Can someone help me with this but with a good explanation plz also can nobody answer just to answer to get points plz I really need help with this

Answer:

36

Step-by-step explanation:

Answer:

y is 96 when x is 12

Step-by-step explanation:

If x and y vary directly, it means that they are proportional to each other. Mathematically, we can write this relationship as:

y = kx

where k is the constant of proportionality.To find the value of k, we can use the information given in the problem. We know that when x is 6, y is 48. Substituting these values in the equation above, we get:

48 = k * 6

Solving for k, we get:k = 8

Now that we know the value of k, we can use the equation to find y when x is 12:

y = kx

y = 8 * 12

y = 96

Therefore, when x is 12, y is 96.

also in my head I just said if 12 is double of 6, just double 48, which is 96. but that doesn’t always work so that’s why I provided “correct” work above

The height of the student who weighs 146 pounds is around 67.5 inches as observed on the given graph.

A line graph is a type of graph that uses points and lines to show change over time. In other words, a line connecting numerous points or a line illustrating the relationship between the points is shown on the chart. The graphis a  quantitative data between two changing variables by connecting a succession of subsequent data points with a straight line or curve. On a vertical and horizontal axis, linear charts contrast these two variables.

The height of the student who weighs 146 pounds can be evaluated, by

observing the given graph.

The weight is on x- co ordinate and height is on y- coordinate of the given graph.

if we see the weight at 146 pounds on x-axis, we cxan clearly see at the same point the graphs gives y co-ordinate that is height value as 67.5 inches.

so, Option (a) is correct.

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Answer:c

Step-by-step explanation:

A and D are incorrect just by the fact that they dont open downward(arch) B. Is also incorrect because the y intercept 10 doesn’t include the focus point 20 also u can use this calculator called parabola calculator to pin point focus and directive just in case u want to check my answer. C is most correct because it has intercept 30 including focus point 20...(SHOUT OUT TO ILT)

In linear functions, there is a constant difference between the y-values on a table. This means that it increases or decreases by the same amount per every equal interval.

For instance: 2, 4, 6, 8 ⇒ Constant difference of 2 every 1 term

To find the constant difference for this set of values, determine the constant difference (y), and by what interval this difference occurs (x).

Looking at the first two rows of the table, we now know that for every increase in 3 in the x-values yields an increase of 15 in the y-values.

We can write it like a fraction, with difference in y on top and difference in x at the bottom:

\(\dfrac{15}{3}\) ⇒ \(5\)

Congratulations! We have now found the slope of the line.

Linear equations are typically organized in slope-intercept form:

\(y=mx+b\)

Plug in our slope, and solve for the y-intercept by using one of the given points from the table:

\(y=5x+b\\-10=5(-1)+b\\-10=-5+b\\b=-5\)

Plug this back into the equation:

\(y=5x-5\)

To find n, plug in 20 as y and solve:

\(20=5n-5\\25=5n\\n=5\)

n = 5

Answer:

19

Step-by-step explanation:

A' represents everything out A

B' represents everything out B

C' represents everything out C

So only the outside is left hope this helps

Step-by-step explanation:

The midsegment is half of the side side AC.

Half of 38=18

DE=19

Step-by-step explanation:

\(\longrightarrow\sf{ p(x) = 2{x}^{4} - 5{x}^{3} + 7x - 3}\)

\(\longrightarrow\sf{ p(2) = 2({2})^{4} - 5{2}^{3} + 7\times 2 - 3}\)

\(\longrightarrow\sf{ 2\times 16 - 5\times 8 + 14 - 3}\)

\(\longrightarrow\sf{ 32 - 40 + 14 - 3}\)

\(\longrightarrow\sf{ - 8 + 14 - 3}\)

\(\longrightarrow\sf{ + 6 - 3}\)

\(\longrightarrow\sf{ 3 }\)

Answer:

Step-by-step explanation:

f(x) = 2x⁴ - 5x³ + 7x - 3

f(2) = 2(2^4) - 5(2^3) + 7(2) - 3

f(2) = 32 - 40 + 14 - 3

f(2) = 3

The graph below shows what happens when x = 2 and y = 2x⁴ - 5x³ + 7x - 3

Notice that the graph shows the same intersect point (2,3) as what we got when putting x = 2  into the equation.

Answer:

-248.15°C

Step-by-step explanation:

An object in a laboratory is cooled to 25 Kelvin. What is the temperature of the object in degrees Celsius?

The formula that converts from Kelvin to degrees Celsius =

Celsius = (Kelvin – 273.15)

Kelvin = 25K

Hence:

°C = 25 - 273.15

°C = -248.15°C

Therefore, the temperature of the object in degrees Celsius is -248.15°C

Answer:-248

Step-by-step explanation:

Answer:

first 4 options..

