I have 90% after about 75%
of the semester. What's the
lowest grade I could earn at
the end of the semester?

Answer:

C) 2

Step-by-step explanation:

I don't have an explanation, I just guessed.

Answer:

(C) 2

Step-by-step explanation:

We will need to make a Given, Statement, and Reason table to solve this problem.

Given:                Statement:             Reason:

AC=CB               AC=2MC                Part Whole Postulate

AM=CM              AC=2x4=8              Substitution and Algebra

CM=4                  AB=2AC                 Part Whole Postulate

AN=14                 AB=2x8=16             Substitution and Algebra

Find:                   AB-AN=NB             Part Whole Postulate

NB                       16-14=2                   Substitution and Algebra

NB=2

Hope this helps! :)

The Mean, Variance, Standard Deviation, and Coefficient of Variation for the given sample of the number of severe car accidents in 1-90 from 2015 to 2020 are:

Mean = 224.833

Variance = 1956.0667

Standard Deviation (SD) = 108.319

Coefficient of Variation (CV) = 48.163%

From the question above, Given data is: 256, 189, 172, 220, 320, 192

Mean, variance, standard deviation and coefficient of variation for the given sample of the number of severe car accidents in 1-90 from 2015 to 2020 are given below:

The mean of data is equal to the sum of all data points divided by the total number of data points.

N = 6

Sum of data = 256 + 189 + 172 + 220 + 320 + 192 = 1349 ∴ Mean = 1349 / 6= 224.833

Calculation of Variance: The variance of data is the average of the squared differences from the mean.

Variance is calculated by dividing the sum of squared deviations by N-1, where N is the number of data points and then find the average.

Calculation of standard deviation: The standard deviation of data is the square root of the variance.SD = √11736.4 = 108.319

Coefficient of variation (CV): The coefficient of variation (CV) is a normalized measure of the dispersion of the data points. It is the ratio of the standard deviation to the mean.

CV is used to analyze and compare data of different sizes.

So, CV = (SD / Mean) × 100%CV = (108.319 / 224.833) × 100%= 48.163%∴

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To calculate the number of ways to select 2 non-adjacent students, we can use recurrence relations for both linear and circular arrangements. For the linear arrangement, the recurrence relation is determined by considering two cases: selecting the first student and not selecting the first student. For the circular arrangement, we introduce an additional student to simplify the problem and derive a recurrence relation based on whether the additional student is selected or not.

(a) For the linear arrangement, let's consider the number of ways to select 2 non-adjacent students in a row of n students. We can define a recurrence relation as follows:
Let C(n) represent the number of ways to select 2 non-adjacent students in a row of n students.
If the first student is selected, then the second student cannot be selected, so we are left with n-2 remaining students. The number of ways to select 2 non-adjacent students in this case is C(n-2).
If the first student is not selected, then we have n-1 remaining students. The number of ways to select 2 non-adjacent students in this case is C(n-1).
Therefore, the recurrence relation for the linear arrangement is:
C(n) = C(n-1) + C(n-2)
(b) For the circular arrangement, we introduce an additional student to simplify the problem. Let's consider a circle of n+1 students (n original students and 1 additional student). We want to select 2 non-adjacent students in this circle. We can define a recurrence relation as follows:
Let D(n) represent the number of ways to select 2 non-adjacent students in a circle of n+1 students.
If the additional student is selected, then the two non-adjacent students must be selected from the remaining n students. The number of ways to select 2 non-adjacent students in this case is C(n).
If the additional student is not selected, then we are left with n students. The number of ways to select 2 non-adjacent students in this case is D(n-1).
Therefore, the recurrence relation for the circular arrangement is:
D(n) = C(n) + D(n-1)
By applying the recurrence relations, we can calculate the number of ways to select 2 non-adjacent students for both linear and circular arrangements.

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The location of point b on the number line is 8.25.

To find the location of point b on the number line, we need to determine the value that satisfies the ratio of ab:bc being 3:1.

Let's assume that the location of point b is represented by the variable x.

Given that the ratio of ab:bc is 3:1, we can set up the following equation:

ab/bc = 3/1

To find the length of ab and bc, we subtract the respective coordinates:

ab = x - 6

bc = 9 - x

Now we can substitute these values into the equation:

(x - 6)/(9 - x) = 3/1

To solve this equation, we can cross-multiply:

1 * (x - 6) = 3 * (9 - x)

Simplifying the equation:

x - 6 = 27 - 3x

Combine like terms:

4x = 33

Divide both sides by 4:

x = 33/4 = 8.25

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Answer:

the answer is C. :D

Answer:

second choice 12,000(0.9)ˣ

Step-by-step explanation:

The equation for the value of the motorcycle can be modeled as follows

V = 12000(1- r)ˣ  where r is the rate of decine

1- r must be less than 1 since the value is decreasing

We can eliminate the first and third choices which show the value as increasing.

