stuck on this question

There are two ways you could approach this.

The first is to solve each inequality separately and see which one ends up equal to x ≥ -1.

Another and faster option is to test 0 in each inequality, because 0 is in the solution set and 0 is easy to work with.  (You could do this for any value in the solution set.)

A: Is 4(0) + 3 > 7 true?  No.  3 > 7 is false.  This eliminates A.

B. Is 0/3 - 2 ≥ 2 true?  No.  -2 ≥ 2 is false.  This eliminates B.

C. Is -2(0) - 3 ≤ -1 true?  Yes.  -3 ≤ -1 is false.  We cannot eliminate C.

D. Is 0 + 5 < 4 true?  No.  5 < 4 is false.  This eliminates D.

So based on using x=0, the only possible solution is C.

You can double check this by solving 2x - 3 ≤ -1 for x:

    -2x - 3 ≤ -1

         -2x ≤ 2  (by adding 3 to both sides)

Now when you divide by -2 to solve for x, remember to flip the inequality.

         -2x ≤ 2

             x ≥ -1  

So this confirms that C is correc.

Kimberly sent approximately 34 cylindrical boxes that contained soap

Let's assume Kimberly sent a total of 100 gift boxes. Since half of the boxes were cylindrical, that means she sent 50 cylindrical boxes.

If a third of the rectangular boxes contained soap, then 1/3 * (100 - 50) = 1/3 * 50 = 50/3 ≈ 16.7 rectangular boxes contained soap. Since we cannot have a fraction of a box, let's round it down to 16 rectangular boxes containing soap.

Now, since each box contains exactly one gift, the remaining cylindrical boxes must contain the pack of spicy roasted almonds. Therefore, out of the 50 cylindrical boxes, 50 - 16 = 34 cylindrical boxes contain soap.

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.

The exact value of sin theta as required to be determined in the task content is; sin theta = -3 / 2√10.

It follows from the task content that the exact value of sin theta is required to be determined from the given information.

Since the given terminal side of theta is; (-2, -6) it follows that the length of the hypothenuse in the arrangement is;

= √((-2)² + (-6)²)

= √(4 + 36)

= √40

= 4√10.

Therefore, since sin theta = opposite / adjacent;

Sin theta = -6 / 4√10

sin theta = -3 / 2√10.

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The Equation for Table I is y= 1/3x + 5.

The solution of the Equation is (3, 6).

Equation for Table II

y= -1/3 x +7

Table I:

Slope = (6-5)/ (3-0)

slope = 1/3

and, using slope intercept form

y - 5 = 1/3 (x - 0)

y-5 = 1/3x

y = 1/3x + 5

Now, solving the equation for both table we get

x= 3 and y= 6

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The length of side LJ as shown in the similar shapes is 12.92.

Similar shapes are enlargements of each other using a scale factor.

To calculate the length of side LJ, we use the formula below

Formula:

From the diagram,

Given:

Substitute these values into equation 1 and solve for KL

Hence, the right option is 12.92.

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The expression -1  + (-4) is 4 units away from -1.

This can be solved using the concept of number line.

A number line is a visual representation of all real numbers placed on a straight line with an arbitrary point as the origin the origin is usually represented as zero and the numbers increase from left to right or from right to left

Another way is to  find how many units -1 + (-4) is from -1, we need to subtract -1 from -1 + (-4) this is done below

= -1 + (-4) - (-1)

= -1 - 4 + 1

= -4

we can say that, -1 + (-4 ) is 4 units away from -1.

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Answer: $0.07 and $0.08

Step-by-step explanation: 1. To find the price per square inch of a 16 inch pizza for $14, we need to first calculate the area of the pizza.

The formula for the area of a circle is A = πr^2, where r is the radius of the circle. In this case, the radius is half of the diameter, which is 8 inches.

So, the area of the pizza is A = π(8)^2 = 64π square inches.

