Which statement is true?

The equation –3|2x + 1.2| = –1 has no solution.
The equation 3.5|6x – 2| = 3.5 has one solution.
The equation 5|–3.1x + 6.9| = –3.5 has two solutions.
The equation –0.3|3 + 8x| = 0.9 has no solution

Answer:

No sé la respuesta, pero traduce esto: D

Step-by-step explanation:

It cannot be determined. At least one other point on the line is needed to determine if x is proportional to y

Given data ,

A point on a straight line has an x-coordinate of 3 and a y-coordinate of 6

Now , A single point on a straight line does not define the connection between x and y. We must evaluate the connection between x and y for several places on the line in order to establish if x is proportional to y.

As a result, the relationship between x and y cannot be inferred only from the supplied location (3, 6). To establish the proportionality between x and y, at least one more point on the line is required

Hence , the equation of line is solved

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Answer:

Step-by-step explanation:

x = 150

1/3 x =  50

x -20 = 30

x -10 = 140

Are u ok ????

Answer:

8/9

Step-by-step explanation:

This 0.888... as a fraction is 8/9. Any number over 9, the decimal is going to a repeating number.

Answer:

8/9

Step-by-step explanation:

10x = 8.88..

-   x = 0.88

9x = 8

= 8/9

Answer:

(1) -27

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer: 10:15

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Answer:

78kg

Step-by-step explanation:

76×5= 380kg

380-72-74-75-81= 78kg

There are no perfect cubes between 4^3 = 64 and 5^3 = 125. Therefore, no full m-ary tree with 84 leaves and height 3 exists.

We can show that no full m-ary tree with 84 leaves and height 3 exists as follows:

A full m-ary tree with height 3 has 1 + m + m^2 nodes (including the root). If we let the number of leaves be L, then we have:

L = m^3

Since we want L = 84, we need to find a positive integer m such that m^3 = 84. However, this equation has no integer solutions. To see this, we can note that 84 is not a perfect cube, and we can check that there are no perfect cubes between 4^3 = 64 and 5^3 = 125. Therefore, no full m-ary tree with 84 leaves and height 3 exists.

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A sailboat is traveling east form a point p at a rate of 20 km/hr and a motorized boat starts 300 km north of point p and is traveling south at a rate of 35 km/hr. The distance between the boats changing 3 hours later is 37.55 km/hour.

In the given question,

A sailboat is traveling east form a point p at a rate of 20km/hr.

A motorized boat starts 300 km north of point p and is traveling south at a rate of 35 km/hr.

We have to find how fast the distance between the boats is changing 3 hours later.

Solution

Given that

x=20(3)=60

y=300+(35)(3)=405

Using Pythagoras theorem

X^2+y^2=z^2

z = √60^2+405^2

z=409.5

We also have dx/dt=20 and dy/dt=300

Using

X^2+y^2=z^2

Differentiate w.r.t time

d/dt (x^2) + d/dt (y^2) = d/dt (z^2)

2xdx/dt+2ydy/dt = 2zdz/dt

dz/dt = 1z(xdx/dt+ydy/dt)

dz/dt = 1/409.5(60(20)+35(405))

dz/dt = 37.5

Distance is changing 37.55 km/hour.

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Ground-state electron configuration of gas-phase Co²+ is [Ar] 3d⁷. Answer: (E) [Ar] 3d⁷.Explanation: First of all, we need to find the electron configuration of Cobalt (Co).

The electron configuration of Cobalt (Co) is 1s²2s²2p⁶3s²3p⁶4s²3d⁷.Now, we can remove the electrons to get the electron configuration of gas-phase Co²+ .Co: 1s²2s²2p⁶3s²3p⁶4s²3d⁷Co²+: 1s²2s²2p⁶3s²3p⁶3d⁷The full electron configuration of Co²+ will be [Ar] 3d⁷. Therefore, the answer is (E) [Ar] 3d⁷.

