I need help guys like rn please someone!!

Answer:

-2x+4r = 4 i think

Step-by-step explanation:

Answer:

18 sides

Step-by-step explanation:

Exterior angle = 360° ÷ n

20° = 360°/n

n× 20 = 360/n ×n

20n = 360

n= 360/20

n = 18

Answer:

4.768×10^3

Step-by-step explanation:

4768 in standard form:

4.768 *10^3

It already is in standard form.

The volume of the ring-shaped solid is 490.67 cubic units.

To find the volume of the ring-shaped solid that remains after using a cylindrical drill to bore a hole through the center of a sphere, we can subtract the volume of the drilled cylinder from the volume of the sphere.

The volume of a cylinder is given by the formula V_cylinder = πr^2h, where r is the radius and h is the height. In this case, the radius of the cylinder is 1.

The height of the cylinder can be calculated as the diameter of the sphere, which is twice the radius of the sphere. So, the height of the cylinder is 2 × 5 = 10.

Using the formula for the volume of the cylinder, we have V_cylinder = π(1^2)(10) = 10π.

The volume of a sphere is given by the formula V_sphere = (4/3)πr^3, where r is the radius. In this case, the radius of the sphere is 5.

Using the formula for the volume of the sphere, we have V_sphere = (4/3)π(5^3) = (4/3)π(125) = (500/3)π.

To find the volume of the ring-shaped solid, we subtract the volume of the cylinder from the volume of the sphere:

V_ring = V_sphere - V_cylinder = (500/3)π - 10π = (500/3 - 30/3)π = (470/3)π.

Rounding the answer to the nearest hundredth, we get V_ring ≈ 490.67 cubic units.

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The parameter is the average number of hours of study time for the entire population of state university students. A parameter is a numerical measurement describing some characteristics of a population.

In this case, the population is the state university students, and the parameter is the average number of hours of study time that they spend each week. When we estimate the average number of hours of study time each week to be 30 ± 2 based on an epsem sample of 300 state university students, we are creating a sample statistic. A sample statistic is a numerical measurement describing some characteristics of a sample. In this case, the sample is the 300 state university students, and the sample statistic is the estimated average number of hours of study time that they spend each week.The sample statistic provides us with information about the population parameter. We can use the sample statistic to make inferences about the population parameter. However, we need to take into account the variability of the sample statistic when making inferences about the population parameter. The sample statistic can be influenced by random sampling variation, which can cause it to be different from the population parameter. Therefore, we need to use inferential statistics to make inferences about the population parameter based on the sample statistic.

In conclusion, the parameter in this example is the average number of hours of study time for the entire population of state university students. The sample statistic is the estimated average number of hours of study time based on the sample of 300 state university students. We can use inferential statistics to make inferences about the population parameter based on the sample statistic.

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Answer:

≈11.7 [ft].

Step-by-step explanation:

1) the ladder and the wall form the right triangle, where the length of the ladder (12 ft) is hypotenuse and the distance between the base of the latter and the base of the wall is the shortest side.

2) the longest side can be calculated according the Pythagoras theorem:

\(L=\sqrt{12^2-2.8^2}=\sqrt{136.16}=11.7[ft].\)

On a circle with a radius of 4 and center at (0, 0), to find the x and y coordinates at an angle of 180 degrees (or π in radian measure), we can use the trigonometric functions.

At 180 degrees, the x-coordinate will be 0, as it lies on the y-axis. The y-coordinate can be found by using the sine function.  Using the equation y = r * sin(θ), where r is the radius and θ is the angle in radians, we can substitute the values. In this case, r is 4 and θ is π (since 180 degrees equals π radians).

Therefore, the x-coordinate is 0 and the y-coordinate is 4 * sin(π) = 0. So, the x-coordinate is 0 and the y-coordinate is also 0.
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Answer:

Part A: Non linear

Part B: Yes

Part C: The y-intercept is (0, 0), represent the starting height level of the golf ball

Part C: The solution are the points (0, 0) and (100, 0) which are the points at which the golf ball touches the ground

Step-by-step explanation:

Part A: The shape of the path of the increase in the height of the the golf ball as it moves in increasing horizontal distance from the starting point is hat of a parabola

Part B: The graph is a function because each value of the independent variable, distance (ft.) maps to exactly one value of the dependent variable, elevation (ft.)

Part C: The y-intercept represents the starting or initial value of the function, where x = 0. It represents the height from which the golf ball motion path starts

Part D: The solution represents the values of the x-intercept at which the elevation is the y = 0.

Answer:

Step-by-step explanation:

Y=-2/3x-2

I cant truly graph it but the coordinates would be (0,-2) (3,-4) (6,-6) (9,-8)

When different amounts of ice is added to four samples of water, the independent variable is the amount of ice cubes added.

All the four samples of water is in room temperature as nothing mentioned about the initial temperature of the water sample, therefore it is not a variable here.

Similarly amount of time is constant in all cases which is 30 minutes. Thus amount of time is also not a variable of concern here.

The final temperature of the four samples of water is now depended on the amount of ice added, so it is a dependent variable. Thus only the amount of ice added which is not dependent on any other factors is the independent variable here.

