Jenny has $2.40 deducted from her monthly allowance every time she forgets to do a chore. If she forgets three times in one month, what will be the change in Jenny's total allowance?​

The solution to the expression 8 * 3 / (4² - 13) + 5² + 4 * 3 is 45.

An equation is an expression that shows the relationship between two or more numbers and variables.

Given the equation:

8 * 3 / (4² - 13) + 5² + 4 * 3

To solve this question we use PEDMAS. That is parenthesis, then exponents, division, multiplication, addition and subtraction.

First solving the exponents to get:

= 8 * 3 / (16 - 13) + 25 + 4 * 3

Then solving the bracket:

= 8 * 3 / 3 + 25 + 4 * 3

Performing the division:

= 8 * 1 + 25 + 4 * 3

Performing the multiplication:

= 8 + 25 + 12

Performing the addition:

= 45

The solution to the expression is 45.

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Answer:

Explanation: Slope is the ratio of the vertical and horizontal changes between two points on a surface or a line. ... If coordinates of any two points of a line are given, then the rate of change is the ratio of the change in the y-coordinates to the change in the x-coordinates.

Step-by-step explanation:

Answer:

That would be 3 glasses

Step-by-step explanation:

Because if you 1/3 only fits one cup, then you would need 3 glasses to fill the apple juice.

Answer:

habla no espanyol

Step-by-step explanation:

Answer:

The number of values we can get on a standard number cube is 1,2,3,4,5,6 - and so 6 values.

Step-by-step explanation:

Answer:

all 3 options are true : A, B, C

Step-by-step explanation:

warning : it has come to my attention that some testing systems have an incorrect answer stored as right answer for this problem.

they say that A and C are correct.

but I am going to show you that if A and C are correct, then also B must be correct.

therefore, my given answer above is the actual correct answer (no matter what the test systems say).

originally the information about the alignment of the point F in relation to point E was missing.

therefore, I considered both options :

1. F is on the same vertical line as E.

2. F is not on the same vertical line as E.

because of optical reasons (and the - incomplete - expected correct answers of A and C confirm that) I used the 1. assumption for the provided answer :

the vertical line of EF is like a mirror between the left and the right half of the picture.

A is mirrored across the vertical line resulting in B. and vice versa.

the same for C and D.

this leads to the effect that all 3 given congruence relationships are true.

if we consider assumption 2, none of the 3 answer options could be true.

but if the assumptions are true, then all 3 options have to be true.

now, for the "why" :

remember what congruence means :

both shapes, after turning and rotating, can be laid on top of each other, and nothing "sticks out", they are covering each other perfectly.

for that to be possible, both shapes must have the same basic structure (like number of sides and vertices), both shapes must have the same side lengths and also equally sized angles.

so, when EF is a mirror, then each side is an exact copy of the other, just left/right being turned.

therefore, yes absolutely, CAD is congruent with CBD. and ACB is congruent to ADB.

but do you notice something ?

both mentioned triangles on the left side contain the side AC, and both triangles in the right side contain the side BD.

now, if the triangles are congruent, that means that each of the 3 sides must have an equally long corresponding side in the other triangle.

therefore, AC must be equal to BD.

and that means that AC is congruent to BD.

because lines have no other congruent criteria - only the lengths must be identical.

2)

When we say that w = 4, it means that we can rewrite the expression and instead of "w", we will put "4", so

Now we have a numerical expression to solve, we can easily solve it!

Therefore, the final answer is

5)

Here we will do the same thing, the "hard" part is solving the numeric expression, it will be a little bit harder than the 2).

Again, repeat the same process, rewrite the expression, and instead of "m" you put "5"

Again, another expression to simplify, remember that we always solve what is inside ( ) first, and we have a multiplication inside ( ) so we must solve it first

Now we solve the multiplication inside ( ) we can do the subctration

The last step is just to solve another multiplication

Now we simplified everything we can have the final answer:

6)

Here we have a division, but it's similar with 5) and 2), we have

No secrets, repeat the process, but here, "a" will turn into "15", then

We can do the multiplication at the numerator of the fraction

Now we can simplify the fraction, 30 divided by 3 is 10, then

Now just do the sum and it's done!

Hence the final answer is

ANSWERS:

1) 43

2) 13

3) 67

4) 12

5) 39

6) 23

Therefore, the probability that the student attends class on a certain Friday is 1/2, and the probability that the student is absent is also 1/2. The long-run probability that the student either attends class or does not attend class is simply 1, since these are the only two possible outcomes.

Let's use A to represent the event that the student attends class on a certain Friday, and let's use B to represent the event that the student is absent on a certain Friday. We are asked to find the long-run probability that the student either attends class or does not attend class.

