what is 3f+7f-f please help​

We need to use Right Angled Triangle Properties.

PR≈15 and QR≈12 is the length of the sides.

What is a Right Angled Triangle?

According to the definition of a right triangle, a triangle is referred to as a right-angled triangle or simply a right triangle if one of its angles is a right angle (90o). Triangle PQR is a right triangle in the illustration, and its components are its base, height, and hypotenuse. Here, QR is the base, PQ is the height, and PR is the hypotenuse. The essential side of a right triangle is its hypotenuse, which is also its largest side and sits across from the triangle's right angle.

In a right triangle we have: (Hypotenuse)2 = (Base)2 + (Altitude)2

Area of a right triangle = (1/2 × base × height) square units.

PR is the Hypotenuse of the Triangle.

PQ=9

Angle ∡PQR=37° and Angle ∡RPQ=53°

So Sin(theta)=opposite side/Hypotenuse

⇒Sin(37°)=9/Hypotenuse

⇒Hypotenuse=9/0.6018

⇒Hypotenuse=14.955

PR⇒14.955

We know that (Hypotenuse)2 = (Base)2 + (Altitude)2

⇒(14.955)2=(9)2+(QR)2

QR=11.9438

PR≈15 and QR≈12

We need to use Right Angled Triangle Properties.

PR≈15 and QR≈12 is the length of the sides.

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Answer:

Step-by-step explanation:

   To find the daily expense for food and lodging for the family, we can use the formula:

   z = (x - μ) / σ

   where z is the z-score, x is the daily expense for food and lodging, μ is the mean daily expense, and σ is the standard deviation. Rearranging this formula to solve for x, we get:

   x = z * σ + μ

Substituting z = 1.5, σ = $60, and μ = $247, we get:

x = 1.5 * $60 + $247 = $337

Therefore, the daily expense for food and lodging for the family was $337.

   To find the percentage of families who spent less than $367 per day, we can standardize the value using the same formula as above:

   z = (x - μ) / σ

   Substituting x = $367, μ = $247, and σ = $60, we get:

   z = ($367 - $247) / $60 = 2

Using a standard normal distribution table or calculator, we can find the percentage of families with a z-score less than 2, which is approximately 97.72%. Therefore, approximately 97.72% of families spent less than $367 per day.

   To find the percentage of families who spent more than $247 per day, we can use the same formula and standardize the value:

   z = (x - μ) / σ

   Substituting x = $247, μ = $247, and σ = $60, we get:

   z = ($247 - $247) / $60 = 0

Using a standard normal distribution table or calculator, we can find the percentage of families with a z-score greater than 0, which is 50%. Therefore, 50% of families spent more than $247 per day.

   To find the percentage of families who spent more than $350 per day, we can standardize the value:

   z = (x - μ) / σ

   Substituting x = $350, μ = $247, and σ = $60, we get:

   z = ($350 - $247) / $60 = 1.72

Using a standard normal distribution table or calculator, we can find the percentage of families with a z-score greater than 1.72, which is approximately 4.35%. Therefore, approximately 4.35% of families spent more than $350 per day.

   To find the percentage of families who spent less than $67 per day, we can standardize the value:

   z = (x - μ) / σ

   Substituting x = $67, μ = $247, and σ = $60, we get:

   z = ($67 - $247) / $60 = -3.00

Using a standard normal distribution table or calculator, we can find the percentage of families with a z-score less than -3.00, which is approximately 0.13%. Therefore, approximately 0.13% of families spent less than $67 per day.

   To find the percentage of families who spent between $200 and $300 per day, we need to standardize both values and find the area between them. Using the same formula as above:

   z1 = ($200 - $247) / $60 = -0.78

   z2 = ($300 - $247) / $60 = 0.78

Using a standard normal distribution table or calculator, we can find the percentage of families with a z-score between -0.78 and 0.78, which is approximately 53.91%. Therefore, approximately 53.91% of families spent between

The number of sodas sold at the baseball game was 119, while the number of hot dogs sold was 72.

Let's assume the number of sodas sold as 'x' and the number of hot dogs sold as 'y'.

