are these good or okayish grades??

Answer:

14/27

Step-by-step explanation:

7/3 ÷ 9/2

7/3 x 2/9 = 14/27

The value of x that will give a perimeter of 25 inches is 4 inches

The perimeter of a pentagon is the sum of the lengths of all its sides. The formula to calculate the perimeter of a pentagon is:

P = 5L

where is the side length

Initially, the sides of length, L is 1 inches

Now, we increase L by x and perimeter is 25 inches. Thus, can write:

25 = 5(1 + x)

25 = 5 + 5x

5x = 25 - 5

5x = 20

x = 20/5

x = 4 inches

Therefore, the value of x is 4 inches

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Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  

Please have a look at the attached photo.  

My answer:

To find which cylinder has the greater volume, we need to find out the volume of each one.

As we all know that the formula used to determine the volume of a cylinder is:

V = The base area*the height

<=> V = π\(r^{2}\)h (cubic units)

For example, in my attached photo, we will use this formula to find the volume of each one.

The base area = π\(r^{2}\) = π\(3.5^{2}\) = 38.46 square in

The height = 8.5 in

=> the volume of Cylinder A

= The base area*the height

= 38.46*8.5

= 326.91 cubic in

The base area = π\(r^{2}\) = π\(2.7^{2}\) = 22.89 square in

The height = 11 in

=> the volume of Cylinder A

= The base area*the height

= 22.89*11

= 251.79  cubic in

Hence, Cylinder B has the greater volume

a) The solution for b in the equation 2b × 3 = 6 is b = 1.

b) The solution for b in the equation 32 - 3b = 2 is b = 10.

c) The solution for b in the equation 6 + 7b = 41 is b = 5.

d) The solution for b in the equation 100/5b = 2 is b = 10.

a) To solve for b in the equation 2b × 3 = 6, we can start by dividing both sides of the equation by 2 to isolate b.

2b × 3 = 6

(2b × 3) / 2 = 6 / 2

3b = 3

b = 3/3

b = 1

Therefore, the solution for b in the equation 2b × 3 = 6 is b = 1.

c) To solve for b in the equation 6 + 7b = 41, we can start by subtracting 6 from both sides of the equation to isolate the term with b.

6 + 7b - 6 = 41 - 6

7b = 35

b = 35/7

b = 5

Therefore, the solution for b in the equation 6 + 7b = 41 is b = 5.

b) To solve for b in the equation 32 - 3b = 2, we can start by subtracting 32 from both sides of the equation to isolate the term with b.

32 - 3b - 32 = 2 - 32

-3b = -30

b = (-30)/(-3)

b = 10

Therefore, the solution for b in the equation 32 - 3b = 2 is b = 10.

d) To solve for b in the equation 100/5b = 2, we can start by multiplying both sides of the equation by 5b to isolate the variable.

(100/5b) × 5b = 2 × 5b

100 = 10b

b = 100/10

b = 10.

Therefore, the solution for b in the equation 100/5b = 2 is b = 10.

In summary, the solutions for b in the given equations are:

a) b = 1

c) b = 5

b) b = 10

d) b = 10

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Answer:

C. \(m\angle{B}=61^\circ\), a = 15, b = 28

Step-by-step explanation:

using sine to find side a (aka the side opposite angle A):

\(sinA=\frac{a}{32}\)

\(32\cdot{sin(28)^\circ}=a\)

a = 15

Now, angle B can be found by subtracting the other 2 angle measures from 180 (the total interior angle measure for triangles): 180 - (28+91) = 61

Substitute this value into another sine equation to find side b:

\(sinB=\frac{b}{32}\)

\(32\cdot{sin(61)^\circ}=b\)

b = 27.99 or about 28

Answer:

The average distance Martina rode each day on her road trip was 37 miles / 3 days = 12.33 miles (rounded to two decimal places).

