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Answer: Statements 1, 3, and 4 are not true. The sum, difference, and quotient of two negative integers can be positive, negative, or zero, depending on the values of the two integers. For example, the sum of -5 and -7 is -12, which is a negative number. The difference of -5 and -7 is 2, which is a positive number. The quotient of -5 and -7 is -0.7142857142857143, which is a negative number.

Only statement 2 is true. The product of two negative integers is always a positive number. For example, the product of -5 and -7 is 35, which is a positive number. This is because the two negative signs "cancel out" when multiplying two numbers, resulting in a positive product.

True , statistical measures that communicate the most information should be used with scales that contain the most information.

Given :

statistical measures that communicate the most information should be used with scales that contain the most information. true  or false .

we know that ,

What is statistical measures ?

The mean, median, mode, percentiles, range, variance, and standard deviation are the most commonly used numerical measures for quantitative data.

So the statistical measures that must communicate the most information should be used with scales that contain the most information for knowing the details of the given data .

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The equation of  the parabola will be y = -1/8[tex]x^{2}[/tex].

A right circular cone and a plane perpendicular to one of the cone's elements cross to form a parabola, also known as an open curve.

Y = a(x - h)2 + k or x = a(y - k)2 + h is the general equation of a parabola. The vertex is shown here as (h, k).

The parabola's y= value is provided to us.

When we mirror this parabola along the x-axis, we scale the resulting image vertically by a factor of 1/8.

Then we get y = -1/8[tex]x^{2}[/tex]

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Answer: x= 6/5

Step-by-step explanation:

Let an unknown number be x

5x - 2 = 4

5x = 6

x= 6/5

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Answer:

-2 = x 4-2 square units

Step-by-step explanation:

sum = as per as chart

Answer:$26.6

Step-by-step explanation:

Answer:

= 26.6

Step-by-step explanation:

38 * 20/100 = 38 *1/5 = 7.6

38 - 7.6 = 30.4

38 * 10/100 = 38 *1/10 = 3.8

30.4 - 3.8 = 26.6

The unknown angle in the triangle is as follows:

∠E = 100 degrees.

The sum of angles in a triangle is 180 degrees.

In the diagram, BCD is cut by transversal ACE , AB and perpendicular to BCD and CE ≅ ED.

Therefore,

∠ACB = 180 - 50 - 90 (sum of angles in a triangle)

∠ACB = 180 - 140

∠ACB = 40 degrees

Therefore,

∠ACB ≅ ∠DCE

Hence,

∠DCE = 40 degrees.

Triangle CDE is an isosceles triangle since CE ≅ DE.

Hence,

∠CDE = 40 degrees

∠E = 180 - 40 - 40

∠E = 180 - 80

∠E = 100 degrees.

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Answer:

Slope is 1, since we use rise over run which is expressed as 1/1

The 480 chairs were all finished by the employees in 4 days while maintaining a steady pace.

Time and work deals with the time taken by an individual or a group of individuals to complete a piece of work and the efficiency of the work done by each of them.

Work Done = Time Taken × Rate of Work.

Rate of Work = 1 / Time Taken.

Time Taken = 1 / Rate of Work.

If a piece of work is done in x number of days, then the work done in one day = 1/x.

Total Work Done = Number of Days × Efficiency.

Here,

Total number of chairs=480

Chairs left to work on=120

It took them 3 days to install 360 chairs which means if they were working at a constant rate they got 120 chairs installed daily.

With 120 chairs left that means in 1 days they will finish.

So overall, it took the workers 4 days to finish.

The workers took 4 days to complete all the 480 chairs from start to finish at a constant rate.

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Answer: The number is 12

Step-by-step explanation:

Let x= the number that is unknown

The sum of three and a "number"= 3+"x"

Divided by three, means that x+3 is divided by 3

Is five, means that (x+3)/3=5

Algebra:

[tex]\frac{x+3}{3}=5[/tex]

Multiply by 3 to arrive at x+3=15

Subtract both sides by 3, then x=12

Answer:

108

324

12

and 54

Step-by-step explanation:

Answer: C≈28.27cm

Step-by-step explanation:

C=2πr=2·π·4.5≈28.27433cm

Answer:

  28.3 cm

Step-by-step explanation:

You want the circumference of a circle with radius 4.5 cm.