According to the problem, the total number of sodas and hot dogs sold is 191, so we can write the equation:

x + y = 191   ...(1)

The problem also states that the number of hot dogs sold was 47 less than the number of sodas sold. Mathematically, we can express this as:

y = x - 47   ...(2)

To find the values of x and y, we can solve the system of equations (1) and (2). Substituting equation (2) into equation (1), we have:

x + (x - 47) = 191

Simplifying the equation:

2x - 47 = 191

2x = 191 + 47

2x = 238

Dividing both sides by 2:

x = 238/2

x = 119

Substituting the value of x back into equation (2):

y = 119 - 47

y = 72

As a result, the total amount of sodas sold is 119, and the total amount of hot dogs sold is 72.

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Answer:

I think the answer is 32

Step-by-step explanation:

if you multiply 16×2 it will equal 32

The types of Polynomials are as follows: Monomial, binomial, trinomial, quadranomial, quintrinomial, Linear, quadratic, cubic and biquadratic.

Sums of terms of the form in, where k is any number and n is a positive integer, make up polynomials. For instance, the polynomial 3x+2x-5. a description of polynomials. The concepts degree, standard form, monomial, binomial, and trinomial are all covered in this video.

By noticing which formulas only contain the operations of addition, subtraction, multiplication, and non-negative integer exponents, the polynomials can be located. Expressions with additional operations are considered non-polynomial expressions.

No part of an algebraic expression should be - Variables' square roots. variable powers that are fractional. variable powers that are negative. variables in any fraction's denominator.

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Answer:

r = -23

Step-by-step explanation:

A slope of 1/2 means that for every y-value increase of 1, the x value will increase by 2.

Between -7 and 5, there was an increase of 12. So, the x value will increase by 24.

To find r, subtract 24 from 1

1 - 24

= -23

So, r = -23

Answer:

135°

have a nice day

hope it helps

Answer:

415.47

Step-by-step explanation:

37.392/0.09 which is 415.47( rounded)

Hope this helps hit the crown :D

The age of the older brother is 13

From the information given, let their ages by x and y

This is represented as;

x + y = 22

(x - 6) (y -6) = 21

From equation (1), make x, the subject of formula

x = 22 - y   (3)

Substitute equation (3) in equation (2), we get;

(22 - y- 6)(y - 6) = 21

expand the brackets

(16 - y)(y-6) = 21

16y - 96 - y² +6y = 21

collect iike terms

-y² + 22y - 96 - 21 = 0

subtract like terms

-y² + 22y - 117 = 0

y²- 22y + 117 = 0

Find the pairs factors of 117 and substitute the values

y² - 13y - 9y + 117 = 0

(y² - 22y) - (9y + 117) = 0

factorize

y(y - 22) - 9(y - 22) = 0

Then y = 9 and y = 22

The older brothers age = x = 22 - y = 22- 9 = 13

Hence, the value is 13

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The complete question:

The sum of the ages of two brothers is 22 years. Six years ago, the product of their ages was 21 years. What is the age of the elder brother?

Answer:

6 feet per minute.

Step-by-step explanation:

The turtle and snail are moving towards each other, so their speeds add up. Therefore, the combined speed at which they approach each other is:

5 feet/min (turtle's speed) + 1 feet/min (snail's speed) = 6 feet/min

Therefore, the turtle and snail are approaching each other at a speed of 6 feet per minute.

Answer:

6 feet per minute.

Answer:

(19-12):12*100 =

(19:12-1)*100 =

158.33333333333-100 = 58.33

The area of a rectangle with a width of 5.1 cm and a height of 11.2 cm is 57.12 cm².

To find the area of a rectangle, we multiply its length by its width. In this case, the width is given as 5.1 cm and the height (or length) is given as 11.2 cm.

Area = length × width

Area = 11.2 cm × 5.1 cm

Calculating the product, we get:

Area = 57.12 cm²

Therefore, the area of the rectangle is 57.12 cm².

The correct answer is: 57.12 cm².

It is important to note that when calculating the area of a rectangle, we should always include the appropriate unit of measurement (in this case, cm²) to indicate that we are dealing with a two-dimensional measurement. The area represents the amount of space covered by the rectangle's surface.

