinite number of solutions.

Rounded to the nearest tenth of a million dollars, the company made $3.2 million in profit in the year 2003.

Profit is a financial gain that occurs when the revenue from a company activity is more than the costs, costs, and taxes required to support the activity. It is, in other words, the difference between income and costs. Profit is an important aspect in a company's performance and is often quantified in monetary terms, but it may also be viewed .For example, for each consecutive year after that, their profit increased by 13%.

Profits may be divided into two categories: net profit and gross profit. After deducting all costs, taxes, and expenses, a company's net profit is the overall profit it has made. In contrast, gross profit is the profit made by a firm before expenses and costs are deducted.

How to solve?

In the year 2001, the company made $2.2 million * 1.13 = $2.486 million in profit.

In the year 2002, the company made $2.486 million * 1.13 = $2.82778 million in profit.

In the year 2003, the company made $2.82778 million * 1.13 = $3.1987314 million in profit.

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Answer: y=-3/4x-3.5

Step-by-step explanation:

First, set up the equation based on the information we already know. The slope-intercept form is y=mx+b (m being the slop and b is the y-intercept)

We already know the slope, so we can substitute it.

y=-3/4x+b

Now, the only variable we need to find is b (the y-intercept)

To do this we can substitute the point that was given, (2,-5)

Substitute -5 in for y and 2 in for x.

Then you get the equation -5=-3/4(2)+b

Multiply -3/4 and 2 and you get -5=-3/2+b

Add -3/2 from both sides to isolate b

You then get b=-3.5

Substitute b back in the original equation

Your final answer is y=-3/4x-3.5

The probability that the sample mean will lie between 1070 and 1120 is .7001 to .8500.

To find the probability that the sample mean will lie between 1070 and 1120, we use the Z-score formula:

Z = (x - μ) / σ

where x is the value we are looking for (in this case 1070 or 1120), μ is the population mean (1100), and σ is the population standard deviation (100).

Using this formula, we can calculate the Z-scores for 1070 and 1120, which are -0.3 and 0.2 respectively.

We can then use a Z-table to find the probability associated with each of these Z-scores. The probability associated with a Z-score of -0.3 is 0.6179, and the probability associated with a Z-score of 0.2 is 0.7886.

The probability that the sample mean will lie between 1070 and 1120 is the difference between these two probabilities, which is 0.1707. This is equivalent to a probability of 0.7001 to 0.8500.

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Answer:

Step-by-step explanation:

a.) The population is years measured after 2000 so 2000 is 0. Any number to the 0 power is 1 so the population is 23.1 (million).

b.) 28.3 = [tex]23.1e^{0.0152t}[/tex]

1.22510823 ≈ [tex]e^{0.0152t}[/tex]

ln 1.22510823 ≈ 0.0152t

t≈13.4 MILLION

Answer:

99

Step-by-step explanation:

Since the triangles are similar, we know the ratio of the sides is a constant. We know that SQ is 55, and the corresponding side on the other triangle is 10. This lets us find the ratio for the whole triangle! The ratio is 55/10, or 5.5.

To solve for RS, consider the corresponding side on the other triangle(LS) which is 18. We multiply that by the ratio to get 18 * 5.5 = 99, which is the length of RS.

I don't know if you need to solve for x, but if you do, here it is! We have [tex]99 = 12x+3[/tex] (the equation for side RS). subtracting 3 from both sides results in [tex]96 = 12x[/tex], and dividing by x gives us that x = 8.

Thank you! Feel free to ask me any questions about my answer. I hope this helps!

Answer:

A

Step-by-step explanation:

numerator = exponent of x (in this case is 1, so it can be omitted)

denominator = index of the root

√x

Answer:

slope = undefined

Step-by-step explanation:

Find the slope of the line: (5,-3), (5,8)

slope = change in y / change in x

slope = ( -3 - 8) / (5 - 5)

slope = -11/0

slope = undefined

These points graph a vertical line.

answer:

the slope is undefined.

step-by-step explanation:

there is an equation (y2-y1)/(x2-x1) that allows for you to determine the slope. since this line is vertical, the slope is defined because if you plug the points into the equation, you would be dividing by 0.

James Handerson should shoot for 241.5 lbs.

First, convert 15% into a decimal by moving the decimal place over twice to get 0.15.

Then, set up this equation:

0.15 x 210 = 31.5

Now, 31.5 is the percent increase, so now we add to the original weight:

210 + 31.5 = 241.5

241.5 lbs.

I hope my answer helped you! If you need more information or help, comment down below and I will be sure to respond if I am online. Have a wonderful rest of your day!

Answer: Ethan

Step-by-step explanation:

E:A

18:45 on page

12:9 per day

48:36 after 4 days

Ethan is further along in the book after 4 days

Kate should deposit $46,158.28 monthly into an account

In this question, we have been given the amount A = $50,000,

interest rate R = 1.6%

period t = 5 years

We need to find the principal amount (P)

First, convert R as a percent to decimal

r = 1.6/100

r = 0.016

Using the formula of compound interest for P,

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

P = 50,000.00 / (1 + 0.016/12)(12)(5)

P = $46,158.28

Therefore, Kate should deposit $46,158.28

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