Answer:

Step-by-step explanation:

1) Diagonal bisect the angles of Rhombus

∠CAB = ∠CAD

∠CAB = 71

2) ∠DAB = ∠CAB + ∠CAD

 ∠DAB = 71 + 71 = 142

In Rhombus, adjacent angles are supplementary

∠DAB + ∠ABC = 180

142 + ∠ABC = 180

           ∠ABC = 180 - 142

         ∠ABC = 38

3)  In rhombus, opposite angles are congruent

∠ADC = ∠ABC

∠ABC = 38

In rhombus, diagonal bisect angles

∠BDC = (1/2)*∠ADC

∠BDC= 38/2

∠BDC = 19

4) Diagonals bisect each other at 90

∠DEC = 90

5) Diagonals bisect each other

BE = DE

BE + DE = DB

7x -2 +7x -2 =24   {add like terms}

        14x - 4 =24

              14x = 24+4

              14x = 28

                 x = 28/14

                 x = 2 m

6) AB = 13m

BE = 7x - 2 = 7*2 -2 = 14 -2 = 12 m

In right angle ΔAEB,  {use Pythagorean theorem}

AE² + BE² = AB²

AE² + 12² = 13²

AE² + 144 = 169

         AE² = 169 - 144

         AE² = 25

         AE = √25

        AE = 5 m

Diagonals bisect each other

AE = EC

AC = 2*5

AC = 10 m

7)Side = 13 m

Perimeter = 4*side

                  = 4*13

 Perimeter = 52 m

8) d1 = AC = 10 m

   d2 = DB = 24 m

Area = \(\frac{d_{1}*d_{2}}{2}\)

         \(=\frac{10*24}{2}\\\)

          = 10 *12

          = 120 m²

Answer:

it is a function

Step-by-step explanation:

Answer:

NO It isn't a function

Step-by-step explanation:

To first find out if something is a function or not, you see is the any of the x values given are the same ans if they are, its automatically not a function. There are also other ways to find out if it is or isn't.

Answer:

140 doses

Step-by-step explanation:

1 gram = 1000 milligrams

1 gram = 10 doses

10*14 = 140

The change in distance between the two after 15 minutes is 2.124 mi/h.

Velocity is defined as the rate of change in displacement (distance) with time. It's a vector quantity so it has both magnitude and direction. Velocity is given by the formula:

Velocity = Distance / Time

If one walks east at 3 mi/h and the other walks northeast at 2 mi/h, then after 15 minutes, their distance will be:

Distance = Velocity × Time

Distance₁ = 3 mi/h (15 mins)(1 hour/60 mins)

Distance₁ = 0.75 mile east

Distance₁ = 2 mi/h (15 mins)(1 hour/60 mins)

Distance₁ = 0.5 mile northeast

Using trigonometric function and Pythagorean theorem, we can determine the distance between the two people.

d² = (0.5 sin 45°)² + (0.5 cos 45° - 0.75)²

d² = 0.282

d = 0.531 mi

So, After 15 mins, the distance will be 0.531 mi and the change in distance in mi/h is:

(0.531 mi / 15 mins)(60 mins / hour) = 2.124 mi/h

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Answer:

2 (teal)

Step-by-step explanation:

this definition would be surface area not volume. volume is what could fit inside.

a) The rate of change of the drug's concentration at 50 minutes is 1.7 mg/min.

b) The rate of change of the drug's concentration at 85 minutes is 0.2 mg/min.

c) The drug's concentration is decreasing at 115 minutes.

a) The central difference approach can be used to calculate the rate of medication change after 50 minutes.

f'(x) = (f(x+h) - f(x-h))/2 × h    ....(1)

As per the question, we have h = 10 and x = 50

Substitute the values of h = 10 and x = 50 in (1),

f'(40) = (f(50+10) - f(50-10))/2 × 10

f'(40) = (89-55)/20

f'(40) = 1.7 mg/min

b) For the rate of change of concentration at 85 minutes:

Here, f(80) = 111 mg and f(90) = 113.

The concentration at 90 minutes is 113 mg.

Rate of change = (f(90) - f(80)) / h

= (113 - 111) /10

= 2 / 10

= 0.2 mg/min

c) Since the concentration at 120 minutes (68 mg) is lower than the concentration at 110 minutes (103 mg), the drug's concentration is decreasing.

Therefore, the drug's concentration is decreasing at 115 minutes.

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To determine the three angles in a triangle, we can use the Law of Cosines or the Law of Sines. However, since we are not given any side lengths, we will use the dot product formula to find the angles between the sides.

Then, we can compute the magnitudes of these vectors using the Pythagorean theorem:

|AB| = sqrt((Bx - Ax)^2 + (By - Ay)^2)
|AC| = sqrt((Cx - Ax)^2 + (Cy - Ay)^2)
|BC| = sqrt((Cx - Bx)^2 + (Cy - By)^2)

where (Ax, Ay), (Bx, By), and (Cx, Cy) are the coordinates of points A, B, and C, respectively.