. mark me the Brainliest.. pls

So,

First, remember that:

Given a function f(x). If we make the following changes to it (where c is a number), they will represent:

1. Horizontal translation.

The expression above represents a horizontal translation.

So, if we have f (x - 3) this is a horizontal translation 3 units to the right.

If the sign is positive, the graph moves to the left and if it's negative, it moves to the right.

2. Vertical translation:

The expression above represents a vertical translation.

So, if we have f(x) + 2, this change represents a vertical translation 2 units up.

If the sign is positive, the graph moves c units up, and if it is negative, the graph moves c units down.

3. X-axis reflection.

The expression above represents a X-axis reflection.

So, given -f(x), that's a reflection over the x-axis.

4. y-axis reflection.

The expression above represents a y-axis reflection.

So, given f(-x), that's a reflection over the y-axis.

5. Horizontal compression:

If |c| is greater than 1, this is a horizontal compression.

If |c| is between 0 and 1, this is a horizontal stretch.

In our problem, we are given f(3x), and, as 3 is greater than 1, we have a horizontal compression.

6. Vertical stretch:

If |c| is greater than 1, this is a horizontal compression.

If |c| is between 0 and 1, this is a horizontal stretch.

\(\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{20\% of 1500}}{\left( \cfrac{20}{100} \right)1500}\implies 300~\hfill \stackrel{\textit{cost of the book on sale}}{1500-300\implies 1200}\)

Answer:

x = 3

Step-by-step explanation:

Is x an exponent?

\( y = 3^x \)

\( 27 = 3^x \)

\( 3^3 = 3^x \)

\( x = 3 \)

Solve each equation in steps:

Answer:

Step-by-step explanation:

1) 2(3b + 6) = 78, value of b?

→ 2(3b + 6) = 78

→ 6b + 12 = 78

→ 6b = 78 - 12

→ 6b = 66

→ b = 66/6

→ [ b = 11 ]

Hence, the value of b is 11.

2) -2(6c - 3) = -72, value of c?

→ -2(6c - 3) = -72

→ -12c + 6 = -72

→ -12c = -72 - 6

→ -12c = -78

→ c = (-78)/(-12)

→ c = 78/12

→ [ c = 6.5 ]

Hence, the value of c is 6.5.

Basically you can write taking from something or using something 20 times. Here are three examples.

Answer:

\( \boxed{ \bold{ \sf{Mean \: = 41.5}}}\)

\( \boxed{ \bold{ \sf{Median = \: 41}}}\)

Step-by-step explanation:

Given weights of the dogs :

38 , 40 , 42 , 46 , 45 , 39 , 42 , 40

Find the sum of the whole data:

sum of all items ( Σx ) = 38 + 40 + 42 + 46 + 45 + 39 + 42 + 40 = 332

Number of items ( n ) = 8

To find mean, divide the sum by the total number of data.

Finding the mean weights:

\( \boxed{ \sf{Mean = \: \frac{ Σx}{n}}} \)

⇒\( \sf{ \frac{332}{8} }\)

⇒\( \sf{41.5}\)

Mean weights = 41.5

-----------------------------------------------------------------------

Finding the median

To find the median, arrange the given data in ascending order.

Given data : 38, 40 , 42 , 46 , 45 , 39 , 42 , 40

Arranging the data in ascending order :

38 , 39 , 40 , 40 , 42 , 42 , 45 , 46

Total number of observation ( n ) = 8

Finding the position of median

\( \boxed{ \sf{Position \: of \: median = ( \frac{n + 1}{2} ) ^{th} item}}\)

⇒\( \sf{( \frac{8 + 1}{2} ) ^{th} item}\)

⇒\( \sf{( \frac{9}{2} ) ^{th} item}\)

⇒\( \sf{ {4.5}^{th} item}\)

4.5 th item is the average of 4 th and 5th items .

Here, 4 th item = 40

5 th item = 42

Finding the median

\( \boxed{ \sf{Median = ( \frac{{4}^{th} \: item + {5}^{th} item}{2}) }}\)

⇒\( \sf{ \frac{40 + 42}{2} }\)

⇒\( \sf{ \frac{82}{2} }\)

⇒\( \sf{41 }\)

Hope I helped!

Best regards!!

Answer:

A local dog show features 8 Portuguese water dogs. The weights of the dogs are 38, 40, 42, 46,

45, 39, 42, 40. What are the mean and median weights of the Portuguese water dogs in the dog

show?

Step-by-step explanation:

The value of the expression is 55.