The price per square inch is the total price divided by the area of the pizza:

Price per square inch = Total price / Area

Price per square inch = $14 / (64π) square inches

Price per square inch ≈ $0.07

Therefore, the price per square inch of a 16 inch pizza for $14 is approximately $0.07.

Answer: $0.07

2. Following the same method as above, for a 14 inch pizza for $12, the radius is 7 inches and the area is A = π(7)^2 = 49π square inches.

The price per square inch is:

Price per square inch = Total price / Area

Price per square inch = $12 / (49π) square inches

Price per square inch ≈ $0.08

Therefore, the price per square inch of a 14 inch pizza for $12 is approximately $0.08.

Answer: $0.08

The polar coordinates are solved the point is P ( 2 , π/4 )

Given data ,

Given the point P = (2, π/4) on the interval [-2π, 2π], here are two different representations of this point:

Cartesian Coordinates: (2, π/4)

In the Cartesian coordinate system, the point P is represented by its x and y coordinates. The x-coordinate is 2, and the y-coordinate is π/4.

Polar Coordinates: (2, 45°)

In polar coordinates, the point P is represented by its radius (distance from the origin) and angle. The radius is 2, and the angle is π/4, which is equivalent to 45 degrees.

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The cup of water reaches a temperature of 173 F after 4.5  minutes.

Temperature is a measure of the average kinetic energy of particles in a system. It is an important physical quantity used to describe the state of a system and is widely used in science, engineering, and everyday life. Temperature is a thermodynamic property of a system that shows how much energy is available to do work. In everyday terms, temperature is a measure of how hot or cold something is.

k = -0.2416

The equation for the cooling rate of the cup of water is:

T(t) = 203- 0.2416t

After 4.5 minutes, the temperature of the cup of water can be found by substituting t = 4.5 into the equation:

T(5) = 203- 0.2416(4.5 ) = 173.08 F

Therefore, the cup of water reaches a temperature of 173 F after 4.5 minutes.

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Annually: $822.49

Quarterly: $842.67

Weekly: $849.01

Daily: $850.98

Continuously: $853.39

Answer:

Step-by-step explanation:

x+y=5; x-y=3Adding both equations, we get:

2x = 8

x = 4Substituting the value of x in any of the equations:

x+y=5

4+y=5

y=1So the solution to this system of equations is: x=4, y=1.3x+y=11; y=x+3Substituting y=x+3 in the first equation:

3x+x+3=11

4x=8

x=2Substituting x=2 in the second equation:

y=x+3

y=2+3

y=5So the solution to this system of equations is: x=2, y=5.x+3y=0; 2x-y=-7Multiplying the second equation by 3 to eliminate y:

6x-3y=-21Adding both equations, we get:

7x=-21

x=-3Substituting x=-3 in the first equation:

x+3y=0

-3+3y=0

y=1So the solution to this system of equations is: x=-3, y=1.y=-3x-2; 6x+2y=-4Substituting y=-3x-2 in the second equation:

6x+2(-3x-2)=-4

6x-6x-4=-4

-4=-4This means that the two equations are equivalent and represent the same line. Therefore, there are infinitely many solutions to this system of equations.-4x+5y=27; x-6y=-2Multiplying the second equation by 5 to eliminate y:

5x-30y=-10Adding both equations, we get:

x-4x+5y-30y=-2+27

-x-25y=25

25y=-x-25

y=-(1/25)x-1Substituting y=-(1/25)x-1 in the first equation:

-4x+5(-(1/25)x-1)=27

-4x-5/5x-5=27

-9x=32

x=-32/9Substituting x=-32/9 in the expression for y:

y=-(1/25)(-32/9)-1

y=83/225So the solution to this system of equations is: x=-32/9, y=83/225.

Step-by-step explanation:

A diamond is a two-dimensional flat quadrilateral with four closed straight sides. A diamond is also called a rhombus because it's sides are of equal measure and because the inside opposite angles are equal. Diamonds are also considered to be parallelograms because their opposite sides are parallel to each other

The range of the given function is {y|y>9}. Therefore, option B is the correct answer.