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Answer:

2 is 8

Step-by-step explanation:

if you look at 4 on the x axis and go up until you find the dot you'll see it equals 8

Answer:  A. x= 12 and -2

Step-by-step explanation:

x-5= 7  Solve for positive answer

x= 7+5=12

x-5= -7 Solve for negative answer

x= -7+5=-2

There are several characteristics that, on their own, do not prove that a quadrilateral PQRS, drawn on a coordinate plane, is a parallelogram.  None of these characteristics individually guarantee that the quadrilateral is a parallelogram.

These characteristics include having equal side lengths, having congruent opposite angles, having a pair of parallel sides, and having diagonals that bisect each other.

While having equal side lengths is a characteristic of a parallelogram, it is not sufficient to prove that PQRS is a parallelogram. The quadrilateral may still have other properties that invalidate it as a parallelogram, such as non-parallel opposite sides or unequal opposite angles.

Having congruent opposite angles is another characteristic of a parallelogram. However, this alone does not guarantee that PQRS is a parallelogram. It is possible for a quadrilateral to have congruent opposite angles while lacking parallel sides or other defining properties of a parallelogram.

Having a pair of parallel sides is a strong indication that a quadrilateral is a parallelogram. However, it is not enough to establish it definitively. The quadrilateral may still have other properties that contradict the definition of a parallelogram, such as unequal side lengths or diagonals that do not bisect each other.

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Which characteristics will not prove that quadrilateral is a coordinate plane or it is a parallelogram?.

Omar's cat's claws will grow 3/2 inch (or 1.5 inches) in one year.

To find the amount by which Omar's cat's claws will grow in one year, we need to multiply the growth rate per 1/12 of a year by the number of 1/12-year intervals in one year.

Given that Omar's cat's claws grow 1/8 inch in 1/12 of a year, we can find the growth in one year as follows:

Growth in one year = (Growth rate per 1/12 of a year) * (Number of 1/12-year intervals in one year)

Growth in one year = (1/8 inch) * (12 intervals)

Growth in one year = 1/8 inch * 12

Growth in one year = 12/8 inch

Now, we can simplify the fraction:

Growth in one year = 3/2 inch

So, Omar's cat's claws will grow 3/2 inch (or 1.5 inches) in one year.

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Answer:

c

Step-by-step explanation:

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Answer:

its the one you have clicked in the pic E

Step-by-step explanation:

Answer:

8*(3x-4y)

Step-by-step explanation:

Just did the test

Answer:

110

Step-by-step explanation:

The percent yield is calculated as the ratio of the actual yield to the theoretical yield, multiplied by 100.

Percent yield is a measure of how efficient a chemical reaction or process is in producing the desired product.

The formula for percent yield is:

Percent Yield = (Actual Yield / Theoretical Yield) * 100

The actual yield is the amount of product obtained from the reaction or process, typically measured in grams or moles. It represents the actual amount of product obtained in the laboratory.

The theoretical yield, on the other hand, is the maximum amount of product that can be obtained based on stoichiometry and other factors. It is calculated using balanced chemical equations and the starting amounts of reactants.

By dividing the actual yield by the theoretical yield and multiplying by 100, we get the percent yield, which is expressed as a percentage.

This value provides insight into the efficiency of the reaction or process, with a higher percent yield indicating a more efficient conversion of reactants into products.

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The speed of the moving body that is being referred to here is 80 kilometer per hour.

The given problem is a straightforward one based on the idea of the universal law of motion. According to the universal law of motion, any uniformly traveling body's distance traveled is determined by the product of its speed and the time elapsed. Distance is calculated as speed * time. Therefore the body is going at a speed of 80 kilometers per hour, according to the same relation as above, assuming that it is moving at a constant speed.

                                \(Distance = speed * time\)

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Answer:

8000000 grams

Step-by-step explanation:

8,000kg=8,000,000kg

Answer:

Thus, the factors of (x2−x−90) are (x−10) and (x+9) or (x−10)(x+9)

Step-by-step explanation:

Answer:

8.9

Step-by-step explanation:

By pythagoras theorem, a² + b² = c²

8² + 4² = c²

64 + 16 = c²

c² = 80

c = √80

c = 8.9

Answer:

√80

Step-by-step explanation:

To find the sides of a right triangle, note that we can use the Pythagorean Theorem ---> a² + b² = c² where a and b are the legs and c is the hypotenuse of the triangle. We are already given the measurements of both legs and are asked to find the hypotenuse, so, plug in the known values into the Pythagorean Theorem and solve for c:

4² + 8² = c²

16 + 64 = c²

80 = c²

√80 = c

The equation which can be used to determine p is 7.75 + 27.25p = 89.50, then the number of people who can go to the amusement park is 3

The total amount that they have to spend on parking and admission = $89.50

The parking cost = $7.75

The ticket cost including tax = $27.25

Consider the number of people who can go to amusement park as p

Then the equation will be

7.75 + 27.25p = 89.50

Subtract both side of the equation by 7.75

27.25p + 7.75 - 7.75 = 89.50 - 7.75

27.25p = 81.75

Divide both side of the equation by 27.25

27.25p / 27.25 = 81.75 / 27.25

p = 3

Hence, the equation which can be used to determine p is 7.75 + 27.25p = 89.50, then the number of people who can go to the amusement park is 3

