Which of the following statements best describes an ionic bond? a)It's an acid b)It's also called a molecule c)It's a bond between a metal and a nonmetal d)It's a bond between a nonmetal and a nonmetal e)Shares electrons in a bond

Answer:

absolute value of 8.7 is 8.7

Answer:

62 degrees

Step-by-step explanation:

The angle is an inscribed angle, so its measure is half the measure of the intercepted arc.

Said another way, the intercepted arc is twice the measure of the inscribed angle.

2 x 31 = 62

Answer:

The formula for the area of a regular octagon with a radius r is 2√2r².

Substituting r=11 units in the formula gives us the following:

Area = 2√2(11)² = 404.95 square units (rounded to the nearest hundredth).

I hope that helps! Let me know if you have any other questions.

We have that the angle is 330°

Now

easy. 2 hours for 10 trees? 10x15=150, therefore if you multiply one thing by 10, you must multiply the other (2). 2x10=20 so 20 hours for 150 trees.

It will take 70 days for the population of bacteria to reach 10,000 from 1000, if it is growing according to the Malthusian model and doubling itself in 10 days.

This can be calculated using the exponential growth formula: N(t) = N0 * (1 + r)^t, where N0 is the initial population size (1000), r is the growth rate (2/10 = 0.2), and t is the time in days (70).

The Malthusian model of population growth is an exponential growth model developed by Thomas Robert Malthus in 1798. It states that the population of a species increases exponentially, doubling every generation, and is limited only by the available resources.

Learn more about Malthusian model:

https://brainly.com/question/28383022

#SPJ4

The probability that a sample of 120 female graduates will = 0.8905

what is probability?

The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true.

= |y -µ| ≥ 0.60

z = y -µ /σ√n

= 0.60/4.10√120

= 0.60/0.3742770

=1.60

Pr ( y -µy) ≤ 0.60 = P |z|≤1.60

=P ( -1.60≤ Z≤ -1.60)

=P (Z ≤ 1.60) -P ( Z≤ -1.60)

= 0.9452 - 0.0547 using z table

= 0.8905

Female graduates

mean = 27.83

sd = 4.10

sample = 120

µx = 27.83

σx = σ/√n

= 4.10/√120

a) P (X bar > 27.83)

= P (X bar -µx)/ σx > 27.83-27.83/4.10/√120

= P ( z > -1.60)

= 0.9452

For men

Mean=µ=37.39

Sd=σ=4.60 ,n=50

Probability that sample mean within $1.00 of the population mean

u-1=37.39-1=36.39

u+1=37.39+1=38.39

P = (36.39 <X bar < 38.39)

= P \(\frac{36.39-37.39 }{4.60/\sqrt{60} } < \frac{X bar - µ}{σ/\sqrt{n} } < \frac{39.39-37.39}{4.60/\sqrt{60} }\)

= P ( -1.6839 < Z <1.6839

= P ( -1.68 < Z <1.68)

= P (Z < 1.68) - P(Z < -1.68)

= 0.9535- 0.0465

= 0.9070

To learn more about probability visit:

brainly.com/question/11234923

#SPJ4

The system of equations solved by elimination gives x = 3 and y = -3 1/2

The elimination method of solving simultaneous equations entails that  process of removing one variable in the linear equations using either addition or subtraction methods and multiplication of values preceding the variables.

From the information given, we have;

3x - 2y = 16

5x + 2y = 8

We can see that one of the variables can be eliminated, so then, we have;

3x + 5x = 16 + 8

Add the like terms

8x = 24

Make 'x' the subject of formula

x = 3

Substitute the value of x in equation 2

5(3) + 2y = 8

expand the bracket

2y = 8 - 15

2y =- 7

y = -3 1/2

Learn about elimination method at: https://brainly.com/question/28405823

#SPJ1

The smallest number of coins you could have had before finding the bag of 53 coins is 371. which is more than 200.

There are seven bags, so there are 7x coins in total:

7x = T.

Since the number of coins in each bag must be an integer, (T + 53) must be a multiple of 8. We know that T = 7x, so we can write this as follows:

(7x + 53) ≡ 0

(mod 8)This means that 7x ≡ 3 (mod 8).

The solutions to this congruence are

x ≡ 3, 11 (mod 8).