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The total area of the trampoline runways is 18 + 5√6 square meters.

To find the area of each trampoline runway, we need to multiply the width by the length:

The area of the first trampoline runway is √3 meters wide x 6√3 meters long = 18 square meters.

The area of the second trampoline runway is √3 meters wide x 5√2 meters long = 5√6 square meters.

To find the total area of the trampoline runways, we simply need to add the areas of the two runways:

Total area = 18 square meters + 5√6 square meters

Total area = 18 + 5√6 square meters (we cannot simplify this further)

Therefore, the total area of the trampoline runways is 18 + 5√6 square meters.

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The F: Z → Z by the rule F(n) = 2 – 3n, for each integer n is:

(i) F is one-to-one.

(ii) F is not onto.

(i) To determine if F is one-to-one, we need to show that for any integers \(n_1\) and \(n_2\), if \(F(n_1) = F(n_2)\), then \(n_1 = n_2\).

Given F(n) = 2 - 3n, let's suppose \(F(n_1) = F(n_2)\):

\(2 - 3n_1 = 2 - 3n_2\)

By simplifying this equation, we can see that the constants on both sides cancel out:

\(-3n_1 = -3n_2\)

Dividing both sides by -3, we get:

\(n_1 = n_2\)

Since \(n_1\) and \(n_2\) are equal, we can conclude that F is one-to-one.

(ii) To determine if F is onto, we need to show that for any integer m, there exists an integer n such that F(n) = m.

Let's consider the counterexample given: m = 0.

For F(n) = 2 - 3n, if we substitute m = 0, we have:

2 - 3n = 0

Simplifying this equation, we find:

3n = 2

Dividing both sides by 3, we get:

n = 2/3

However, 2/3 is not an integer. Therefore, there is no integer n that satisfies F(n) = 0.

Since we found a counterexample where F(n) = 0 does not have an integer solution, we can conclude that F is not onto.

In summary:

(i) F is one-to-one.

(ii) F is not onto.

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Answer:

5d+4

Explanation:

d= her daughters age

Answer:

x = 1

Step-by-step explanation:

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

John must score 286 on his 8th game to achieve an average score of 215.

What is an Average?

Average, also known as the mean, is a mathematical concept that represents the central value of a set of numbers. It is found by dividing the sum of the numbers by the total count of the numbers.

To find out what John must score on his 8th game to achieve an average score of 215, we need to use the formula for calculating the average or mean:

Average = (Sum of Scores) / (Number of Scores)

We can use this formula to solve for the unknown score:

215 = (159 + 182 + 225 + 240 + 198 + 200 + 230 + x) / 8

Multiplying both sides by 8, we get:

1720 = 159 + 182 + 225 + 240 + 198 + 200 + 230 + x

Simplifying, we get:

1720 = 1434 + x

Subtracting 1434 from both sides, we get:

x = 286

Therefore, John must score 286 on his 8th game to achieve an average score of 215.

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Answer:

the probability that the mean number of pieces in a sample of 28 scoops is more than 350 pieces is approximately 0.0228

Step-by-step explanation:

To find the probability that the mean number of pieces in a sample of 28 scoops is more than 350 pieces, we can use the normal distribution.

The standard error of the mean for a sample of size 28 is the standard deviation of the population divided by the square root of the sample size, or 16 / sqrt(28) = 2.8.

This means that the distribution of the sample means is approximately normally distributed with a mean of 344 pieces and a standard error of 2.8 pieces.

To find the probability that the sample mean is more than 350 pieces, we can use the cumulative distribution function of the normal distribution. In this case, we want to find the probability that a normally distributed random variable is greater than 350.

Using a normal distribution calculator or table, we can find that the probability that a normally distributed random variable with a mean of 344 and a standard error of 2.8 is greater than 350 is approximately 0.0228.

Therefore, the probability that the mean number of pieces in a sample of 28 scoops is more than 350 pieces is approximately 0.0228.