The circumference of a circle is given by ...

  C = 2πr

For the given circle, the circumference is ...

  C = 2π(4.5 cm) = 9π cm ≈ 28.3 cm

The circumference is about 28.3 cm.

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Answer:

Step-by-step explanation:

wait

Answer:

[tex]\huge\boxed{\sf k = 3}[/tex]

Step-by-step explanation:

[tex]5+6i+(-2+ki)=3+9i\\\\5 + 6i-2+ki=3+9i\\\\Combine \ like \ terms\\\\5-2+6i+ki=3+9i\\\\3+(6+k)i=3+9i\\\\Comparing \ both \ sides\\\\6 + k = 9\\\\Subtract \ 6 \ both \ sides\\\\k = 9-6\\\\k = 3\\\\\rule[225]{225}{2}[/tex]

Therefore the solution to this question of 2 pulleys is )16 rpm

b)360 rad/min  c)39.6 rad/min d) 7200cm/min

A pseudovector used in physics to express how quickly an object's angular position or orientation changes over time is called an angular velocity, rotational velocity, or angular frequency vector.

For the smaller pulley, it does 48 rpm (revolutions per minute) each revolution is 360 degrees. This indicates that the pulley completes one revolution every second .

radians / π = degrees / 180  

radians = πx 360 / 180 = 2 π radians per second

The distance covered by both pulleys is equivalent for the larger pulley.

then d1 = d2

every second, small pulley covers a distance of 40π (small pulley circumference) = d1

d2 = 40π = 120π (large pulley circumference) x factor (f)

f = 1/3

a) the revolutions per min by larger pulley=16 rpm

b) the speed of smaller pulley = 3*2π=6π=6rad/sec=360rad/min

c) then speed of the large pulley = 1/3 * 2π = 2/3 π = 0.66 rad/sec=39.6rad/min

d)the speed of smaller pulley=7200 cm/min

Therefore the solution to this question of 2 pulleys is )16 rpm

b)360 rad/min  c)39.6 rad/min d) 7200cm/min

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Answer:

16[tex]\pi[/tex]

Step-by-step explanation:

Area = [tex]\frac{\pi r^{2} }{4}[/tex]  It is only 1/4 of a circle so we have to divide by 4

a = [tex]\frac{8^{2}\pi }{4}[/tex]

a = 16[tex]\pi[/tex]

Answer: $18.49

Step-by-step explanation:

First, add both the tax rate, 4.315 + 4 = 8.315%

Then take 17.07 divided by 100%, then times 8.315% = $1.42

Then add 17.07 + 1.42 = $18.49

Answer:

5 x 10⁰

Step-by-step explanation:

-15 / -3 = 5

5 in standard form is 5 x 10⁰

Answer: 5

Step-by-step explanation:

-15/-3

negative signs cancel out each other to make positive

⇒15/3

⇒5/1

⇒5 answer.

hope that helps...

As per the concept of margin of error, the standard deviation increases as the margin of error increases.

The term margin of error is referred as the estimate of a small sample drawn from a relatively large population data.

Here the margin of error is usually governed by parameters such as standard deviation of population, sample size and desired confidence level.

Here we have given that for fixed population standard deviation and level of significance, the minimum sample size needed to guarantee a given margin of error ......... as the margin of error increases.

And we need to find the missing term in the statement.

Here let us consider that the following values are represented the given situation,

=> σ = Standard deviation for population

=> m = Margin of error

=> Z = Empirical value of Z-score at a given confidence level

Then the minimum sample size for a given confidence level is written as

=> (Z x σ)²/m²

Here from the above given formula it can be inferred that the minimum sample size is directly related to the population standard deviation. Therefore, the minimum sample size required would increase with the increase in population standard deviation.

