The exam scores for 200 students are normally distributed with a mean of 72 and a standard deviation of 10. Which answer choice below represents the number of students with scores between 72 and 82?.

Step-by-step explanation:

The statements are

1.Draw Oa,Ob

2.OR is perpendicular to AB

3.OR is congruent to OR

4.OA is congruent to OB

5.Triangle AOR is congruent to BOR.

6.AR is congruent to AB.

The reasons are

1.Auxalaritly lines

2 Radius are perpendicular to tangent

3.Reflexitive

4.Radii of same circle are equal

5.HL theorem, (since we know hypotenuse and a leg)

6.CPCTC

Answer:

12/3=4

Step-by-step explanation:

it's 4, 2/3's stay the same. do the reciprocal on 1/6 which will be 6/1 and multiply

2/3(6/1)=12/3

and turn it to a mixed fractions and you would get 4

Answer: B: the force on the car is greater than the force on the bug

Step-by-step explanation:

The force on the car is greater because it is travelling at a faster speed.

Answer:

5 Hamburgers  = $12.50 4 Chicken sandwiches $8.00( $12.50 + $8.00 = $20.50

Step-by-step explanation:

Answer:

Marco bought 5 hamburgers and 4 chicken sandwiches.

Step-by-step explanation:

Set up a system of equations:

2c + 2.5h = 20.5

c + h = 9

Solve by elimination by multiplying the bottom equation by -2:

2c + 2.5h = 20.5

-2c - 2h = -18

Add the equations together and solve for h:

0.5h = 2.5

h = 5

So, he bought 5 hamburgers. Plug in 5 as h into the second equation to solve for c:

c + h = 9

c + 5 = 9

c = 4

So, Marco bought 5 hamburgers and 4 chicken sandwiches.

Answer:

$557.5

Step-by-step explanation:

783/2

391.5 + 83 (more) =

557.5

Answer:

91 cents per ounce

Step-by-step explanation:

Divide 13.59 by 15

Answer: $0.91

Step-by-step explanation:

Take $13.59 divided by 15 = $0.91 per ounce

If you can, please give me a Brainliest, I need 2 more to get to the highest rank,  thank you!

Answer:

50 oranges

Step-by-step explanation:

Convert the measurements for them to be the same ie 4kg to g

1kg=1000g. 4kgx1000=4000g

4000g is the mass of all oranges

1 orange=80g

? =4000g that is 4000/80

=50 oranges

Answer:

50 oranges

Step-by-step explanation:

Since each orange is measured in grams, we convert the 4 kg to g to start.

4 kg is equal to 4000 g.

Each orange weighs 80 g, so we divide 80g into 4000g.

80 divided by 4000 equals 50.

50 oranges are in the box.

I Hope This Helps!

Answer:

- 8

Step-by-step explanation:

Answer:

-8

Step-by-step explanation:

3x(x+x)−6x^2+2^2−12

=6x^2+−6x^2+4+−12

Combine Like Terms:

=6x^2+−6x^2+4+−12

=(6x^2+−6^2)+(4+−12)

=−8

Let total data be x GB

then

4% of x = 1.2GB

4% × x = 1.2

0.04 x = 1.2

x = 1.2 / 0.04

x = 120 ÷ 4 = 30 GB

The time in years for which the values are the same is given as follows:

7.25 years.

A decaying exponential model is given as follows:

y = a(1 - r)^t.

For which:

The parameters for this problem are given as follows:

a = 56000, r = 0.12.

Hence the exponential model is given as follows:

y = 56000(0.88)^x.

The linear model is given as follows:

y = b - mx.

In which:

The parameter values for this problem are given as follows:

b = 56000, m = 56000/12 = 4666.67.

Hence the linear model is:

y = 56000 - 4666.67.

The point of intersection of the two graphs is at a time of 7.25 years.

More can be learned about exponential functions at https://brainly.com/question/25537936

#SPJ1

The estimated annual revenue for McDonald's restaurants worldwide in 2019 is $20.56 billion.

The annual revenue from McDonald's restaurants worldwide between 2015 and 2019 can be estimated by the equation R = 25.44 - 1.22t, where R is in billion dollars and t is in years since January 1, 2015. To find the estimated annual revenue for a specific year, we can substitute the value of t into the equation and solve for R.