Since x is a positive integer, we take

x = 11

(the other possibility, x = 3,

leads to a smaller value for T).

Therefore, T = 7x = 77, and the total number of coins after the bag of 53 coins is found is

T + 53 = 130.

After redistributing the coins into eight equal bags, each bag contains 16 coins.

Therefore, the number of coins you had initially was

7x = 77,

so the smallest number of coins you could have had before finding the bag of 53 coins is

77 - 53 = 24.

After redistributing the coins, you had

8 × 16 = 128 coins left,

To know more about number visit:

https://brainly.com/question/3589540

#SPJ11

Answer:

I think 10/5.becoz in unit rate their denominator most be 1.

Answer:

linear function I think...

Answer:

Step-by-step explanation:

The values of these coefficients to set up the appropriate form of the particular solution is  A cos(x) + B sin(x) + C cos(3x) + D sin(3x)

The correct option is:   Yp = A cos(x) + B sin(x) + C cos(3x) + D sin(3x)

To set up the appropriate form of a particular solution for the given differential equation, we need to first determine the type of the forcing function. The forcing function in this case is 5sinx + 5cos3x, which is a combination of sine and cosine functions with different frequencies. Therefore, the appropriate form of the particular solution would be a combination of sine and cosine functions with coefficients that need to be determined.
The general form of the particular solution can be written as:
yp = A cos(x) + B sin(x) + C cos(3x) + D sin(3x)
Here, A, B, C, and D are the coefficients that need to be determined using the method of undetermined coefficients or variation of parameters. We do not need to determine the values of these coefficients to set up the appropriate form of the particular solution.
Therefore, the correct option is:
D. Yp = A cos(x) + B sin(x) + C cos(3x) + D sin(3x)

To know more about coefficients.

https://brainly.com/question/30845099

#SPJ11

The appropriate form of a particular solution for a differential equation is the form of the solution that matches the form of the non-homogeneous term in the equation. In this case, the non-homogeneous term is 5sin(x) + 5cos(3x), which is a sum of trigonometric functions.

Therefore, the appropriate form of a particular solution would be a linear combination of trigonometric functions, as seen in options B and D. However, we cannot determine the values of the coefficients without further information. It is important to note that the choice of the appropriate form of a particular solution is crucial in finding the complete solution to a differential equation, as it allows us to separate the homogeneous and non-homogeneous parts and solve them separately.
To set up the appropriate form of a particular solution, yp, for the given differential equation y(4) + 10y'' + 9y = 5sinx + 5cos3x, you need to consider the terms on the right-hand side of the equation. Since the right-hand side contains sin(x) and cos(3x) terms, the particular solution should also include these trigonometric functions.

The appropriate form of a particular solution, yp, is: yp = A cos x + B sin x + C cos 3x + D sin 3x (option D). In this form, A, B, C, and D are coefficients to be determined later, and the solution contains the necessary trigonometric functions that match the right-hand side of the given differential equation.

Learn more about trigonometric functions here: brainly.com/question/31962064

#SPJ11

Answer:

I cannot see the number line mentioned here, but I'll explain how you multiply negative and positive using tiles and number line.

To multiply positive and a negative nunber, for instance, 2(–3), you'll think of it as 2 groups of negative one in three's. Using tiles you have

–1 –1

–1 –1

–1 –1

Two groups of negative one in three's, adding that up we have 6.

Using number line. See 2(–3), for instance, as moving twice in intervals of –3. If I am to multiply that, starting from 0, if I move once, I'll land at –3, if I move one more time, I'll land at –6. Since I am to move twice, that's the required answer.

Answer:

3.66

Step-by-step explanation:

35÷9.55=3.66

Answer:

\(1. \:\:g=-14.28\)

\(2.)\:y=\frac{14}{3}\)

Step-by-step explanation:

\(1. \frac{g}{2.1}=-6.8\)

\(\mathrm{Multiply\:both\:sides\:by\:}2.1\)

\(\frac{2.1g}{2.1}=2.1\left(-6.8\right)\)

\(g=-14.28\)

\(2.) \:14=3y\)

\(\mathrm{Divide\:both\:sides\:by\:3}\)

\(\frac{14}{3} = \frac{3y}{3}\)

\(y=\frac{14}{3}\)

Note - If you cannot further simplify, then leave it as is; in fraction form.