So, the area of a rectangle with a width of 5.1 cm and a height of 11.2 cm is 57.12 cm².

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Answer: y ≤ 7

Step-by-step explanation:

brainlest  

The 7th term of the sequence is 136.6875

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

12, 18, 27....

In the above sequence, we can see that the previous term is multiplied by 1.5 to get the current term

Using the above as a guide,

So, we have the following representation

aₙ = 1.5aₙ₋₁

a₄ = 1.5 * 27

Evaluate the products

a₄ = 40.5

Solving further, we have

a₅ = 40.5 * 1.5

Evaluate the products

a₅ = 60.75

Solving further, we have

a₆ = 60.75 * 1.5

Evaluate the products

a₆ = 91.125

Solving further, we have

a₇ = 91.125 * 1.5

Evaluate the products

a₇ = 136.6875

Hence, the 7th term is 136.6875

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The angle between the ground and the steepest slope on the real rollercoaster is approximately 89.998°.

A model rollercoaster is built to a scale of 1:32. In the model rollercoaster, the angle between the ground and the steepest slope is 110°.What is the angle between the ground and the steepest slope on the real rollercoaster?

To determine the angle between the ground and the steepest slope on the real rollercoaster, you need to consider the scale of the model rollercoaster.To find the real rollercoaster angle, you should use a scale factor that relates the model rollercoaster to the real one.

The scale factor should multiply the model angle to obtain the real one. Since the scale factor relates the model length to the real length, it should relate the horizontal distance and the vertical height.

The horizontal and vertical lengths are in a ratio of 32:1 for the model. This means that for every 32 units in the model, there is one unit in the real rollercoaster. Therefore, we can say that the horizontal length of the real rollercoaster is 32 times the horizontal length of the model rollercoaster.

That is:h(real) = 32h(model)Similarly, the vertical height of the real rollercoaster is 32 times the vertical height of the model rollercoaster. That is:v(real) = 32v(model)

The tangent of an angle equals the vertical height divided by the horizontal distance. Therefore, the tangent of the real angle equals the tangent of the model angle times the scale factor.

That is:tanθ(real) = 32tanθ(model)By substitution,θ(real) = arctan(32tanθ(model))For the given model angle of 110°,

the corresponding real angle is:θ(real) = arctan(32tan110°)θ(real) = arctan(32(-2.74747741945462))θ(real) = arctan(-87.91927694142864)θ(real) ≈ -89.998°

The negative sign indicates that the angle is measured below the horizontal line.

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Answer:

I think it might be $36,360.06

Step-by-step explanation:

The probability that the cupcake picked at random contains walnuts is given as follows:

0.4 = 40%.

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

There are 30 cupcakes in a tin, hence the total number of outcomes is given as follows:

30.

The number of cupcakes with walnuts is given as follows:

Hence the probability that the cupcake picked at random contains walnuts is obtained as follows:

p = (3 + 9)/30

p = 12/30

p = 0.4.

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(1) The value of x is determined as 16.8.

(2) The measure of length VX is calculated as 4.1.

(3) The measure of angle UWV is 69.5⁰.

The value of the missing lengths of the triangle is calculated by applying the following formula;

(1) For the two similar triangles, the value of x is calculated as follows;

20 / (28 - x) = 30 / x

20x = 30 (28 - x )

20x = 840 - 30x

20x + 30x = 840

50x = 840

x = 840 / 50

x = 16.8

(2) The measure of length VX is calculated by applying trig ratios.

tan 63 = 8 / VX

VX = 8 / tan 63

VX = 4.1

(3) The measure of angle UWV is calculated as follows;

angle T = 360 - (94 + 127) = 139

angle UWV = ¹/₂ x 139 (angle at circumference is half of angle at center)

angle UWV = 69.5⁰

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Answer:  6 * 24 = 144 ways.

Step-by-step explanation:

Solution:

Given word => DANGER.

The condition is that vowels can't occupy odd places so, we will let them occupy even places.

A total number of arrangements will be = 6 * 24 = 144 ways.