Step 1: Simplifying the innermost parentheses

Inside the innermost parentheses, we have the expression (6 - 9 ÷ 3). We need to divide 9 by 3 first, which gives us 3. Now we can subtract 3 from 6, resulting in (6 - 3) = 3. Therefore, the expression becomes 83 - [29 - {6 ÷ 3 - 3 ÷ 3}].

Step 2: Simplifying the division inside the curly braces

Within the curly braces, we have the expression 6 ÷ 3. Dividing 6 by 3 gives us 2. Substituting this value back into the expression, we have 83 - [29 - {2 - 3 ÷ 3}].

Step 3: Simplifying the division inside the curly braces (again)

Inside the curly braces, we have 3 ÷ 3. Dividing 3 by 3 gives us 1. Substituting this value back into the expression, we have 83 - [29 - {2 - 1}].

Step 4: Simplifying the subtraction inside the curly braces

Within the curly braces, we have the expression 2 - 1, which equals 1. Substituting this value back into the expression, we have 83 - [29 - 1].

Step 5: Simplifying the subtraction inside the square brackets

Inside the square brackets, we have 29 - 1, which gives us 28. Substituting this value back into the expression, we have 83 - 28.

Step 6: Performing the subtraction

Finally, we subtract 28 from 83, resulting in 55.

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Euler circuit: Even n for Kn, Cn, and Wn; Even or 0 for On.

Hamilton cycle: All n ≥ 3 for Kn and Cn, n ≥ 4 for Wn; Only O1 has a Hamilton cycle among On..

Let's consider the following cases to determine the values of n for which the given graphs have an Euler circuit and a Hamilton cycle:

(a) Kn (complete graph with n vertices):

(i) An Euler circuit exists for Kn if and only if n is an even number (n ≥ 2).

(ii) A Hamilton cycle exists for Kn for all n ≥ 3.

(b) Cn (cycle graph with n vertices):

(i) An Euler circuit exists for Cn if and only if n is an even number (n ≥ 2).

(ii) A Hamilton cycle exists for Cn for all n ≥ 3.

(c) Wn (wheel graph with n vertices):

(i) An Euler circuit exists for Wn if and only if n is an even number (n ≥ 4).

(ii) A Hamilton cycle exists for Wn for all n ≥ 4.

(d) On (null graph with n vertices):

(i) An Euler circuit exists for On if and only if n is an even number (n ≥ 0).

(ii) A Hamilton cycle does not exist for On, except for O1 (a single vertex).

Therefore:

(i) Euler circuit: Even values of n for Kn, Cn, and Wn. Even and 0 for On.

(ii) Hamilton cycle: All n ≥ 3 for Kn and Cn. All n ≥ 4 for Wn. No Hamilton cycle for On, except for O1.

These conditions determine the values of n for which the graphs have an Euler circuit and a Hamilton cycle.

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The amount of money in Davinder's account after five years is equal to £236.

Mathematically, simple interest can be calculated by using this formula:

S.I = PRT or S.I = A - P

Where:

Substituting the given parameters into the simple interest formula, we have;

S.I = 200 × 4.5/100 × 5

S.I = 200 × 0.045 × 4

S.I = £36.

Next, we would calculate the future value as follows;

Future value, A = S.I + P

Future value, A = £36 + £200

Future value, A = £236.

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The probability that the policyholder is a home renter, given that a renter still has a policy one year after purchase, is approximately 0.260 or 26.0%.

Let H denote the event that the policyholder is a home renter, and A denote the event that the policyholder is an apartment renter. We are given that P(H) = 0.4 and P(A) = 0.6.

Let T denote the time from policy purchase until policy cancellation. We are also given that T | H ~ Exp(1/4), and T | A ~ Exp(1/2).

We want to calculate P(H | T > 1), the probability that the policyholder is a home renter, given that a renter still has a policy one year after purchase:

P(H | T > 1) = P(H and T > 1) / P(T > 1)

Using Bayes' theorem and the law of total probability, we have:

P(H | T > 1) = P(T > 1 | H) * P(H) / [P(T > 1 | H) * P(H) + P(T > 1 | A) * P(A)]

To find the probabilities in the numerator and denominator, we use the cumulative distribution function (CDF) of the exponential distribution:

P(T > 1 | H) = e^(-1/4 * 1) = e^(-1/4)

P(T > 1 | A) = e^(-1/2 * 1) = e^(-1/2)

P(T > 1) = P(T > 1 | H) * P(H) + P(T > 1 | A) * P(A)

= e^(-1/4) * 0.4 + e^(-1/2) * 0.6

Putting it all together, we get:

P(H | T > 1) = e^(-1/4) * 0.4 / [e^(-1/4) * 0.4 + e^(-1/2) * 0.6]

≈ 0.260

Therefore, the probability that the policyholder is a home renter, given that a renter still has a policy one year after purchase, is approximately 0.260 or 26.0%.