We can calculate the overall percentage of married individuals by taking the average of the two given percentages. Approximately 58% of the population in the town is married.

Let's assume the town's population consists of 100 individuals for simplicity. If 25% of men are married, it means 25 men out of 100 are married. Similarly, if 33 1/3% of women are married, it means 33 1/3 women out of 100 are married.

To calculate the overall percentage of married individuals, we add the number of married men (25) to the number of married women (33 1/3) and divide by the total population (100):

(25 + 33 1/3) / 100 = (25 + 100/3) / 100 = (75/3 + 100/3) / 100 = (175/3) / 100 ≈ 0.58.

Therefore, approximately 58% of the population in the town is married.

Learn more about population here : brainly.com/question/31598322

#SPJ11

Answer: If you like your best friend, you should explain to him/her that you like him/her. If you don’t want to do this, then keep a close eye on them and detect whether they like you back like if they treat you with more kindness than you usually receive.

Step-by-step explanation: Activity: Give them different topics and see if they answer in a way that is different from how they would answer someone else.

Answer:

60

Step-by-step explanation:

K is the constant of proportionality or unit rate

(x, y)

(0, 0)

(2, 120)

(3, 180)

(4, 240)

120/2=60

180/2=60

240/2=60

The constant of proportionality or unit rate is 60

Answer:

62.84 m

Step-by-step explanation:

6*3.14 = 18.84

12*2 = 24

10*2 = 20

total: 62.84

The solution is 62.84 m

The perimeter of the figure is P = 62.84 m

What is a Circle?

A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called “center”. Every line that passes through the circle forms the line of reflection symmetry. Also, the circle has rotational symmetry around the center for every angle

The perimeter of circle = 2πr

The area of the circle = πr²

where r is the radius of the circle

The standard form of a circle is

( x - h )² + ( y - k )² = r²,

where r is the radius of the circle and (h,k) is the center of the circle

Given data ,

Let the perimeter of the figure be represented as P

Now , the figure has a semi circle , a square and a triangle

The side of the square = 12m

So , the number of sides of square in the perimeter of the figure = 2 sides

So , perimeter of 2 sides = 2 x 12 = 24 m

Now , the 2 sides of the hypotenuse of the right triangle is also part of the figure , so

perimeter of 2 sides of the triangle = 2 x 10 = 20 m

Now , the total perimeter of figure = perimeter of the semi circle + 24 + 20

Perimeter of semi circle = 2πr / 2

The radius of the circle = 6 m

Substituting the value of r in the equation , we get

Perimeter of the semi circle = ( 2 x 3.14 x 6 ) / 2

Perimeter of the semi circle = 18.84 m

So , the perimeter of the figure P = 18.84 m + 24 m + 20 m

The perimeter of the figure P = 62.84 m

Therefore , the value of P is 62.84 m

Hence , The perimeter of the figure is P = 62.84 m

To learn more about circle click :

https://brainly.com/question/28391204

#SPJ2

To construct a 90% confidence interval for the average speed of cars on the highway with a margin of error no more than ±0.5 mph and a standard deviation of 7 mph, you must clock at least 339 cars.

Step 1: Identify the critical value (z-score) for a 90% confidence interval. This can be found in a standard z-table or using a calculator. The critical value for a 90% confidence interval is 1.645.

Step 2: Use the margin of error (E) formula to calculate the sample size (n):
E = (z * σ) / √n

Where E is the margin of error (0.5 mph), z is the critical value (1.645), σ is the standard deviation (7 mph), and n is the sample size.

Step 3: Rearrange the formula to solve for n:
n = (z * σ / E)^2

Step 4: Plug in the values and calculate the sample size:
n = (1.645 * 7 / 0.5)^2
n ≈ 338.89

Since the sample size must be a whole number, round up to the nearest whole number.

To construct a 90% confidence interval for the average speed of cars on the highway with a margin of error no more than ±0.5 mph and a standard deviation of 7 mph, you must clock at least 339 cars.

Learn more about Statistics: https://brainly.com/question/29093686

#SPJ11

Answer:

The fourth graph to the right.

Step-by-step explanation:

Based on the triangle midpoint theorem, the statement which must be shown is that: B. the length of GH is half the length of KL.