The given function is f(x)=3x+9.

The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain.

Substitute x=0, 1, 2, 3, 4,....in y=3x+9, We get

When x=0

y=9

When x=1

y=12

When x=2

y=15

When x=3

y=18

So, the range is {9, 12, 15, 18,.....}

Therefore, option B is the correct answer.

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The probability a group will take their selfie exactly 3 times is 0.18.

We have,

The total groups = 100

The number of groups that took selfies 3 times = 18

Now,

The probability a group will take their selfie exactly 3 times.

= 18/100

= 0.18

Thus,

The probability a group will take their selfie exactly 3 times is 0.18.

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The expression is evaluated to 1/25. Option B

Index forms are simply described as distinct mathematical forms that are used in the representation of variables or numbers that are too large or too small in more convenient forms.

These index forms are also referred to as scientific notations or standard forms.

Some rules of index forms are;

From the information given, we have that;

1/5⁻²

Take the inverse power

1/25

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The 99% confidence interval for the population mean time spent on the internet, in minutes, is given as follows:

(48.9, 59.5).

The t-distribution is used when the standard deviation for the population is not known, and the bounds of the confidence interval are given according to the equation presented as follows:

[tex]\overline{x} \pm t\frac{s}{\sqrt{n}}[/tex]

The variables of the equation are listed as follows:

The critical value, using a t-distribution calculator, for a two-tailed 99% confidence interval, with 50 - 1 = 49 df, is t = 2.68.

The parameter values are given as follows:

[tex]\overline{x} = 54.2, s = 14, n = 50[/tex]

Then the lower bound of the interval is given as follows:

[tex]54.2 - 2.68\frac{14}{\sqrt{50}} = 48.9[/tex]

The upper bound of the interval is given as follows:

[tex]54.2 + 2.68\frac{14}{\sqrt{50}} = 59.5[/tex]

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The price per cup of salad dressing in a 2-pint bottle that costs $13.76 is $0.86.

To calculate the price per cup of salad dressing, we need to know that there are 2 cups in a pint. Therefore, there are 4 cups in a 2-pint bottle of salad dressing.

To find the price per cup, we divide the total cost of the bottle by the number of cups in the bottle.

$13.76 ÷ 4 cups = $3.44 per cup

Therefore, the price per cup of salad dressing is $0.86, which is obtained by dividing $3.44 by 4.

It is important to know the price per unit, whether it is per ounce, per pound, per liter, or per cup, to be able to compare the cost of different products accurately.

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Answer:

6x² + 19x + 15

Step-by-step explanation:

2x(3x+5)+3(3x+5)

= (3x + 5) (2x + 3)

= 6x² + 9x + 10x + 15

= 6x² + 19x + 15

So, the answer is 6x² + 19x + 15

We can start by simplifying the left side of the equation using the distributive property:

2x(3x+5)+3(3x+5) = (2x)(3x) + (2x)(5) + (3)(3x) + (3)(5)

= 6x^2 + 10x + 9x + 15

= 6x^2 + 19x + 15

Now we can compare this expression with the right side of the equation, which is a polynomial in x with unknown coefficients a, b, and c:

ax^2 + bx + c

Since the two sides are equal, their corresponding coefficients must be equal as well. This gives us a system of three equations in three unknowns:

a = 6 (the coefficient of x^2)

b = 19 (the coefficient of x)

c = 15 (the constant term)

Therefore, the solution to the equation 2x(3x+5)+3(3x+5)=ax^2+bx+c is:

2x(3x+5)+3(3x+5) = 6x^2 + 19x + 15

The value of the variable is -14

Fractions are simple defined as the part of a whole number or variable.