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The function that represents surviving people are X = 2m - d

Given that there are m married couples and d of the 2m of these couples have died, the total people that remain is expressed as:

Total people remaining = Total married couple - those that died

Total married couple = 2m

Total people that died = d

Taking the difference to get the remaining people;

Total people remaining = 2m - d

Hence the function that represents surviving people are X = 2m - d

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Answer:

Expression 1 is equal to B

Expression 2 is equal to A

Expression 3 is equal to C

Step-by-step explanation:

Step 1: Simplify 1st expression

3x² - 7x + 14 + 5x² + 4x - 6

8x² - 3x + 8

Step 2: Simplify 2nd expression

2x² - 5x - 3 - 10x² + 2x + 7

-8x² - 3x + 4

Step 3: Process of Elimination

Expression 1 is equal to B

Expression 2 is equal to A

Expression 3 is equal to C

When the switch is closed, the potential difference across the resistor R connected to a secondary coil of a transformer is influenced by the turns ratio (n2 > n1). In this scenario, the number of turns in the secondary coil (n2) is greater than the number of turns in the primary coil (n1). This results in a step-up transformer, which increases the voltage across the resistor R in the secondary circuit.

When the switch is closed, a current flows through the primary coil of the transformer, which creates a changing magnetic field. This changing magnetic field induces a voltage in the secondary coil of the transformer, which is connected to resistor R. The ratio of the number of turns in the secondary coil to the number of turns in the primary coil is given by the turns ratio, which is represented by n2/n1.
Since the potential difference across a resistor is given by Ohm's law (V = IR), the potential difference across resistor R is proportional to the current flowing through it. Therefore, when the potential difference across resistor R connected to the secondary coil of the transformer is n2 > n1, it means that the current flowing through the secondary coil is greater than the current flowing through the primary coil. This is because the voltage induced in the secondary coil is greater than the voltage applied to the primary coil due to the turns ratio of the transformer.
When the switch is closed, the potential difference across the resistor R connected to a secondary coil of a transformer is influenced by the turns ratio (n2 > n1). In this scenario, the number of turns in the secondary coil (n2) is greater than the number of turns in the primary coil (n1). This results in a step-up transformer, which increases the voltage across the resistor R in the secondary circuit.

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Answer:

m=4(subsitute m=4)

Step-by-step explanation:

The dimensions of the vegetable garden are :

Length = 14 feet

Width = 11 feet

Let's start by using the formula for the area of a rectangle:
Area = Length x Width

We know that the area of the vegetable garden is 154 square feet, so we can plug that in:
154 = Length x Width

Next, we're given that the length is 3 feet longer than the width, so we can write:
Length = Width + 3

We can substitute that expression for Length into the area formula:
154 = (Width + 3) x Width

Expanding the brackets:
154 = Width^2 + 3Width

Now we have a quadratic equation, which we can solve by either factoring or using the quadratic formula. I'll use the quadratic formula here:

First, we need to put the equation into standard form (ax^2 + bx + c = 0):
Width^2 + 3Width - 154 = 0

a = 1, b = 3, c = -154

Plugging those values into the quadratic formula:
Width = (-b ± sqrt(b^2 - 4ac)) / 2a
Width = (-3 ± sqrt(3^2 - 4(1)(-154))) / 2(1)
Width = (-3 ± sqrt(625)) / 2

We can simplify the square root:
Width = (-3 ± 25) / 2

So we have two possible solutions:
Width = 11 or Width = -14

Since we're dealing with a physical garden, the width can't be negative, so we'll discard that solution.

Now we can use the expression for Length that we found earlier:
Length = Width + 3
Length = 11 + 3 = 14

So the dimensions of the vegetable garden are 11 feet by 14 feet.

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Answer:

The foci for the following ellipse are incorrect

Step-by-step explanation:

Given equation: \(7x^2+8y^2=30\)

Divide whole equation by 30

So, \(\frac{x^2}{\frac{30}{7}}+\frac{y^2}{\frac{30}{8}}=1\)

General equation of ellipse: \(\frac{(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}\)

On comparing\(a =\frac{30}{7}\)

\(b = \frac{30}{8}\\c^2=a^2-b^2\\c=\sqrt{a^2-b^2}\\c=\sqrt{(\frac{30}{7})^2-(\frac{30}{8})^2}\\c=\frac{15\sqrt{15}}{28}\)

So,the foci for the following ellipse are incorrect

If \(3x-4\) is a factor of \(p(x)=-6x^3-7x^2+qx-12\), then \(x=\frac43\) is a root of \(p(x)\) so that \(p\left(\frac43\right)=0\):

\(-6\left(\dfrac43\right)^3-7\left(\dfrac43\right)^2+q\left(\dfrac43\right)-12=0\)

\(\dfrac{4q-116}3=0\)

\(4q-116=0\)

\(4(q-29)=0\)

\(\implies\boxed{q=29}\)