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The solution to the equations using the substitution method is x = - 2 and y = 0

The two equations given are known as system of equations. The equations have to be solved simultaneously to determine the required values.

y = 6x + 12 equation 1

y = 4x + 8 equation 2

Equate equation 1 and equation 2 together

6x + 12 = 4x + 8

6x - 4x = 8 - 12

2x = -4

x = -4 / 2

x = -2

Substitute for x in equation 1:

y = 4(-2) + 8

y = -8 + 8

Y = 0

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Answer:

10626 different recital programs possible

Step-by-step explanation:

Since  there is no repetition we can tackle this problem in the following manner.

Out of the 23 pieces, the pianist can choose the first one in 23 ways

Out of the remaining 22 pieces she can choose the second one in 22 different ways

Out of the remaining 21 pieces she can choose the third one in 21 different ways

So total number of ways in which 3 pieces can be played without repetition is 23 x 22 x 21 = 10,626 ways

There is a formula for this kind of situation
If there are a total of n items and you want to choose r items from this, the number of possible ways to do this without repetition is given by the formula

[tex]_{n}P_{r} = \dfrac{n!}{(n-r)!}[/tex]

In this case, n = 23, r = 3 so we get
[tex]_{23}P_{3} = \dfrac{23!}{(23-3)!} = \dfrac{23!}{20!} = 23 \times 22 \times 21 = 10626[/tex]

Same as the above

Both Anorexia and Bulimia the rate of occurrence is high in females as compare to males so the choice is female to male ratio is 12  to 1.

Therefore, the rate of occurrence in females is much more than the males. Correct option is 12 to 1.

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Using the percentage writing form, we know that Ivan ate 4 pizza slices.

By dividing the value by the entire value and multiplying the result by 100, one may determine the percentage.

The percentage calculation formula is (value/total value)100%.

Add all percentages as numbered values, divide by the total number of sets, and you get the average percentage.

The results by 100.

So, we know that:

Ivan ate 40% of the pizza.

And the pizza was cut into 10 slices.

Rewrite the percentage value as:

4/100 = 0.4

We can calculate how many slices Ivan consumed by multiplying the percentage value by the number of slices:

10 + 0.4 = 4

Hence, Ivan ate 4 slices of pizza.

Therefore, using the percentage writing form, we know that Ivan ate 4 pizza slices.

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Answer: B

Step-by-step explanation:

Answer: To solve this system of inequalities graphically, we can plot the two inequalities on the same coordinate plane and find the region where they overlap.

First, let's consider the inequality that states that Tyshawn has at most 22 coins worth no less than $3.40 combined. We can represent this inequality as follows:

Quarters * $0.25 + Dimes * $0.10 ≥ $3.40

Next, we can consider the inequality that states that at most 16 of the coins are quarters. We can represent this inequality as follows:

Quarters ≤ 16

Finally, we can consider the inequality that states that a maximum of 6 of the coins are dimes. We can represent this inequality as follows:

Dimes ≤ 6

To solve the system of inequalities graphically, we can plot the three inequalities on the same coordinate plane and find the region where they overlap. The region where the three inequalities overlap represents all of the possible values of Quarters and Dimes that satisfy all three inequalities.

One possible solution to the system of inequalities is (Quarters = 12, Dimes = 10). This solution satisfies all three inequalities and is represented by a point within the region where the three inequalities overlap on the coordinate plane.

Answer:

the answer is 40q

Step-by-step explanation:

8x5 is 40 when using the distributive property

The system of inequalities is:

x + y ≤ 10

x*$1.25 + y*$1.50 ≥ $24

And the graph can be seen below, on the graph, we can see that there are no solutions.

So we need to start by defining the variables we will be using, these are:

First, we know that Larissa wants to make at most 10 loaves of bread, then we can start with the inequality:

x + y ≤ 10

We also know that each banana bread sells for $1.25 and each but bread sells for $1.50, and she wants to make at least $24, then:

x*$1.25 + y*$1.50 ≥ $24

So the system of inequalities is:

x + y ≤ 10

x*$1.25 + y*$1.50 ≥ $24

So to graph these inequalities, we need to shade the region abovce the first line:

x + y = 10

and below the second line:

1.25*x + 1.50*x = 24

The graph of that system of inequalities can be seen below. The graph shows that the system has no real solutions (only has solutions for negative values of x).

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