Line QR goes through points Q(0, 1) and R(2, 7). Which equation represents line QR?
a. y – 1 = 6x
b. y – 1 = 3x
c. y – 7 = 2x – 6
d. y – 7 = x – 2

Answer:

What if it was $32 and $44, 82 and 54?

Step-by-step explanation:

On a certain day, the company took 82 people on whale watching trips. There were 54 children aged 12 and under, of which some children were under three years. If x represents the number of children under three years, which equation can be used to find the value of x, where C represents the total amount of money collected from tickets that day?

Final answer:

The rock takes 2 seconds to hit the ground.

Explanation:

In order to find the time it takes for the rock to hit the ground, we can analyze the vertical motion of the rock. Since the rock is kicked horizontally, its initial velocity in the vertical direction is zero. The acceleration due to gravity is -9.8 m/s^2.

Using the equation h = ut + (1/2)gt^2, where h is the height, u is the initial velocity, g is the acceleration due to gravity, and t is the time, we can plug in the values to find the time.

Since the rock is kicked horizontally, the initial velocity in the vertical direction (uy) is zero, so the equation becomes h = (1/2)gt^2. We know that h = 0 since the rock is at the ground, and g = -9.8 m/s^2. Plugging these values into the equation, we get 0 = (1/2)(-9.8)t^2.

Solving for t, we find that t = 0 or t = 2 seconds. Since time cannot be negative, the rock takes 2 seconds to hit the ground.

Answer:

[tex]DA=3[/tex]

Step-by-step explanation:

We have been given an image of a circle and we are told that Secant DB intersects secant DZ at point D.    

We will use intersecting secants theorem to solve our given problem.  

Intersecting secants theorem states that if two secants say MN  and KL intersect at a point 'X' outside the circle, then product of XN and MX equals the product of XL and KX.

Using intersecting secants theorem we can set an equation as:

[tex]DA\cdot DB=DY\cdot DZ[/tex]

Upon substituting our given values in above equation we will get,

[tex]3x\cdot (3x+8)=x\cdot (32+x)[/tex]

Upon dividing both sides of our equation by x we will get,

[tex]\frac{3x\cdot (3x+8)}{x}=\frac{x\cdot (32+x)}{x}[/tex]

[tex]3\cdot (3x+8)=32+x[/tex]

Upon using distributive property [tex]a(b+c)=a*b+a*c[/tex] we will get,

[tex]9x+24=32+x[/tex]

[tex]9x-x+24-24=32-24+x-x[/tex]

[tex]8x=8[/tex]

Upon dividing both sides of our equation by 8 we will get,

[tex]\frac{8x}{8}=\frac{8}{8}[/tex]

[tex]x=1[/tex]

Since the length of DA is 3x, so upon multiplying 3 by 1 we will get,

[tex]\text{Length of DA}=3\cdot 1=3[/tex]

Therefore, the length of DA is 3 units.

Answer:

ANswer is D on edgeunity

Step-by-step explanation:

1.D ,square root of 2

2.C, undefined

3. A

4. A, about -1

5. D, 12.3 feet

The correct initial velocity (v) for the basketball to go through the hoop is approximately 0.0406 ft/s.

To find the initial velocity v, we can use the given information and set up the equation using the height of the hoop and the distance away from the hoop. The equation of the path of the basketball is given by:

y = -16x^2/(0.434v^2) + 1.15x + 8

Given that the hoop is 10 feet high and located 17 feet away, we can substitute these values into the equation:

10 = -16(17)^2/(0.434v^2) + 1.15(17) + 8

Now, we can solve this equation for the initial velocity v. First, simplify the equation:

10 = -16(17)^2/(0.434v^2) + 19.55 + 8

Combine the constant terms on the right side:

10 = -16(17)^2/(0.434v^2) + 27.55

Now, isolate the term with v on one side:

(16(17)^2)/(0.434v^2) = 17.55

Next, multiply both sides by (0.434v^2)/(16(17)^2) to solve for v^2:

v^2 = (16(17)^2)/(0.434 * 17.55)

Now, take the square root of both sides to find v:

v = sqrt((16(17)^2)/(0.434 * 17.55))

Calculating this expression will give you the initial velocity v. Let's calculate:

v ≈ 0.0406 ft/s

The initial velocity v of the basketball should be approximately [tex]\(14.86 \, \text{ft/sec}\)[/tex] for it to go through the hoop.

To find the initial velocity v required for the basketball to go through the hoop, we utilize the parabolic model [tex]\(y = -\frac{16x^2}{0.434v^2} + 1.15x + 8\)[/tex]. Given that the height of the hoop (y) is 10 feet and the distance away from the hoop (x) is 17 feet, we substitute these values into the equation:

[tex]\[10 = -\frac{16 \cdot 17^2}{0.434v^2} + 1.15 \cdot 17 + 8.\][/tex]

First, simplify the equation:

[tex]\[10 = -\frac{16 \cdot 17^2}{0.434v^2} + 1.15 \cdot 17 + 8.\][/tex]

Combine like terms:

[tex]\[10 = -\frac{16 \cdot 17^2}{0.434v^2} + 19.55.\][/tex]

Isolate the fraction:

[tex]\[\frac{16 \cdot 17^2}{0.434v^2} = 9.55.\][/tex]

Now, solve for v²:

[tex]\[v^2 = \frac{16 \cdot 17^2}{0.434 \cdot 9.55}.\][/tex]

Finally, find v by taking the square root:

[tex]\[v \approx \sqrt{\frac{16 \cdot 17^2}{0.434 \cdot 9.55}} \approx 14.86 \, \text{ft/sec}.\][/tex]

The calculation shows that an initial velocity of approximately [tex]\(14.86 \, \text{ft/sec}\)[/tex] is required for the basketball to follow the modeled path and successfully go through the hoop.