From the information given, we have that;

2x - 1/3 - 3x/4 = 5/6

Find the LCM, we have;

4(2x - 1) - 3(3x) /12 = 5/6

expand the bracket, we get;

8x - 4 - 9x/12 = 5/6

collect the like terms

-x - 4/12 = 5/6

cross multiply the values

-6x - 24 = 60

collect like terms

-6x = 84

make 'x' the subject

x = -14

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The standard deviation is approximately 24.28 units.

1. The standard deviation can be calculated using the formula for the normal distribution:

P(X > 250) = 0.05

Using a standard normal distribution table, we can find the corresponding z-score for a probability of 0.05, which is approximately 1.645.

z = (250 - 210) / σ

Solving for σ, we get:

σ = (250 - 210) / z = (250 - 210) / 1.645 = 24.28 units

Therefore, the standard deviation is approximately 24.28 units.




To determine the standard deviation of a normally distributed pollutant concentration in a lake, we first use the probability of exceeding 250 units (0.05) and a standard normal distribution table to find the corresponding z-score (1.645). Using this z-score and the given mean (210 units), we can solve for the standard deviation using the formula for the normal distribution. The resulting standard deviation is approximately 24.28 units.



The standard deviation is an important measure of variability in a dataset and can be calculated using the formula for the normal distribution. In this case, the standard deviation of a normally distributed pollutant concentration in a lake was calculated using the mean and probability of exceeding a certain value.

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The shot put is in the air for approximately 3 seconds.

The height h (in feet) of the shot put as a function of the time t (in seconds) after it is thrown can be modeled by the equation:

h(t) = h + vt - (1/2)gt²

where v is the initial vertical velocity in feet per second, and s is the initial height in feet.

Here, the initial vertical velocity is 40 feet per second, and the initial height is 5.69 feet. Therefore, we can plug in these values to get:

h = -16t² + 40t + 5.69

To find the time that the shot put is in the air, we need to find the value of t when h = 0, since the shot put will hit the ground when its height is 0.

Therefore, we can set the equation equal to 0 and solve for t:

0 = -16t² + 40t + 5.69

Using the quadratic formula, we get:

t = (-b ± √(b² - 4ac)) / 2a

where a = -16, b = 40, and c = 5.69.

Plugging in these values, we get:

t = (-40 ± √(40² - 4(-16)(5.69))) / 2(-16)

Simplifying, we get:

t ≈ 3 or t ≈ 0.2

Since the shot put cannot be in the air for negative time, the only possible answer is t ≈ 3.

Therefore, the shot put is in the air for approximately 3 seconds.

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The missing coordinate is equal to 15.

In Mathematics and Geometry, the slope of any straight line can be determined by using the following mathematical equation;

Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope (m) = rise/run

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

By substituting the given data points into the formula for the slope of a line, we have the following;

5/4 = (5 + 5)/(r - 7)

5/4 = 10/(r - 7)

5(r - 7) = 40

5r - 35 = 40

5r = 75

r = 75/5

r = 15.

Based on the information provided, the slope is the change in y-axis with respect to the x-axis and it is equal to 5/4.

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Complete Question:

The points (7,-5) and (r,5) lie on a line with slope 5/4. Find the missing coordinate

The number of horizontal asymptotes that graph of y = f(x) can have is (c) 2.

As x approaches negative infinity, the function f(x) approaches the horizontal-asymptote y = 0 because the term 1/x becomes negligible compared to other terms. This occurs in the portion of the function defined as 1/x when x < 0.

As x approaches positive infinity, the function f(x) approaches the horizontal-asymptote y = 2 because the term 2x becomes dominant compared to other terms. This occurs in the portion of the function defined as 2x - 1 when x ≥ 0.

Therefore, the graph of y = f(x) has two horizontal asymptotes: y = 0 as x approaches negative infinity and y = 2 as x approaches positive infinity. The correct answer is (c) 2.

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The given question is incomplete, the complete question is

How many horizontal asymptotes can the graph of y = f(x) have? (Select all that apply.)

f(x) = {1/x  ,   if  x<0,

     = {2x - 1 , if x≥0.

