there are 4 teachers for every 100 students at Brians school. if there are 950 students, write and solve a proportion showing how many teachers are at the school

Answer:

we can find a + a^(1/2) by substitution:

a + a^(1/2) = 6/5 + √(6/5)

Step-by-step explanation:

We have the equation:

a² + a - 1/2 = 5

Adding 1/2 to both sides:

a² + a = 5 1/2

Factoring out a from the left-hand side:

a(a + 1) = 5 1/2

Taking the square root of both sides:

a + 1/2 = ±√(5 1/2 / a)

Since a^(1/2) - a^(1/2) > 0, we know that a is positive, so we can discard the negative root. Then we have:

a + 1/2 = √(5 1/2 / a)

Squaring both sides:

a² + a + 1/4 = 5 1/2 / a

Substituting the expression for a² + a from the first equation:

5 1/2 - 1/2 + 1/4 = 5 1/2 / a

Multiplying both sides by a:

5 1/2 a - 1/2 a + 1/4 a = 5 1/2

Simplifying:

5a - 1/2 = 5 1/2

Adding 1/2 to both sides:

5a = 6

Dividing by 5:

a = 6/5

Finally, we can find a + a^(1/2) by substitution:

a + a^(1/2) = 6/5 + √(6/5)

Answer:

The equation to find the total cost for buying x shirts would be y = 11x + 30

Step-by-step explanation:

The equation y = 11x + 30 represents the total cost of buying x jerseys, where x is the number of jerseys and y is the total cost. The $11 represents the cost of each jersey and the $30 is the one-time fee for the design. So, for every jersey purchased, the cost goes up by $11, and the $30 fee is added on top of that.

The value of z is found by dividing y by x, which results in  z =[tex]-\frac{16}{63}$[/tex]

To solve for z, we can use the equation [tex]$x\cdot z = y$[/tex]. We know that [tex]$x = \frac{7}{8}$[/tex] and [tex]$y = -\frac{2}{9}$[/tex],

Therefore, we can enter these values into the equation as substitutes:

[tex]$\frac{7}{8} \cdot z = -\frac{2}{9}$[/tex]

Next, In order to separate z, we must divide both sides of the equation by [tex]$\frac{7}{8}$[/tex]:

[tex]$z = \frac{-\frac{2}{9}}{\frac{7}{8}}$[/tex]

To divide by[tex]$\frac{7}{8}$[/tex], The fraction can be rotated, then multiplied by its reciprocal, which is [tex]$\frac{8}{7}$[/tex]

[tex]$z = \frac{-\frac{2}{9}}{\frac{7}{8}} \cdot \frac{8}{7}$[/tex]

The fraction on the right can be made simpler as follows:

[tex]$z = -\frac{2}{9} \cdot \frac{8}{7} = -\frac{16}{63}$[/tex]

So, The value of z is found by dividing y by x, which results in  z =[tex]-\frac{16}{63}$[/tex]

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Answer:

3.25

Step-by-step explanation:

total 18.25 - 2.00 tip = 16.25

16.25/5=3.25

In a right triangle, the Pythagorean theorem states that the sum of the legs squared is equal to the hypotenuse squared.

Or that a² + b² = c²

Where and and b are the legs and c is the hypotenuse

(Note that the hypotenuse is the longest side and the legs are the two shorter sides)

Here, we are given the length of the hypotenuse as well as the length of one of the legs. Given this we are asked to find the other leg UT.

We can find the length of UT by plugging in the given values into the Pythagorean Theorem and then solving for the missing variable.

Because the given hypotenuse is 17 we can say that c = 17 and since a leg is given we can say that a = 8

Plugging this into the formula we acquire (b is UT or the other leg)

8² + b² = 17²

==> evaluate the exponents

64 + b² = 289

==> subtract 65 from both sides

b² = 225

==> take the square root of both sides

b = 15

The length of UT is 15

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The pitch of the roof is roughly 35.3 degrees, and the middle height of the roof is 19.3 feet.

The Pythagorean theorem, sometimes known as Pythagoras' theorem, is a basic relationship in Euclidean geometry between the three sides of a right triangle. It indicates that the area of the hypotenuse square is equal to the sum of the areas of the squares on the other two sides.