Answer:

(-2, 3)

Step-by-step explanation:

x coordinate: Look at the x axis (horizontal one) and see that the point is at -2 for x.

y coordinate: Look at the y axis (vertical) and the point is at 3 for y.

Therefore, the answer is (-2, 3)

Answer:

168 girls

Step-by-step explanation:

126 boys and 168 girls.

Answer:

The answer should be 168 female students.

Step-by-step explanation:

Since the ratio of males to females is 6:8 and there's 126 male students, by dividing 126 by 6 you can get 21 then using that 21 you can multiply it by 8 to find how many female students there are which is 168 and dividing 126:168 by 21 you can get 6:8.

126 divided by 21=6

168 divided by 21=8

A person weighing 173 pounds can burn 10.7 calories per minute.

The given equation is ŷ=2.2+0.05x.

To solve this question, we can use the equation given, ŷ=2.2+0.05x. We can insert the known weight value, 173 pounds, to calculate the anticipated calories burned per minute.

y = 2.2 + 0.05x

y = 2.2 + 0.05 × 173

y = 10.7

Therefore, a person weighing 173 pounds can burn 10.7 calories per minute.

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"Your question is incomplete, probably the complete question/missing part is:"

By observing a set of data values, Thomas used a calculator for the weight (in pounds) and predicted the number of calories burned per minute to get an equation for the least-squares line: ŷ=2.2+0.05x

Based on the information gathered by Thomas, select the statement that is true.

a) A person weighing 149 pounds can burn 9.8 calories per minute.

b) A person weighing 134 pounds can burn 8.9 calories per minute.

c) A person weighing 125 pounds can burn 8.3 calories per minute.

d) A person weighing 173 pounds can burn 10.7 calories per minute.

Answer:

A person weighing 134 pounds can burn 8.9 calories a minute.

Step-by-step explanation:

The technique used by an aerodynamic particle sizer to measure the amount of particles in the air is laser diffraction. Option A is answer.

Laser diffraction is a commonly employed technique in aerosol science and particle analysis. It works by passing a laser beam through a sample containing airborne particles. As the laser beam interacts with the particles, it undergoes diffraction, resulting in scattering patterns. These scattering patterns are then analyzed to determine the size distribution of the particles.

By measuring the intensity and angle of the scattered light, the aerodynamic particle sizer can calculate the size of the particles and provide information about their concentration in the air.

Option A is answer.

""

laser diffraction

laser refraction

laser reflection

laser diversion

""

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The cross sectional area from the sphere will be greater (option c).

Let's start with the sphere. When a sphere is cut by a plane along a diameter, the resulting shape is a circle. The diameter of the sphere is 10 inches (twice the radius), so the circle that is created has a diameter of 10 inches. We can use the formula for the area of a circle (A = πr²) to determine its area. Since the radius is 5 inches, the area of the circle is:

A = π(5²) = 25π square inches

Now, let's move on to the cube. When a cube is cut vertically, we are essentially cutting through one of its faces. The resulting shape is a square with a side length of 10 inches (since the length of the cube is 10 inches).

We can use the formula for the area of a square (A = s²) to determine its area. Since the side length is 10 inches, the area of the square is:

A = 10² = 100 square inches

Hence the correct option is (c).

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Complete Question:

A sphere of radius 5 in is cut by a plane along a diameter and a cube of length 10 in is cut vertically. Which is true about their resulting cross-sectional areas?

(a) The cross sectional areas will be equal

(b) The answer cannot be determined

(c) The cross sectional area from the cube will greater

(d) The cross sectional area from the sphere will be greater

Answer: Well we can look at whether or not cubes may or may not equal the same by using volume and surface area, where the volume can be used as x^3 and the surface area x^2, but the reason why polynomials can help us a great deal in world problems is whether or not measurements are accurate, or just in general for solving big math equations. Hope this helps.