The value of the motorcycle at x = 0 is 12,000

Therefore the correct choice is the second choice 12,000(0.9)ˣ

The last choice is wrong- it's showing the base price as 10,800

Step-by-step explanation:

Statements

Reasons

1. PQ || MN

1. Given

2. O is the midpoint of NP

2. Given

3. NO = OP

3. Definition of midpoint

4. ∠ZMO = ∠QOP

4. Alternate interior angles are congruent (corresponding angles of parallel lines)

5. ∠LNMO = ∠LPQO

5. Alternate interior angles are congruent (corresponding angles of parallel lines)

6. ΔMNO ≅ ΔPRO

6. Angle-side-angle (ASA) congruence theorem

7. AMNO ≅ AQPO

7. Corresponding parts of congruent triangles are congruent (CPCTC)

Answer:

A. 4 2/3

Step-by-step explanation:

4(x-8) > 3 - (2x + 7)

4x-32 > 3 -2x -7

4x - 32 > -4 -2x

6x -32 > -4

6x > 28

divide both sides by 6

6 divide by 6 is 1

28 divide by 6 is simplified to 14/3 which can be changed into a mixed number 4 2/3

25% is 50% of 50.

Explaination is on the picture.

50% of 100 is 50.

A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100.

Let x be a number such that

50% of x is 50

This forms an equation in one variable which can be solved by transposition.

\(50/100\times x = 50\)

x/2=50

On multiplying 2 both sides,

\(X/2\times 2 =50\times 2\)

X=100

Thus, 50% of 100 is 50.

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Correct question:

50% of what is 50.

Answer:

241 mm^2.

Step-by-step explanation:

There are 10 mm in a cm so there are 10*10 = 100 mm^2 in  a cm^2.

So the answer is 2.41 * 100 = 241 mm^2.

Answer:

241mm²

Step-by-step explanation:

If 10mm = 1cm,

then 100mm² = 1cm²

2.41 × 100 = 241mm²

177.8 centimeters.

The shortest distance between the tip of the cone and its rim:

cos θ= base/Hypotenuse

cos 77°=\(\frac{40}{H}\)

\(0.22495=\frac{40}{H}\)

\(H=177.8\)

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The shortest distance between the tip of the cone and its rim exits 51.11cm.

If you draw a line along the middle of the cone, you'd finish up with two right triangles and the line even bisects the angle between the sloping sides. The shortest distance between the tip of the cone and its rim exists in the hypotenuse of a right triangle with one angle calculating 38.5°. So, utilizing trigonometry and allowing x as the measurement of the shortest distance between the tip of the cone and its rim.

Cos 38.5 = 40 / x

Solving the value of x, we get

Multiply both sides by x

\($\cos \left(38.5^{\circ}\right) x=\frac{40}{x} x\)

\($\cos \left(38.5^{\circ}\right) x=40\)

Divide both sides by \($\cos \left(38.5^{\circ}\right)$\)

\($\frac{\cos \left(38.5^{\circ}\right) x}{\cos \left(38.5^{\circ}\right)}=\frac{40}{\cos \left(38.5^{\circ}\right)}\)

simplifying the above equation, we get

\($x=\frac{40}{\cos \left(38.5^{\circ}\right)}\)

x = 51.11cm

The shortest distance between the tip of the cone and its rim exits 51.11cm.

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Answer:

x = 3.3

Step-by-step explanation:

A equation is given to us and we need to solve out for x. The given equation is ,

\(\sf\longrightarrow 5^{x -2}= 8 \)

Take log on both sides with base as " 10" . We have ,

\(\sf\longrightarrow log_{10} 5^{x-2}= log_{10}\ 8\)

Simplify using the property of log , \(\sf log a^m = m log a \) , we have ,

\(\sf\longrightarrow ( x -2) log_{10} 5 = log_{10} 8 \)

Simplify ,

\(\sf\longrightarrow ( x -2 ) log_{10}5 = log_{10} 2^3\)

Again simplify using the property of log ,

\(\sf\longrightarrow (x-2) log 5 = 3 log 2\)

We know that log 5 = 0.69 and log 2 = 0.301 , on substituting this , we have ,

\(\sf\longrightarrow ( x - 2 ) = \dfrac{ 3\times 0.301}{0.69}\)

Simplify the RHS ,

\(\sf\longrightarrow x - 2 = 1.30 \)

Add 2 both sides ,

\(\sf\longrightarrow \boxed{\blue{\sf x = 3.30}}\)

Hence the Value of x is 3.30 .

Answer:

its actually 3.292 because we round to the nearest thousandth and thats not even the equation you use above

Step-by-step explanation:

For this equation we use the formula log a^m=m (log a) so the equation will be written as log 5 (5^x-2) = log 5 (8). You use the base, which is 5, and use log to base 5 on both sides of the equation. Then you take the exponent " x-2" and write( x-2) log 5 (5) = log 5(8). Since log a =1, you multiply that 1 by x-2, which keeps it x-2. Making the equation x-2 = log 5 (8). Next, we use the change of the base properties with the formula log b^y= log y/ log b. The equation will be written as x-2 = log 8/ log 5, since 5 is the base it stays in the bottom or basement. We then add +2 to both sides of x-2 and log 8/ log 5. To solve this equation, you can find out what log 8 and log 5 are and divide those and add +2 to solve. So log 8 = 0.903 and log 5 = 0.698970 and divide those to get 1.29190 +2 and you get the answer rounded as 3.292. 