Here,

To find the pitch of the roof, we need to use the Pythagorean theorem to determine the height of the roof at the center. The Pythagorean theorem states that in a right triangle, the sum of the squares of the two shorter sides is equal to the square of the longest side (the hypotenuse).

In this case, the height of the roof at the center is the hypotenuse, and the two shorter sides are the width of the house (32 feet) and half of the length of the rafter (22 feet / 2 = 11 feet). So, using the Pythagorean theorem, we can set up the following equation:

h² = (32 / 2)² + 11²

h² = 16² + 11²

h² = 256 + 121

h² = 377

h = √377

h = 19.3 feet

Next, we use the tangent function to find the pitch of the roof. The tangent of an angle is equal to the opposite side divided by the adjacent side. In this case, the opposite side is the height of the roof (19.3 feet), and the adjacent side is half of the rafter length (11 feet). So, we can set up the following equation:

tan(pitch) = 19.3 / 11

We can use the inverse tangent function (tan^-1) to find the angle, which will give us the pitch of the roof in degrees.

pitch = tan^-1(19.3 / 11)

The pitch of the roof is approximately 35.3 degrees and height of the roof at the center is 19.3 feet.

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Answer: C,A,D

Step-by-step explanation:

Answer:

Step-by-step explanation:

The mean and standard deviation of two surveys do not give enough information to determine which statement is true. To compare the two surveys and determine which is true, you would need additional information such as the sample sizes, the confidence intervals for the means, and/or a hypothesis test comparing the means of the two surveys.

Step-by-step explanation:

The objective Felipe had was to solve for x. The first step to do is to try to balance each side. He subtracted 3x from 2x which got him -x+6=-8 , since 2x - 3x equals -1x and the 3x minus the 3x cancels out. I hope this helps!

The equation represents a direct proportion

The proportionality constant is 1.2

From the question, we have the following parameters that can be used in our computation:

a=1.2b

The above equation is a proportional linear equation

A proportional linear equation is represented as

y = kx

Where

The constant of proportionality is k

Using the above as a guide, we have the following:

The equation a=1.2b is a direct proportion and the proportionality constant is 1.2

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Answer:

53 and 3/5's of a percent

Step-by-step explanation:

The first term is 2, the common difference is 2 and the sum of the first ten terms is 110

An equation is an expression that contains numbers and variables linked together by mathematical operations of addition, subtraction, multiplication, division and exponents. An equation can either  be linear, quadratic, cubic, depending of the degree of the variable.

An arithmetic term is given as:

[tex]a_n=a+(n-1)d[/tex]

where a is the first term and d is the common difference.

The 5th term and 8th term of an AP are 10 and 16. Hence:

a + 4d = 10    (1)

and:

a + 7d = 16     (2)

subtract equation 1 from 2 to get d:

3d = 6

d = 2

Common difference is 2

a + 4d = 10

a + 4(2) = 10

a = 2

First term is 2

The sum of first ten terms is:

[tex]S_{10}=\frac{n}{2} (2a+(n-1)d)=\frac{10}{2}(2(2)+(10-1)2) = 110[/tex]

The sum is 110

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Answer:

20/13=1.54

1.54*8=12.32

The manager can use the unit rate, the price of one ticket to find the price of 8 tickets by doing the steps above.

Step-by-step explanation:

Answer:

120%

Step-by-step explanation:

3,600,000 divided by 3,000,000, times 100 = 120%

So, 120% of 3,000,000 is equal to 3,600,000

Answer:

120 %

Step-by-step explanation:

To solve for this percentage problem, we set up an equation:

[tex]3,000,000 * \frac{x}{100} = 3,600,000[/tex]

[tex]30,000 * x = 3,600,000[/tex]

x = 120

Answer:

4 middle carriages have 162 passengers

Step-by-step explanation:

Since every 10 consecutive carriages have 398 passengers, then each carriage has 398/10 = 39.8 passengers.

Since there are 36 carriages in the train, then there are 36 * 39.8 = 1428 passengers in the train.

Therefore, there are 1400 - 1428 = -28 passengers missing.

This means that each carriage has 39.8 - (-28/36) = 39.8 + 0.78 = 40.58 passengers.

So, the 4 middle carriages have 4 * 40.58 = 162.32 passengers.

Rounding to the nearest whole number, we can say that 4 middle carriages have 162 passengers.

