If it takes six men six days to dig six holes, how long will it take one man to dig half a hole?

Answer:

The correct option is C.

Step-by-step explanation:

The given equation of curve is

[tex]y=2x^2+1[/tex]

We need to find the area under the given curve from x = 0 to x = 4 using 4 rectangles and left endpoints.

We have 4 rectangles in x = 0 to x = 4. So,

[tex]\Delta x=1[/tex]

Left Riemann sum:

[tex]\sum_{i=0}^{n-1}\Delta xf(x_i)[/tex]

Using Left Riemann sum, we get

[tex]\sum_{i=0}^{4-1}(1)f(i)[/tex]

[tex]\sum_{i=0}^{3}(2i^2+1)[/tex]             [tex][\because y=2x^2+1][/tex]

The area under the given curve from x = 0 to x = 4 using 4 rectangles and left endpoints is

[tex]\sum_{i=0}^{3}2i^2+1[/tex]

Therefore the correct option is C.

The statement 'Some acute angles are more than 90 degrees' can be proven false using a counterexample because by definition, an acute angle cannot be more than 90 degrees. For a statement to be considered true in mathematics, it must cover all possible cases. If a single exception can be found, we can consider the statement false.

The statement that could be proved false using a counterexample among the choices would be 'Some acute angles are more than 90 degrees'. In Mathematics, an acute angle is defined as any angle that measures more than 0 degrees but less than 90 degrees. Hence, the idea of acute angles being more than 90 degrees is definitely incorrect.

Let's examine each statement:

In conclusion, always remember that for a statement to be true in mathematics, it must cover all possible cases. When a single exception can be found, the statement can be considered false.

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Net worth is the calculation of an individual's assets minus their liabilities, while tallying of expenses is a regular tracking of personal spending without considering overall assets or debts. An example of this can be seen in the use of credit cards and savings accounts and their respective interest rates.

The calculation of net worth and the day-to-day or month-to-month tallying of expenses are two different aspects of personal finance. Net worth is a calculation that is made by subtracting a person's liabilities from their assets. In other words, it is your assets (what you own) minus your liabilities (what you owe). On the other hand, tallying of expenses is a way to track your spending habits on a daily or monthly basis, which does not take into account one's assets or debts.

For instance, let's consider a person who owns a house (an asset), but also owes some amount on the mortgage (a liability). Their net worth would be the value of the house minus what's still owed on the mortgage. This is different from keeping track of daily or monthly expenses, which may include the mortgage payment, grocery bills, car payments, and other outgoings.

A common example of the difference is seen in credit card usage. A person might have a $1,000 credit card debt with a 15% interest rate, and simultaneously, a savings account of $2,000 that pays only 2% interest. They are losing money overall because the credit card debt costs more than the savings account earns. To increase their net worth, the rational decision would be to pay off the debt, but this wouldn't necessarily reduce their monthly expenses since they would still need to meet their day-to-day costs.

Calculating net worth is different from day-to-day or month-to-month tallying of expenses. Net worth is a measure of a person's financial wealth, while expense tracking helps monitor spending habits.

Calculating net worth is different from day-to-day or month-to-month tallying of expenses. Net worth is a measure of a person's financial wealth and is calculated by subtracting the total liabilities from the total assets. It provides a snapshot of an individual's overall financial health and is not influenced by short-term spending or expenses.

On the other hand, day-to-day or month-to-month tallying of expenses involves tracking and categorizing the money spent on various items or activities over a specific period. It helps individuals manage their budget, track their spending habits, and make informed financial decisions on a regular basis.

While net worth provides a big-picture view of a person's financial situation, day-to-day expense tracking helps monitor and control spending on a more detailed level to achieve financial goals.

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Answer:

c

Step-by-step explanation:

Answer:It's A(45)

Step-by-step explanation:

Got it right on Edge

Answer:

The correct option is 4.

Step-by-step explanation:

From the given figure it is noticed that the triangle CDG and triangle FCE have a common vertex C. So both triangle are sharing same angle at vertex C.

In triangle CDG and triangle FCE

[tex]\angle GCD\cong \angle FCE[/tex]

If the length of two adjacent sides increases, then the inclined angle remains the same.

If the side CD increased to E and side CF increased to G, then

[tex]\angle GCE\cong \angle ECG[/tex]

Therefore option 4 is correct.

Region C in the Venn diagram represents students who slept more than 7 hours per night and improved in school performance, as it is the intersection of both sets A and B. The correct option is C.

In the context of the Venn diagram described, where 'A' represents students who slept more than 7 hours per night, and 'B' represents those who improved in school performance, the region 'C' would typically represent the intersection of these two groups.

Therefore, the group of students that region C would represent is option B: students who slept more than 7 hours per night and did improve in school performance. This is because the Venn diagram's intersection area (region C) visually demonstrates where both conditions (sleeping more than 7 hours and improvement in school performance) are met simultaneously.