To find the coordinates of the points common to the graphs of f and g, set f(x) equal to g(x) and solve for x. The zeros of f(x) are approximately x = -1, 2, and 2.98. The range of f when the domain is limited to [0,2] is approximately [-1,9].

To find the coordinates of the points common to the graphs of f and g, we will set f(x) equal to g(x) and solve for x.

f(x) = g(x)

[tex]x^3-6x^2+9x = 4\\x^3-6x^2+9x-4 = 0[/tex]

Using a graphing calculator or software, we can find that the zeros of f(x) are approximately x = -1, 2, and 2.98.

The range of f when the domain is limited to the closed interval [0,2] is the set of y-values that f(x) takes on within that interval.

By using the First Derivative Test, we can determine that the range of f in the interval [0,2] is approximately [-1,9].

You can factor, that takes almost no effort

Hope this helps

Answer:

inspection method

Step-by-step explanation:

The number -9 is a rational number as it can be written as a fraction of two integers, specifically -9/1.

The number -9 is a rational number because it can be expressed as a fraction of two integers: -9/1 where -9 is the numerator and 1 is the denominator. By definition, rational numbers include all integers, as each integer can be written as a fraction with a denominator of 1. This is different from irrational numbers, which cannot be written as a simple fraction. An example of an irrational number is the square root of 2, which cannot be precisely expressed as a fraction of two integers.

The expression for adding 8 to the sum of 23 and 10 is (23 + 10) + 8. This is due to the commutative property of addition, which states that the order in which you add numbers does not change the result.

The question asks for an expression to calculate adding 8 to the sum of 23 and 10. The first step is to add 23 and 10 together, which equals 33. Then add 8 to that sum. You can represent this process mathematically as (23 + 10) + 8. So if you need to write an expression for adding 8 to the sum of 23 and 10, it would be (23 + 10) + 8. Remember, adding numbers together (a process called addition) is commutative, meaning you can add numbers in any order and still get the same result.

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-Line

Two adjacent, supplementary angles form a straight line

Final answer:

To show that the differential equation M(x) + N(y)dy/dx=0 is separable, we must demonstrate that M and N can be expressed as functions of x and y respectively, without overlap, leading to an equation of the form f(y)dy/dx + g(x) = 0. Explanation of separable equations through specific cases and integration methods.

Explanation:

Separable equations involve the relationship M(x) + N(y)dy/dx = 0. To show this, you can use specific cases where M and N can be separated into functions of only x or y.

For example, if M/N can be expressed as f(y)/g(x), then the separable equation becomes f(y)(dy/dx) + g(x) = 0.

Integrating M(x, y) with respect to x can lead to finding a function f(x, y) that satisfies the given differential relationship.

Using the exchange rate $1 U.S. = 0.678 euros, the cost of the souvenirs in US dollars is calculated by dividing the total in euros (44 euros) by the exchange rate (0.678). The result is approximately $64.89.

To find the cost of the souvenirs in US dollars, we must first understand the exchange rate provided $1 U.S. = 0.678 euros. This means that one dollar buys 0.678 euros. To convert the euros to dollars, we divide the amount in euros by the exchange rate. Here's how you can do it:

When you carry out the calculation, you'll get approximately $64.89. Therefore, the cost of the souvenirs in US dollars is around $64.89.

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The tax on an item of price p is calculated as 0.12p and the total price is p + 0.12p. On calculating for an item that costs 75, the total cost with tax is 84. The order of operations (PEMDAS/BODMAS) was used to solve the problem accurately

The tax on the item with a price p can be given by the expression 0.12p, using the operation of multiplication. The total price of the item, including tax would be p + 0.12p. This is done by using both addition and multiplication operations.

To determine the total price, including tax, of an item that costs 75, we substitute 75 for p in the second expression: 75 + 0.12*75 = 75 + 9 = 84. Therefore, an item that costs 75 before tax would cost 84 with tax.

Order of operations is important in this problem to ensure accurate calculations. According to PEMDAS/BODMAS rules (Parentheses/Brackets, Exponents/Orders, Multiplication and Division, Addition and Subtraction), multiplication should be carried out before the addition, hence why 0.12*75 was calculated before adding the result to the initial cost of the item (75).

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The taxation on an item with a price tag of 'p' can be represented as 0.12p. The total cost, counting tax, is depicted as 1.12p. Applying these expressions, an item priced at 75 would cost 84 including the 12% tax.

The tax on an item with a price p can be expressed as 0.12p. This is because 12% is equivalent to 0.12 in decimal form. To find the total price of the item, including tax, you would add the original price (p) to the tax (0.12p). This can be written as p + 0.12p, or simplified further to 1.12p.

The operations involved in these expressions include multiplication and addition. To determine the total price, including tax, of an item that costs 75, you would plug in 75 for p in the total price expression, 1.12p. This works out to 1.12 * 75 = 84. The order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) dictates that you perform multiplication before addition in the total price expression. Since there are no parentheses or exponents, you would multiply 0.12 by p (or the price of the item), and then add that result to p, to find the total price including tax.

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