Answer:

Two expressions for the area are;

i) x/3 + 2·y + 6

ii) (1/3) × (x + 6·y + 18)

Step-by-step explanation:

The given dimension of the rectangle are;

The height of the rectangle, h = 1/3

The width of the smallest rectangle, w₁ = x

The width of the med sized rectangle, w₂ = 6·y

The width the large rectangle, w₃ = 18

The area, 'A', of the entire rectangular figure, the big rectangle, can be expressed as follows;

A = A₁ + A₂ + A₃

Where;

A₁ = The area of the smallest rectangle

A₂ = The area of the mid sized rectangle

A₃ = The area of the large rectangle

∴ A = (1/3) × x + (1/3) × 6·y + (1/3) × 18 = x/3 + 2·y + 6

The area of the big rectangle. 'A', can also be found as follows;

A = (1/3) × (x + 6·y + 18)

Therefore, two expressions for the area of the big rectangle are;

x/3 + 2·y + 6 and (1/3) × (x + 6·y + 18).

Answer:

x = \(\frac{\sqrt{22} }{2}\)

Step-by-step explanation:

Using the Pythagorean Theorem we can solve this problem.

The legs of the triangle will be the same (the dashes in the middle of the line indicates they are the same).

The Pythagorean Theorem will look like this:

\(a^{2}+a^{2} = (\sqrt {11})^{2}\)

Now, let's find a:

\(2a^{2} = 11\)                The square of a radical will be whatever is under the arch

\(a^{2}=\frac{11}{2}\)                  Divide 11 by 2

\(\sqrt{a^{2} } = \sqrt{\frac{11}{2} }\)           Square root both sides

a = \(\frac{\sqrt{22} }{2}\)

Therefore, the length of side x is equal to \(\frac{\sqrt{22} }{2}\).

Hope this helps!!

The function, p(x) = cos²x/ sin 2x  has a limit that is undefined (does not exist) as x approaches 0.

The correct option therefore option b;

b. As x approaches 0, the limit of p(x) does not exist

Here, we have,

We have,

The given function is presented as follows;

p(x) = cos²x/ sin 2x

Required;

The limit of the function as x approaches (zero) 0

we have,

The limit of a function at a given point within the domain of the function is the value of the function as the function's argument approaches a.

Therefore, the limit of the given function at the point x = 0 is given by the function's value as the argument of the function, x approaches 0.

cos²(0) = 1

sin(2×0) = sin(0) = 0

Therefore;

p(x) = cos²0/ sin 2(0) = infinity

Therefore, the limit of the function does not exist as x approaches 0

The correct option is therefore, option b

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Answer:

67

Step-by-step explanation:

Because 180-113 is 67.

Answer:

67°

Step-by-step explanation:

A line is 180° so subtract the 113°

180 - 113 = 67°

hope that helps and have a great day :D

To understand this problem, it is important to first identify the key information provided in the question. The key information in this problem is that there were 13 fans at the basketball game and that the home team had five more fans than the visiting team.

Based on this information, we can determine that the number of fans for the home team can be represented by the expression "\(2x + 5 = 13\)" or 8 fans. Since the visiting team had three fewer fans than the home team, we can represent the number of fans for the visiting team by the expression "\(8\div2\)" or 4 fans.

Therefore, the visiting team had 4 fans at the basketball game. To solve the problem, we need to find the value of this expression: "\(8 \div2\)" or 4 fans.

The answer will be option A Yes, the test value is in the rejection region.

A Z-score is a numerical measurement that describes a value's relationship to the mean of a group of values.

here the formula will be

\(Z=\dfrac{X-\mu}{\dfrac{\sigma}{\sqrt {n}}}\)

\(Z=\dfrac{100-110}{\dfrac{5}{\sqrt{100}}}\)

\(Z=-20\)

Z critical value =-1.645

Z calculated> Z critical value so we will reject.

Hence the answer will be option A Yes, the test value is in the rejection region.

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