(a) 0

(b) 1

(c) 2

(d) 3

(e) 4

The calculated volumes of the figures are 2145.52 cubic meters, 697.19 cubic yards, 20587.81 cubic meters, 2639.40 cubic feet, 56.57 cubic km and 6387.60 cubic inches

The sphere 1

The volume is calculated as

V = 4/3πr³

Where

r = Radius = 8 meters

So, we have

V = 4/3 * 22/7 * 8³

Evaluate

Volume = 2145.52 cubic meters

The sphere 2

The volume is calculated as

V = 4/3πr³

Where

r = Radius = (11/2) yards

So, we have

V = 4/3 * 22/7 * (11/2)³

Evaluate

Volume = 697.19 cubic yards

The sphere 3

The volume is calculated as

V = 4/3πr³

Where

r = Radius = (34/2) meters

So, we have

V = 4/3 * 22/7 * (34/2)³

Evaluate

Volume = 20587.81 cubic meters

The hemisphere 4

The volume is calculated as

V = 2/3πr³

Where

r = Radius = 10.8 feet

So, we have

V = 2/3 * 22/7 * 10.8³

Evaluate

Volume = 2639.40 cubic feet

The hemisphere 5

The volume is calculated as

V = 2/3πr³

Where

r = Radius = 3 km

So, we have

V = 2/3 * 22/7 * 3³

Evaluate

Volume = 56.57 cubic km

The hemisphere 6

The volume is calculated as

V = 2/3πr³

Where

r = Radius = 29/2 in

So, we have

V = 2/3 * 22/7 * (29/2)³

Evaluate

Volume = 6387.60 cubic inches

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To find the slope of the line tangent to the graph of y = ln(1 - x) at x = -1, we can use the derivative of the function.

The derivative of y with respect to x can be found using the chain rule:

dy/dx = d/dx[ln(1 - x)] = 1 / (1 - x) * (-1) = -1 / (1 - x)

Substituting x = -1 into the derivative, we have:

dy/dx = -1 / (1 - (-1)) = -1 / 2

Therefore, the slope of the line tangent to the graph at x = -1 is -1/2.

The correct answer is (B) -1/2.

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According to the statement the probability of getting either a head or an even number on the die is 3/4.

To calculate the probability of getting a head or an even number, we can use the formula for the probability of the union of two events:
P(A ∪ B) = P(A) + P(B) - P(A ∩ B)
In this case, A represents getting a head, and B represents getting an even number on the die.
P(A) = Probability of getting a head = 1/2 (since there are two sides of the coin: heads and tails)
P(B) = Probability of getting an even number on the die = 3/6 (since there are three even numbers out of six possible outcomes: 2, 4, and 6)
P(A ∩ B) = Probability of getting both a head and an even number. Since these two events are independent, we can find this probability by multiplying the individual probabilities: P(A) * P(B) = (1/2) * (3/6) = 1/4
Now, we can find the probability of the union:
P(A ∪ B) = P(A) + P(B) - P(A ∩ B) = (1/2) + (3/6) - (1/4) = 1/2 + 1/2 - 1/4 = 3/4
So, the probability of getting either a head or an even number on the die is 3/4.

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The factorization of the given expression, a² - b², is (a + b)(a - b)

From the question, we are to factorize the given expression.

From the given information, the given expression is

a² - b²

This is a special case in the factorization of polynomials. This is called difference of two squares.

Given the expression

x² - y²

The above expression can be written in the factorized form as

(x + y)(x - y)

Check:

Check by expanding the above factored form

(x + y)(x - y)

Applying the distributive property

x(x - y) + y(x - y)

x² - xy + xy - y²

Simplify further

x² - y²

Thus,

x² - y² = (x + y)(x - y)

In the same manner,

a² - b² = (a + b)(a - b)

Hence, the factorization of a² - b² is (a + b)(a - b)

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