Answer:

  192

Step-by-step explanation:

If a train with 36 carriages holds 1400 passengers, 398 in any 10 consecutive carriages, you want to know the number in the 4 middle carriages.

The first 30 carriages will hold 3·398 = 1194 passengers, so there must be 1400 -1194 = 206 in the remaining 6 carriages. The same would be true counting carriages from the other end.

Then the 10 +6 carriages at either end of the train must hold 398 +206 = 604 passengers. That leaves 1400 -2·604 = 192 passengers in the middle 4 carriages.

The length of one side of the model is 0.099cm/part.After Jayden folded a 66 cm strip of paper into 666 equal parts to model a honeycomb cell.

Jayden created a model of a honeycomb cell by folding a 66 cm strip of paper into 666 equal corridor. By dividing the total length of the strip by the number of corridor.

The length of one side of the model can be calculated as follows:
66 cm / 666 = 0.099 cm/part

Thus,it means each side of the honeycomb cell model is roughly 0.099 cm long. This length was determined by Jayden by dividing the total length of the strip into 666 equal corridor, each part representing one side of the honeycomb cell.

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Answer:

where's the figure??

Step-by-step explanation:

i think this question is incomplete

The quadratic equation that we need to solve is:

96 = 208 - 16t^2

And the solution is t = √7

We know that the height equation is the quadratic equation below:

h = h0 - 16t^2

If the initial height is 208, then we can write:

h = 208 - 16t^2

Now we can find how long takes to reach a height of 96 feet, then we can write:

96 = 208 - 16t^2

That is the equation we need to solve.

Solving that for t we will get:

96= 208 - 16t^2

16t^2 = 208 - 96

16t^2 = 112

t^2 =112/167

t = √7

The correct option is the last one.

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If the current is 2.2 A, it falls within the 2% tolerance range of 2.156 A to 2.244 A and would be considered correct.

To determine if 2.2 A falls within the 2% tolerance range, we first need to establish what the expected current value is. If the expected current value is not specified, it's best to use the maximum rated current value as the expected value.

Once we have the expected current value, we can calculate the tolerance range. Tolerance is expressed as a percentage of the expected value, and in this case, it's 2%.

So the tolerance range is:

(Expected Value) * (Tolerance Percentage) = Tolerance Range

For example, if the expected value is 2.2 A, then the tolerance range would be:

2.2  * 0.02 = 0.044

The tolerance range represents the amount by which the actual current can deviate from the expected value and still be considered acceptable. In this case, the tolerance range is 0.044 A, so the acceptable range for the current would be:

(Expected Value - Tolerance Range) to (Expected Value + Tolerance Range)

2.2 - 0.044 to 2.2 + 0.044 = 2.156 to 2.244

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This means that Tyler can type 6 words in the same amount of time it takes Kyla to type 3 words. This means that Tyler is able to type twice as many words as Kyla per minute.

1. Define a variable

We define a variable called "Tyler" to represent how many words per minute Tyler can type.

2. Write the expression to represent the problem

The expression to represent the problem is "Tyler = 3 * 2", which means that Tyler can type twice as many words per minute as Kyla, who can type 3 words per minute.

The answer is that Tyler can type 6 words per minute, which is twice as many as Kyla can type.

This means that Tyler can type 6 words in the same amount of time it takes Kyla to type 3 words. This means that Tyler is able to type twice as many words as Kyla per minute.

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We subtract 8 from the x-coordinate and add 20 to the y-coordinate of the original point.

In mathematics, translation refers to the process of moving an object from one location to another, without rotating or scaling it. The movement is described by a vector, which is a directed line segment that specifies the direction and distance of the movement.

In two-dimensional geometry, a translation can be represented by a shift of an object along the x- and y-axes. For example, if a point is translated by a vector (a, b), its new position will be (x + a, y + b), where (x, y) is the original position of the point.

Translations can also be performed on shapes, such as lines, polygons, or curves. The effect of a translation on a shape is to create a new shape that is identical to the original shape, but located in a different position.

A translation is a transformation that moves a figure in a certain direction and by a certain distance without rotating or reflecting it. To find the rule for a translation, we need to find the vector that represents the displacement between the original point and the translated point.