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Answer:

B,C,E

Step-by-step explanation:

khan academy

Side length of the scaled copy of square is smaller than original.

A scale factor is defined as the ratio between the scale of a given original object and a new object, which is its representation but of a different size (bigger or smaller).

Given,

Scale factor of scaled copy of square is less than 1.

Scale factor basically defines the ratio between the sides of the constructed square to that of the original square.

if scale factor is less than 1 then the sides of the constructed square is smaller than that of the original square.

Hence, side length of constructed square is smaller than the original square.

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Answer:

I think is the last answer 6 < x

The speed of the hawk increased by 3.04 - 1.28 = 1.76 ft/s from t = 4 to t = 8.

The acceleration after t seconds of a hawk flying along a straight path is a(t) = 0.8 + 0.12t ft/s²

From the given equation, we know that the acceleration of the hawk is a(t) = 0.8 + 0.12t ft/s².Using the formula v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken, we can find the final velocity of the hawk at t = 4 as follows:

v = u + atv = 0 + a(4) [Initial velocity is zero]v = 0 + (0.8 + 0.12(4))v = 0 + (0.8 + 0.48)v = 1.28 ft/s

Similarly, we can find the final velocity of the hawk at t = 8 as follows:v = u + atv = 1.28 + a(4) [Initial velocity is 1.28 ft/s]v = 1.28 + (0.8 + 0.12(8))v = 1.28 + (0.8 + 0.96)v = 3.04 ft/s

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Answer:

4) 3 for the numerator. 9 for the denominator

5) 6 for the first blank square and 48 for the second blank.

6) 2 for the denominator. 6 for the numerator. 30 for the second numerator.

Step-by-step explanation:

sorry but those are the only ones i know

Hope this helps!

The total arc length AB that the pendulum travels is approximately 13.96 inches.

To find the total arc length traveled by the pendulum, we can use the formula for the arc length of a pendulum given by:

Arc length (s) = θ × r

where θ is the angle in radians and r is the length of the pendulum.

However, in this case, we are given the angle in degrees, so we need to convert it to radians. The formula for converting degrees to radians is:

θ (in radians) = (π/180) × θ (in degrees)

Given that the angle is 80°, we can convert it to radians as follows:

θ (in radians) = (π/180) × 80° = (4π/9) radians

Now, we can calculate the arc length:

Arc length (s) = (4π/9) radians × 10 inches

The total arc length traveled by the pendulum is therefore:

Arc length (s) = (40π/9) inches

To approximate the answer, we can use the value of π as approximately 3.14:

Arc length (s) ≈ (40 × 3.14/9) inches

Arc length (s) ≈ 13.96 inches

Therefore, the total arc length AB that the pendulum travels is approximately 13.96 inches.

Please note that this calculation assumes that the pendulum swings in a perfect arc without any friction or external factors affecting its motion. In reality, there may be slight variations due to factors such as air resistance or imperfections in the pendulum's motion.

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Answer:

A brush: $4.50

A tube of paint: $2

Step-by-step explanation:

Let b = brushes

Let p = paint

1) Set up equations.

4b + 7p = 32

6b + 8p = 43

2) Solve the system of equations using elimination.

(4b + 7p = 32)3

(6b + 8p = 43)2

-----------------------

12b + 21p = 96

12b + 16p = 86

----------------------

5p = 10

p = 10/5

p = 2

Substitute 2 into p of any of the two equations.

4b + 7(2) = 32

4b + 14 = 32

4b = 32 - 14

4b = 18

b = 18/4

b = 4.50

Therefore, a brush costs $4.50, while a tube of paint costs $2.

Based on the given information, it is not possible to determine the p-value, decision to reject (rh0) or failure to reject (frh0) without additional data or context.

To assess whether the relaxation exercise slowed brain waves, a statistical analysis should be conducted on a sample from the population.

The analysis would involve measuring brain waves before and after the exercise and comparing the results using appropriate statistical tests such as a t-test or ANOVA. The p-value would indicate the probability of observing the data if there was no effect, and the decision to reject or fail to reject the null hypothesis would depend on the predetermined significance level.

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Answer:

\(Pr = \frac{1}{2}\)

Step-by-step explanation:

Given

\(S = \{1,2,3,4,5,6\}\) --- the faces of the dice

\(n(S) = 6\)

Required

Pr(Multiple of 8)

The multiples of 8 in the given dataset are:

\(Multiples = \{1.,2,4\}\)

\(n(Multiples) = 3\)

So, we have:

\(Pr = \frac{n(Multiples)}{n(S)}\)

\(Pr = \frac{3}{6}\)

Simplify

\(Pr = \frac{1}{2}\)