Answer:

Only part a; still haven't figured out b

Step-by-step explanation:

For a) the answers would be:

x: -5 0 3

y: -3 2 5

The equation says add y = x+2

Replace x with let's say -5, and we get y = -5+2

-5+2=-3

Answer:

uhhhhhhhh so vampires

Step-by-step explanation:

werewolf ugly-_-

Answer:

Step-by-step explanation:

Vampires

238,900 rounded to the nearest or the ten thousands place:

C. 240,000

Answer:

Step-by-step explanation:

answer is b

Answer: GH=16

Step-by-step explanation:

Equal triangles have equal sides

Answer:

They are

Step-by-step explanation:

28:32 is equal to 7/8

Answer:

-5.4 degrees

Step-by-step explanation:

First get the time passed by subtracting 2:00 pm from 8:00 pm, which will give you 6 hrs, you can then multiuply 6 hrs by -3.4 (temp changed per hr) and you will get -20.4. You then add together -20.4 and 15 to get -5.4 degrees.

Answer:

do u need to isolate the variables?

Step-by-step explanation:

Answer:

A.)

Lower Value = 295

Upper Value = 485

B.)

Lower Value = 200

Upper Value = 580

C.)

Lower Value = 105

Upper Value = 675

Step-by-step explanation:

Given that mean (M) = 390

Standard deviation (σ) = 95

Lower Value = mean value - number of standard deviations specified

Upper Value = mean value + number of standard deviations specified

a. Μ ± 1σ of the observations lie between what two values?

Lower Value = 390 - 1(95) = 295

Upper Value = 390 + 1(95) = 485

b. Μ ± 2σ of the observations lie between what two values?

Lower Value = 390 - 2(95) = 200

Upper Value = 390 + 2(95) = 580

c. Μ ± 3σ of the observations lie between what two values?

Lower Value = 390 - 3(95) = 105

Upper Value = 390 + 3(95) = 675

The formula for estimating the bending allowance is represented as follows:

Bending allowance = Kba x T x ((π/180) x R + Kf x T)

Where,Kba is the bending allowance coefficient

T is the sheet thickness

R is the bending radius

Kf is the factor for springback

π is the mathematical constant “pi”.

The Kba value of 0.33 and 0.50 is interpreted as follows:If the bending allowance coefficient (Kba) has a value of 0.33, then it means that the bending angle is less than 90 degrees and the sheet thickness is between 0.8 mm to 3 mm.

If the bending angle is more than 90 degrees, then the value of Kba will change to 0.50.The value of Kba determines the amount by which the sheet metal is stretched while it is bent.

If the sheet metal is stretched too much during bending, it may crack or tear. Hence, Kba is important as it enables the calculation of the required bending allowance, ensuring that the bending process does not cause any damage to the sheet metal.

The factor for springback (Kf) is multiplied by the thickness (T) and the bending radius (R) in the formula, and it indicates the amount of springback that will occur during the bending process.

The value of Kf depends on the material properties and the bending angle.

Therefore, it is necessary to choose the correct value of Kf based on the material properties and the bending angle.

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The value of the angle marked t in the diagram is determined as 80⁰.

The value of the angle marked t in the diagram is calculated by applying circle theorem as follows;

For this given problem, we will apply the circle theorem that states that the angle subtended at the center of the circle is twice the angle subtended at the circumference of the circle.

The value of the angle marked t in the diagram is calculated as;

2t = 160⁰

divide both sides of the equation by 2;

2t / 2 = 160 / 2

t = 80⁰

Thus, the value of the angle marked t in the diagram is calculated by applying circle theorem.

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Answer:

(a)

Coordinate A: (0,-3)

Coordinate B: (1,0)

Coordinate C: (5,2)

(b)

1, 5, 6, 7

Answer:

15.20,15.50

Step-by-step explanation:

Answer:

Y= 8X + 4

Step-by-step explanation:

The measure of angle x is 70°  

For a triangle, the exterior angle is the angle formed by extending one of the sides of the triangle

The Triangle Exterior Angle Theorem states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.

Here we have

A triangle where 105° is an exterior angle

And 'x' is an interior angle

Name the given triangle as given below

If we take AC as Transversal which cuts AB and DC  

=> ∠A = 35°    [ Alternate Interior Angles ]      

In a triangle,

The measure of an exterior angle will equal to the sum of measures of opposite interior angles.  

=> x° + 35° = 105°  

=> x° = 105° - 35°  

=> x° = 70°  

Therefore,

The measure of angle x is 70°

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Answer:

10

Step-by-step explanation:

Answer:

26 - 16=10 is your answer