For example, to find the estimated annual revenue for the year 2017, we can substitute t = 2 (since 2017 is 2 years after January 1, 2015) into the equation:

R = 25.44 - 1.22(2)
R = 25.44 - 2.44
R = 23

Therefore, the estimated annual revenue for McDonald's restaurants worldwide in 2017 is $23 billion.

Similarly, we can find the estimated annual revenue for other years by substituting the corresponding value of t into the equation and solving for R. For example, for the year 2019, t = 4, so we can substitute t = 4 into the equation and solve for R:

R = 25.44 - 1.22(4)
R = 25.44 - 4.88
R = 20.56

Therefore, the estimated annual revenue for McDonald's restaurants worldwide in 2019 is $20.56 billion.

To know more about revenue refer here:

https://brainly.com/question/614034#

#SPJ11

Answer:

value 315 3/4 value 59 1/3

The probability of getting three heads when tossing three coins is 1/2 x 1/2 x 1/2 = 1/8.

1/8

The probability of getting a head or a tail when flipping a coin is 1/2.  

Therefore, the probability of getting two heads when tossing two coins is 1/2 x 1/2 = 1/4.

The probability of getting three heads when tossing three coins is 1/2 x 1/2 x 1/2 = 1/8.

Since each person is tossing three coins, the probability that they both obtain the same number of heads is 1/8.

The probability of getting n heads when tossing n coins is 1/2^n. Therefore, the probability of getting the same number of heads when two people toss n coins is 1/2^n. This means that if two people each toss a coin, the probability that they both get heads is 1/4; if they each toss two coins, the probability that they both get two heads is 1/16; if they each toss three coins, the probability that they both get three heads is 1/64; and so on.

Learn more about probability here

https://brainly.com/question/11234923

#SPJ4

1990

that my answer please follow for help this

The  values of x will f(x) > 0 for x < 0, and f(x) < 0 for -6 < x < 0 and x > -6.

To determine the values of x for which f(x) > 0, we need to find the intervals where the function is positive. Let's analyze the function f(x) = x*-x³-6x².

First, let's factor out an x from the expression to simplify it: f(x) = x(-x² - 6x).

Now, we can observe that if x = 0, the entire expression becomes 0, so f(x) = 0.

Next, we analyze the signs of the factors:

1. For x < 0, both x and (-x² - 6x) are negative, resulting in a positive product. Hence, f(x) > 0 in this range.

2. For -6 < x < 0, x is negative, but (-x² - 6x) is positive, resulting in a negative product. Therefore, f(x) < 0 in this range.

3. For x > -6, both x and (-x² - 6x) are positive, resulting in a negative product. Thus, f(x) < 0 in this range.  

For such more questions on values

https://brainly.com/question/843074

#SPJ8

The value of dy/dt is 0 units per second.

a) Given: y= √x Differentiating with respect to t, we get; \(dy/dt = 1/2√x * dx/dt\)

On substituting the values of x and dx/dt in the above equation, we get; dy/dt = 1/2 * √16 * 3= 1.5 units per second

Therefore, the value of dy/dt is 1.5 units per second.

b) Given: \(y= √x\)

Differentiating with respect to t, we get;

\(dy/dt = 1/2√x * dx/dt\)

Let us assume that y = k, where k is a constant that can be determined by the given value of x.

Substituting the values of x and y in the equation, we get; 25 = √x

Therefore, x = 625dx/dt

= 0

(Given)\(dy/dt = 1/2√x * dx/dt\)

dy/dt = 1/2√625 * 0

= 0

Therefore, the value of dy/dt is 0 units per second.

To learn more about Differentiating visit;

https://brainly.com/question/13958985

#SPJ11

A domain restriction placed on a non-invertible function affect its inverse.

Using inverse function concepts, it is found that:

The inverse of the function is \(y = \sqrt{x+3}-1\), and the domain of the inverse function is \(\left[-3,\infty ]\)

   A function will have an inverse if for each output, there is only one respective input.

   The domain of the inverse is the range of the original function.

The function given is:

\(f(x) = (x+1)^{2} -3\)

   It's range is \(\left[-3, \infty]\), which will be the domain of the inverse.

To find the inverse, we exchange x and y, and isolate y, then:

\(y = (x+1)^{2} - 3\\ \\x = (y+1)^{2} - 3\\\\(y+1)^{2} = x+3\\ \\\sqrt{((y+1)^{2}} = \sqrt{x+3} \\\\y+1 = \sqrt{x+3}\\\\y = \sqrt{x+3} -1\)

The inverse of the function is \(y = \sqrt{x+3} -1\), and the domain of the inverse function is \(\left[-3, \infty]\).