Given two points A (2, -5) and A' (-6, 15), the translation vector is given by:

Translation vector = A' - A = (-6, 15) - (2, -5) = (-6 - 2, 15 - (-5)) = (-8, 20)

So, the rule for the translation is:

(x, y) -> (x - 8, y + 20)

This means that to apply the translation, we subtract 8 from the x-coordinate and add 20 to the y-coordinate of the original point.

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Answer:

The inverse function can be written as:

g(x) = (x - 7 + √3) / 5

Step-by-step explanation:

Starting with the equation y = 5x + 7 - √3, we switch the roles of x and y to get x = 5y + 7 - √3.

Next, we isolate y by subtracting 7 and adding √3 to both sides, which gives x - 7 + √3 = 5y.

Finally, we divide both sides by 5 to get g(x) = (x - 7 + √3) / 5.

This is the inverse function g(x) of f(x) = 5x + 7 - √3. The inverse function is useful in solving problems where the original function is not explicitly invertible.

The graph represents this inequality which has been attached below. The number line with a closed circle on the number 56 and a line shaded to the left.

In math, a number line can be defined as a straight line with numbers arranged at equal segments or intervals throughout. A number line is typically shown horizontally and can be extended indefinitely in any direction.

The water slide is 56 feet in height. A closed and shaded circle to the left of the graph indicates the inequality x 56.

The graph showing the inequality x 56 on the number line starting at 56 is represented as a closed and shaded circle.

Thus, the required graph has been attached below.

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Answer:

Step-by-step explanation:

a-2

Since 6100 is greater than 5600, nine refrigerators and eight pianos would overload the truck.

What is linear inequality?

A linear inequality is an equation that represents a linear relationship between two variables and is used to describe a region of the coordinate plane that satisfies a given set of conditions.

Let "x" be the number of refrigerators and "y" be the number of pianos. The total weight of the refrigerators is 300 pounds per refrigerator, so the total weight of the refrigerators is 300x pounds. The total weight of the pianos is 425 pounds per piano, so the total weight of the pianos is 425y pounds. The total weight of the load must be less than or equal to 5600 pounds, so we can write an inequality as follows:

300x + 425y ≤ 5600

To graph this inequality, we can use the coordinates of points that satisfy the inequality and shade the region that represents the solutions.

To determine if nine refrigerators and eight pianos would overload the truck, we can substitute these values into the inequality and see if it still holds:

300 × 9 + 425 × 8 = 2700 + 3400 = 6100

Since 6100 is greater than 5600, nine refrigerators and eight pianos would overload the truck.

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The cumulative frequency and relative cumulative frequency for students who earned a score of 20 or lower on the quiz is 29; 58%. (option d)

Cumulative frequency refers to the running total of frequencies, or the sum of frequencies up to a certain point. In this case, the cumulative frequency is the number of students who scored 20 or lower on the quiz.

Relative cumulative frequency, on the other hand, expresses the cumulative frequency as a percentage of the total number of students in the sample. To find the relative cumulative frequency, we divide the cumulative frequency by the total number of students and multiply by 100.

Therefore, for students who scored 20 or lower on the quiz, the cumulative frequency is 29 and the relative cumulative frequency is 58% (29/50 * 100).

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Answer: 38, 76%

Step-by-step explanation:

Recall that for cumulative frequency we add up all the values that fall above or below a given bin of data. So, if we want all scores less than 20 it should be the first four bins with a total of:

8 plus 8 plus 13 plus 9 equals 38

To get the relative frequency we take the total in the bins for scores of 20 and lower divided by the total of all bins:

38 over 50 equals 0.76 equals 76 percent sign

The probability you expect the spinner to not land on B is 0.4.

Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.

We know that, probability of an event = Number of favourable outcomes/Total number of outcomes

Given that, a spinner is divided into three equal parts A, B, and C.

The repeated experiment of spinning the spinner twice is simulated 125 times.

The total number of outcomes = 125

The number of favorable outcomes = 12+18+15+17+13= 75

Probability of landing on B = 75/125

= 0.6

Probability of not landing on B

= 1-0.6

= 0.4

Therefore, the probability you expect the spinner to not land on B is 0.4.

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

A spinner is divided into three equal parts A, B, and C. The repeated experiment of spinning the spinner twice is simulated 125 times. A table of outcomes is shown.

Based on the table, for what probability can you expect the spinner to not land on B?

(A) 0.10

(B) 0.33

(C) 0.40

(D 0.66