Finally, we can use the dot product formula above to compute the cosines of angles A, B, and C, and then take the inverse cosine to find the angles in radians:

A = acos((AB · AC) / (|AB| · |AC|))
B = acos((AB · BC) / (|AB| · |BC|))
C = acos((AC · BC) / (|AC| · |BC|))

where acos denotes the inverse cosine function.

Therefore, we can determine all three angles in the triangle (in radians) using the above formulae.
It seems that the three points of the triangle were not provided in your question. To help you determine the angles of the triangle, please provide the coordinates of the three points (A, B, and C).

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Answer:

\(.\)

Step-by-step explanation:

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

1)

\((x - 5)(x - 5)\)

=(x-5)²

2)

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

\( {(3 x)}^{2} - {(2)}^{2} \)

\( = 9 {x}^{2} - 4\)

3)

\((1+x)(1+x)\)

= (1+x)²

Answer:

30

Step-by-step explanation:

Sum of the ratios = 3 + 4 + 5 = 12

Smallest share = 18 bags

Ratio of the smallest share = 3

Let the largest share = x

From the question

18 ------------ 3

x --------------5

Cross multiply

3x = 18 × 5

Dividing bothsides by 3

X = 18 × 5/ 3

X = 90 / 3

X = 30

Therefore.

The largest share = 30

Answer:

f=2

Step-by-step explanation:

hope this helps you

Answer:

8 units

Step-by-step explanation:

As we can see, the two triangles are similar

If two triangles are similar, then the ratio of their sides are equal

thus, mathematically;

12/6 = x/4

2 = x/4

x = 2 * 4

x = 8

Using the same guideline, for a four-credit class, you would ideally spend:

4 credits * 2-3 hours/credit = 8-12 hours per week.

it is suggested that students allocate around 2-3 hours of study time per credit hour per week for a college-level course. However, the actual study time required may vary based on individual learning styles, prior knowledge, and the specific requirements set by professors or institutions.

Let's apply this general guideline to your scenario:

One three-credit class that is less demanding:

Assuming 2-3 hours of study per credit hour, for a three-credit class, you would ideally spend:

3 credits * 2-3 hours/credit = 6-9 hours per week.

Two three-credit classes that are typically demanding:

Similarly, for each of the two three-credit classes, you would spend:

3 credits * 2-3 hours/credit = 6-9 hours per week.

Since you have two such classes, the total time would be:

2 * (6-9) hours = 12-18 hours per week.

One four-credit class that is very challenging:

Using the same guideline, for a four-credit class, you would ideally spend:

4 credits * 2-3 hours/credit = 8-12 hours per week.

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Answer:

C with points A and B on the line

The diagram that supports the postulate is line option (c).

Lines and points are both undefined terms in geometry.

The given postulate states that;

Exactly one line exists between any two points.

This means that the line must pass through the two points.

From the given options, Only option (c) is true because the line passes through points A and B.

Hence, the diagram that supports the postulate is line option (c).

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Answer:

169.56m^3

Step-by-step explanation:

Rotating EF 90° clockwise would produce the same image as rotating CD

270° counterclockwise

There are different ways of transformations such as:

Rotation

Dilation

Translation

Reflection

Now, the coordinates are given as:

EF = E(4, -5) and F(3, -2)

Now, rotation by 90° clockwise would produce:

E'(-5, -4) and F(-2, -3)

This is a rotation rule of (x, y) → (y, -x)

Thus, if CD has the coordinates C(-4, 5) and D(-3, 2), then the rotation by 270° counterclockwise would produce:

C'(5, 4) and D(2, 3)

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Answer:

The cost is $.08 per ounce or 8 cents per ounce

Step-by-step explanation:

1 quart = 32 ounces

2 quarts = 64 pints

2 quarts costs 5.12

Take the cost and divide by the number of ounces

5.12 / 64

.08 per ounce

The cost is $.08 per ounce or 8 cents per ounce

=================================================

Explanation:

1 quart = 32 fluid ounces

2 quarts = 64 fluid ounces (multiply both sides by 2)

He paid 5.12 dollars for 64 fluid ounces, so the unit rate is 5.12/64 = 0.08 dollars per fluid ounce, or 8 cents per fluid ounce.