To learn more about invertible function click here https://brainly.com/question/3831584

#SPJ4

Answer:

(2,3)

Step-by-step explanation:

Answer:

45.5

Step-by-step explanation:

i passed

Therefore, the bumblebee bat is 0.5 centimeters shorter than the Etruscan pygmy shrew.

Inequalities are used in many areas of mathematics, including algebra, calculus, and geometry. They are also used in other fields such as economics, physics, and engineering to model real-world situations where values can vary within certain bounds. Solving inequalities involves finding the set of values that satisfy the inequality. This can be done using algebraic techniques such as adding or subtracting the same quantity from both sides of the inequality, multiplying or dividing both sides of the inequality by a positive number, or using the properties of absolute value. The solution to an inequality is often expressed as an interval or a set of numbers that satisfy the inequality.

Here,

According to the Guinness World Records, the bumblebee bat is the smallest mammal in the world, measuring only about 3 centimeters in length, while the Etruscan pygmy shrew measures about 3.5 centimeters in length.

To find out how much shorter the bat is than the shrew, we can subtract the length of the bat from the length of the shrew:

3.5 cm - 3 cm = 0.5 cm

The bumblebee bat and the Etruscan pygmy shrew are both very small mammals, but the bumblebee bat is actually shorter than the Etruscan pygmy shrew.

To know more about inequality,

https://brainly.com/question/30238773

#SPJ1

Answer:

0

Step-by-step explanation:

Since f(x)=18 you would do:

f(x)= 18(2)-2(18)+3

f(x)=36-36+3

Final Answer: 0

Step-by-step explanation:

f(x) = x^2 - 2x + 3

f(x) = 18

x^2 - 2x + 3 = 18

x^2 - 2x + - 15 = 0

(x-5) (x+3) = 0

x = 5 (or) x = -3

not sure of the answer^^

where t is the number of hours worked by Natalle

Here, we want to write an equation that will represent the given scenario

Let the number of hours for which she earned the pay be t

From the question, she earns $11 per hour

So for t hours, the amount earned excluding the tip will be;

Now, let us add the tip and equate to the total amount earned

We have this as;

Answer:

The expression to find the perimeter is 12x² - 6, and the perimeter when x= 1.5 is 21

Step-by-step explanation:

The perimeter is the sum of all side lengths for a 2d shape, such as this triangle. Our perimeter is thus

4x² - 3 + 4x² - 2 + 4x² - 1

We can then separate our variables and constants to make it

4x² + 4x² + 4x² - 3 - 2 - 1

Add the constants to get

4x²+4x²+4x²  - 6

To add variables, we must first make sure that they are the same variable/letter as well as to the same degree. The coefficient only affects the result. Because all of our variables are the same letter (x) and are all to the second degree, we can add them. To do this, we simply add the coefficients together to make one big coefficient, and multiply that by the variable. Thus,

4x² + 4x² + 4x² = (4+4+4)x² = 12x²

4x²+4x²+4x²  - 6 = 12x² - 6

Another way of looking at it is that 4x² = 4(x²) = x²+x²+x²+x²

Therefore, the expression to find the perimeter is 12x² - 6, and the perimeter when x= 1.5 is 12 * 1.5² - 6 = 21

Answer:

The value of x is -3 and 2.

Step-by-step explanation:

First, you have to elaborate the equation :

\( {x}^{2} + x - 6 = 0\)

\( {x}^{2} - 2x + 3x - 6 = 0\)

Next, you can factorize it by taking out the like-terms :

\(x(x - 2) + 3(x - 2) = 0\)

\((x + 3)(x - 2) = 0\)

Lastly you have to solve it :

\(x + 3 = 0\)

\(x = - 3\)

\(x - 2 = 0\)

\(x = 2\)

Answer:

\(x = 2\) or (look down)

Step-by-step explanation:

\(x^{2}\)+\(x\)−\(60\) \(=\) \(0\)

Answer:

\(x = -3\)

test of 250 questions

40% of the fist 125 are ok, this means that 125(0.4) = 50 questions of the first 125 are ok

If jassi needs 60% of the 250 ok, that is 250(0.6) = 150

If of the first half she already has 50 questions ok, and needs 150, she needs to have 100 questions our of the second 125

If she needs 100 out of 125, this percent is 100/125 = 0.8, this means 80%

Answer:

Jassi needs 80% of the second 125 questions to be ok