Triangle midpoint theorem states that the line segment which joins the midpoints of two (2) sides of a triangle is parallel to the third side, and it's congruent to one-half of the third side.

Based on the triangle midpoint theorem, we can infer and logically deduce that the statement which must be shown is that the length of GH is half the length of KL.

Read more on triangle midpoint theorem here: https://brainly.com/question/16047906

#SPJ1

Answer:  B. The length of GH is half the length of KL.

Step-by-step explanation:   TRUST ME!  The answer is correct on Edge.  :)

Answer: The answer is -5b-768 over 6

Step-by-step explanation: subtract b from both sides

replace variable a with 10-b in the expression

remove parentheses

combine the opposite terms

simplify

Answer:

  a) 22e^-0.01t kilograms

  b) about 19.906 kilograms

Step-by-step explanation:

You want an equation for the amount of salt in a 15 kL brine tank initially containing 22 kg of salt if 150 L/min of the contents is replaced by pure water.

The quantity of salt s(t) in kilograms can be described by the differential equation ...

  s(0) = 22; s'(t) = -150/15000·s(t)

The solution can be found by separation of variables.

  \(\displaystyle\dfrac{ds}{dt}=-0.01s\\\\\int{\dfrac{1}{s}}\,ds=-0.01\int{}\,dt\\\\\ln{s}=-0.01t+c_1\\\\s=c_2\cdot e^{-0.01t}\qquad\text{where $c_2$ is $s(0)=22$}\\\\\boxed{s(t)=22e^{-0.01t}}\)

The amount of salt remaining after 10 minutes is ...

  s(10) = 22·e^(-0.01·10) = 22·e^-0.1

  s(10) ≈ 19.906 . . . . kilograms

There is about 19.906 kg of salt in the tank after 10 minutes.

__

Additional comment

The initial rate of change of the amount of salt is -22/100 kg/min, so after 10 minutes, we expect an approximate reduction by 2.2 kg to 19.8 kg. Since the rate slows as salt is removed, the value 19.9 kg after 10 minutes is reasonable.

There are a couple of places where the integration constant can be put in the equation for the salt quantity. As a multiplier of the exponential function, its value is found in a straightforward way.

±1, ±2, ±5,1±10,±1/2, and ±5/2 for x should be tested to determine the possible zeros of 2x³ - 3x² + 3x - 10. Thus, option C is the correct answer.

To determine the possible zeros of the polynomial 2x³ - 3x² + 3x - 10, we need to test different values of x. The possible zeros are the values of x that make the polynomial equal to zero.

We can use the Rational Root Theorem to find the potential zeros. According to the theorem, the possible rational zeros are the factors of the constant term (in this case, 10) divided by the factors of the leading coefficient (in this case, 2).

The factors of 10 are 1, 2, 5, and 10. The factors of 2 are 1 and 2.

So, the set of values for x that should be tested to determine the possible zeros is the set of all the combinations of these factors:

a) ±1, ±2, and ±5
b) ±1, ±2, ±5, and ±10
c) ±1, ±2, ±5, ±10, ±1/2, and ±5/2
d) ±1, ±2, ±5, ±10, and ±2/5

In this case, the correct answer is option c) ±1, ±2, ±5, ±10, ±1/2, and ±5/2. These values should be tested to determine the possible zeros of the polynomial.

Learn more about polynomial at:

https://brainly.com/question/29110563

#SPJ11

Answer:

48 teachers

Step-by-step explanation:

Here's two solutions:

Solution 1: Build an equation.

Let $T$ be the number of teachers. The number of math teachers is $\frac{3}{8}T$, and the number of non-math teachers is $30$. Since each teacher is either a math teacher or not a math teacher, we have

$$\frac{3}{8}T + 30 = T.$$Multiplying each side of this equation by $8$ gives us

$$3T + 240 = 8T.$$Subtracting $3T$ from each side gives us $240 = 5T$, and dividing both sides by $5$ gives us $48=T$. Therefore, there are $48$ teachers at Naran's school.

Solution 2: Think proportionally.

Since three-eighths of the teachers are math teachers, the other five-eighths are not math teachers. So, these $30$ non-math teachers are five-eighths of the total number of teachers. Therefore, $\dfrac{30}{5} = 6$ teachers are one-eighth of the total. So, there are $6\cdot 8 = \boxed{48}$ teachers in all.