---------

We can think of it this way in terms of an equation

5.12 dollars = 64 fluid ounces

5.12/64 dollars = 64/64 fluid ounces ... divide both sides by 64

0.08 dollars = 1 fluid ounce

We divided both sides by 64 to turn "64 fluid ounces" into "1 fluid ounce", due to how the term "unit rate" is set up. The term "unit" means "one". Basically we're finding the cost per 1 unit, or per 1 fluid ounce.

Answer:

x = 6

Step-by-step explanation:

Given

\(\frac{4}{3}\) = \(\frac{8}{x}\) ( cross- multiply )

4x = 24 ( divide both sides by 4 )

x = 6

Hi there!  

»»————-　★　————-««

I believe your answer is:  

\(h =\frac{A}{b}\)

»»————-　★　————-««  

Here’s why:  

⸻⸻⸻⸻

\(\boxed{\text{Solving for 'h'...}}\\\\A=bh\\----------\\\rightarrow bh = A\\\\\rightarrow \frac{bh=A}{b}\\\\\rightarrow \boxed{h=\frac{A}{b}}\)

⸻⸻⸻⸻

»»————-　★　————-««  

Hope this helps you. I apologize if it’s incorrect.  

The monthly payment for a plan of 15 months is given as follows:

680.

The monthly payment for a plan of 15 months is obtained applying the proportions in the context of the problem.

For a 12 month plan, the monthly cost is of 850, hence the total cost is given as follows:

12 x 850 = 10200.

Hence the monthly payment for a plan of 15 months is given as follows:

10200/15 = 680.

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To determine if a function has a vertical asymptote, you need to consider its behavior as the input approaches certain values.

A vertical asymptote occurs when the function approaches positive or negative infinity as the input approaches a specific value. Here's how you can determine if a function has a vertical asymptote:

Check for restrictions in the domain: Look for values of the input variable where the function is undefined or has a division by zero. These can indicate potential vertical asymptotes.

Evaluate the limit as the input approaches the suspected values: Calculate the limit of the function as the input approaches the suspected values from both sides (approaching from the left and right). If the limit approaches positive or negative infinity, a vertical asymptote exists at that value.

For example, if a rational function has a denominator that becomes zero at a certain value, such as x = 2, evaluate the limits of the function as x approaches 2 from the left and right. If the limits are positive or negative infinity, then there is a vertical asymptote at x = 2.

In summary, to determine if a function has a vertical asymptote, check for restrictions in the domain and evaluate the limits as the input approaches suspected values. If the limits approach positive or negative infinity, there is a vertical asymptote at that value.

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Answer:

The translation S(x, y) for the identity transformation, I = ST(x, y) is S(x, y) = ( x - 2, y + 5)

Step-by-step explanation:

Identity transformation is the transformation that results in the copying of the source data to the destination data without change.

Given that T(x, y) = (x + 2, y + 5)

The identity transformation I = S(T(x, y)) that would allow a data (x, y) to remain the same at the destination after the transformation T(x, y) is given as follows;

Where S(x, y) = ( x - 2, y + 5), we have;

S(T(x, y)) = S(x + 2, y + 5) = (x + 2 - 2, y + 5 - 5) = (x, y)

Therefore the translation S(x, y) that would yield the identity transformation, I = ST(x, y) is S(x, y) = ( x - 2, y + 5).

In this problem, the weight of the items produced by a machine is normally distributed with a mean of 8 ounces and a standard deviation of 2 ounces. The probability that a randomly selected item will weigh between 11 and 12 ounces is required.

Now, we need to find the Z scores for 11 and 12 using the formula given below;

Z = (x-μ)/σwhere μ is the mean, σ is the standard deviation, and x is the value we are finding the Z score for. For 11 ounces;Z1 = (11-8)/2 = 1.5For 12 ounces;

Z2 = (12-8)/2 = 2Now, we need to find the area under the standard normal distribution curve between the Z values we just found. Using the standard normal distribution table or a calculator, we can find that the area between Z1 and Z2 is approximately 0.2334.

Substituting the Z scores found earlier in the formula below;

P(Z1 < Z < Z2) = P(1.5 < Z < 2) = 0.2334

Therefore, the probability that a randomly selected item will weigh between 11 and 12 ounces is 0.2334. Hence, the option (d) 0.0440 is incorrect.

The correct option is (none of the above) since it is not given in the options and the probability of 0.2334 .

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When you multiply bothsides of an inequality by a negative sign , the inequality sign changes