The required time to run for 9.6 miles is 1.5 hours, as of the given conditions.

Speed is defined as when an object is in motion, the distance covered by that object per unit of time is called speed.

here,
Teresa is going for a run. she runs for 9.6 miles at a speed of 6 miles per hour.
Speed = 6 miles per hour,
Distance = 9.6 miles

As we know,
Time = DIstance/time

Assign the values,
Time = 9.6/6
Time = 1.5 hours

Thus, the required time to run for 9.6 miles is 1.5 hours.

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Answer:

5 or 10

Step-by-step explanation:

counting by 2's    - 70, 72, 74, 76, 78, 80, 82      82 is here, Incorrect

counting by 5's    -70, 75, 80, 85, 90                Never said 82, Correct

counting by 10's  - 70, 80, 90-                           Never said 82, Correct

Answer:

Rickey keep 2/3 or 0.7 fudge.

Step-by-step explanation:

Consider the provided information.

John made of a pound of fudge and Mary made of a pound of fudge.

Ricky takes the sum of the two amounts of fudge

The sum of the two amounts of fudge is 2 pound.

He divides it into three equal portions.

[tex]\frac{2}{3}=0.\overline6\approx0.7[/tex]

Hence Rickey keep 2/3 or 0.7 fudge.

Answer:

Option A is the answer.

Step-by-step explanation:

Table is given as

Year                    2010           2011            2012          2013    

Spring league      68               79              90              101  

Fall league           145             148             151              154

Now as per given table we will analyze each option given

A). Difference in spring league participation increasing every year = 79-68 = 11

Difference in Fall league increasing every year = 148-145 = 3

Therefore option A is true because [tex]\frac{11}{3}>3[/tex] Spring league is increasing more than twice as fast as fall league.

B). This option is not true because participation in the spring league is increasing nearly 4 times of Fall league.

C) False. Spring league participation is more than fall league.

D) False. Same as option C because spring league participation is more than fall league.

Answer:

32 units.

Step-by-step explanation:  

We have been given a graph of a line segment and we are asked to find the length of line segment TW.

Upon looking at our graph we can see that point U divides segment TW in two equal parts (TU and UW), which means that length of TW will be two times the length of TU or UW.    

We have been given the length of TU is 16 units. To find the length of segment TW we will multiply 16 by 2.  

[tex]\text{Length of TW}=2\times 16=32[/tex]

Therefore, the length of line segment TW will be 32 units.

The components of the vector in rectangular form given magnitude and angle can be found by using the following formulas: [tex]x = \|\vec r\|\cdot \cos \theta[/tex], [tex]y = \|\vec r\| \cdot \sin \theta[/tex].

Let be a vector in rectangular form, that is, a vector of the form (x, y). The magnitude can be found by applying the square root of the dot product of the vector or the Pythagorean theorem and the direction is determined by applying inverse trigonometric functions:

[tex]\|\vec r\| = \sqrt{(x,y)\,\bullet\,(x,y)}[/tex]     (1)

[tex]\|\vec r \| = \sqrt{x^{2}+y^{2}}[/tex]     (2)

θ = tan⁻¹ (y/x)     (3)

And the components of the vector can be found by applying the following formulas:

[tex]x = \|\vec r\|\cdot \cos \theta[/tex]     (4)

[tex]y = \|\vec r\| \cdot \sin \theta[/tex]     (5)

The components of the vector in rectangular form given magnitude and angle can be found by using the following formulas: [tex]x = \|\vec r\|\cdot \cos \theta[/tex], [tex]y = \|\vec r\| \cdot \sin \theta[/tex].

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You can find the components of a vector given its magnitude and angle by using the cosine function to find the horizontal component, and the sine function to find the vertical component.

To find the components of a vector given its magnitude and angle, you will use basic trigonometric ratio principles. These principles typically involve the use of sine (sin) and cosine (cos) functions.

First, consider a vector V with magnitude (or length) denoted by |V| and an angle θ from the positive x-axis. The components of the vector can be resolved into horizontal (x-direction) and vertical (y-direction) components.

The x-component (Vx) of the vector can be found using the equation:
Vx = |V| cos(θ).
Similarly, the y-component (Vy) of the vector can be found using the equation:
Vy = |V| sin(θ).

These equations are derived from the definitions of the sine and cosine functions in a right triangle, which is formed by the vector V and its components.

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In the regression model, y = β₀ + β₁ x + ε,  β₁  represents the slope of the regression line.

A regression model offers a function that explains the association between one or more independent variables and a response, dependent, or target variable. A linear regression model, for instance, may be used to explain the link between height and weight.

The standard equation of regression model is y = a + bx

The given regression model,

y = β₀ + β₁ x + ε

The coefficient of the x in the regression model shows the slope of the regression line.

Hence, β₁  represents the slope of the regression line.

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