Answer: 6x24 = 144 ways.

Answer:

thats what i said

Step-by-step explanation:

Answer:

\(A=440\ m^2\)

Step-by-step explanation:

Given that,

The diameter of the cylinder, d = 10 m

Hight, h = 14 m

Radius, r = d/2 = 5 m

We need to find the lateral area of the cylinder. The formula for the lateral area of the cylinder is given by :

\(A=2\pi rh\\\\A=2\times \dfrac{22}{7} \times 5\times 14\\A=440\ m^2\)

So, the lateral surface area of the cylinder is equal to \(440\ m^2\).

The growth rate of the population, given the initial population and the population after 10 years is 12. 5 % every 10 years.

To find the percent change or growth rate of a quantity between two different values, you can use the formula:

Percent change = ( new value - old value ) / old value x 100%

The new value would be the population of the village after 10 years which is 450 people.

The old value is the initial population of the village which is 400

The growth rate of the population is:
= ( 450 - 400 ) / 400 x 100 %

= 12. 5 %

The growth rate for the village is therefore 12. 5 % every ten years.

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Answer:

The Matlab code along with the plot of slope field for the given differential equation is provided below.

Step-by-step explanation:

Matlab quiver function:

The Matlab's quiver function may be used to plot the slope field lines for any differential equation.

The syntax of the function is given by

quiver(x, y, u, v)

Where matrices x, y, u, and v must all be the same size and contain corresponding position and velocity components.

Matlab Code:

[t,y] = meshgrid(0:0.2:2, 0:0.2:2);

v = sin(y) + sin(t);

u = ones(size(v));

quiver(t,y,u,v)

xlabel('t')

ylabel('y(t)')

xlim([0 2])

ylim([0 2])

Output:

The plot of the given differential equation is attached.

Answer:

y = -4x - 9

Step-by-step explanation:

Use slope intercept form, y = mx + b, where m is the slope and b is the y intercept.

Since we are already given the slope and y intercept, we just have to plug them into the equation to find the equation:

y = mx + b

y = -4x - 9

So, y = -4x - 9 is the equation of the line in slope intercept form

Step-by-step explanation:

Given that,

A meal plan lets students buy $20 meal cards.

Each meal card lasts about 8 days.

Let us assume that y denotes number of days for a 20 dollar meal card i.e. $20 every 8 days.

Let x = number of $ for another day.

So,

\(y=\dfrac{8}{20}x+8\)

\(y=\dfrac{2}{5}x+8\)

Hence, this is the required equation.

Answer:

Slope : 0 and the y- Intercept would be :  (0,4)

Step-by-step explanation:

Answer:

Graph the line using the slope and y-intercept, or two points.

Slope: 0

y-intercept: (0,4)

Step-by-step explanation:

The value of y at the point where a curve crosses the y-axis.

Answer:

Step-by-step explanation:

\(A=\frac{a+b}{2}*h=\frac{4+7}{2}*3=16.5cm^2\)

\(A=\frac{ab}{2} =\frac{4*6}{2} =12in^2\)

\(A=wl=6*5=30in^2\)

\(12+30=42in^2\)

\(A=\frac{a+b}{2}h=\frac{28+40}{2}*30=1020ft^2\)

Wall = A=\(\frac{ab}{2} =\frac{6*30}{2}=90ft^2\)

Answer:

Step-by-step explanation:

Question 1:

A = (a+b/2)h

A = (4+7/2)3

A = (11/2)3

A = (5.5)3

A = 16.5cm²

Question 2:

A = bh/2 = 6*4/2 = 24/2 = 12

A = bh = 6*5 = 30

A = 12 + 30 = 42

A = 42in²

Question 3:

A = (a+b/2)h

A = (28+40/2)30

A = (68/2)30

A = (34)30

A = 1020ft²

A = bh/2

A = 30*6/2

A = 180/2

A = 90ft²

Best of Luck!

Answer:

x = 18

Step-by-step explanation:

ΔABC ≅ ΔDEC

∠ B ≅ ∠E

40 = 2x + 4

-2x = 4 - 40

-2x = -36

2x = 36

x = 36/2

x = 18