We can use the law of total probability and consider the two possible scenarios:

Scenario 1: The student attends class on a certain Friday

If the student attends class on a certain Friday, then the probability that she will attend class the next Friday is 1/3, and the probability that she will be absent is 2/3. Therefore, the probability that the student attends class on two consecutive Fridays is:

P(A) * P(A|A) = P(A) * 1/3

Scenario 2: The student is absent on a certain Friday

If the student is absent on a certain Friday, then the probability that she will attend class the next Friday is 4/5, and the probability that she will be absent again is 1/5. Therefore, the probability that the student is absent on two consecutive Fridays is:

P(B) * P(A|B) = P(B) * 4/5

The probability that the student attends class or is absent on a certain Friday is 1, so we have:

P(A) + P(B) = 1

Now we can solve for P(A) and P(B) using the system of equations:

P(A) * 1/3 + P(B) * 4/5 = P(A) + P(B)

P(A) + P(B) = 1

Simplifying the first equation, we get:

2/3 * P(B) = 2/3 * P(A)

P(B) = P(A)

Substituting into the second equation, we get:

2 * P(A) = 1

P(A) = 1/2

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Answer:

(4, -5)

Step-by-step explanation:

completing the square:

x^2 - 8x + 11 = 0

(x-4)^2 + 11 - (-4)^2 = 0

(x-4)^2 + 11 - 16 = 0

(x-4)^2 -5 = 0

minimum point = (4, -5)

Answer:

-5

Step-by-step explanation:

Use the vertex form, y=a(x−h)2+ky=a(x-h)2+k, to determine the values of aa, hh, and kk.

a=1a=1

h=−4h=-4

k=−5

Answer:

1/2

Step-by-step explanation:

When you roll a 6-sided die, there are 6 possible outcomes:

1, 2, 3, 4, 5, 6

3 of the outcomes are even, and 3 of the outcomes are odd.

p(A) = p(even) = 3/6 = 1/2

p(Ac) = 1 - p(A) = 1 - 1/2 = 1/2

The apothem is the perpendicular distance from the center of a regular polygon to any one of its sides.

A closed, two-dimensional, flat or planar structure with straight sides is referred to as a polygon. Its sides do not bend in any way. A polygon's sides are also referred to as its edges. A polygon's vertices (or corners) are the places where two sides converge. Polygons and polyhedrons are two names for geometric shapes having three or more sides. The names of a few polygons are listed below. In order to link and develop projects and blockchains that are compatible with Ethereum, Polygon (MATIC), a cryptocurrency and technological platform, was introduced. A polygon is a fully closed, two-dimensional (2D), flat form with straight sides (all the sides are joined up). They must have straight sides. Any number of sides can be found in polygons.

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Answer:

x = 2, y = 4

Step-by-step explanation:

First we isolate and solve for x

y = 6x-8

y= -3x+10

6x-8 = -3x + 10

9x-8 = 10

9x = 18

x=2

Now we solve for y by inserting x into one of the equations

y = -3(2)+10

y = -6 + 10

y = 4

When x = 40,

6 + 0.5x = 26

Statistical significance refers to the likelihood that the association between two variables is not due to chance alone. In other words, it is a measure of the probability that the observed relationship between two variables is real and not just a result of random variation or sampling error.

When analyzing data, researchers often use statistical tests to determine whether there is a significant association between two variables. A p-value is calculated, which represents the probability that the observed relationship between the variables is due to chance. If the p-value is less than a predetermined threshold (usually 0.05), the results are considered statistically significant, and the researchers can conclude that there is a real association between the variables. It's important to note that statistical significance does not necessarily imply practical significance. Just because a relationship is statistically significant does not mean that it is important or meaningful in real-world terms. Additionally, statistical significance only tells us about the strength of the relationship between two variables, not about causation or directionality. Therefore, it is always important to interpret statistical significance in the broader context of the research question and study design.

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Answer:

I believe that the answer is C: 72 cm²

Answer:

92

Step-by-step explanation:

83*4 = 332

And 80*3 = 240

332-240 = 92

So you would need 92

Answer:

i need help

Step-by-step explanation:

Answer:

a. The distribution of X will be X ~ N (27557, 6707^2). This means that X follows a normal distribution with a mean (μ) of $27,557 and a variance (σ^2) of $44,903,649 (which is the square of the standard deviation $6,707).

b. To find the probability that a randomly selected Private nonprofit four-year college will cost less than $32,293 per year, we first need to find the z-score for $32,293. The z-score is calculated using the formula:

Z = (X - μ) / σ

So, for X = $32,293, the z-score will be:

Z = (32293 - 27557) / 6707 ≈ 0.7070

Next, we refer to the standard normal distribution table (Z-table) or use statistical software to find the probability associated with this z-score. The probability for Z=0.7070 is approximately 0.7599. So, the probability that a randomly selected Private nonprofit four-year college will cost less than $32,293 per year is approximately 0.7599, or 75.99%.

c. The 65th percentile is the value below which 65% of the data falls. In a standard normal distribution, this is the z-score associated with the cumulative probability of 0.65. Using a standard normal distribution table or statistical software, we find that the z-score for the 65th percentile is approximately 0.3853.

Next, we use the formula for the z-score to find the corresponding X value:

X = Z*σ + μ

Plugging in the values:

X = 0.3853 * 6707 + 27557 ≈ $28,147

So, the 65th percentile for this distribution is approximately $28,147. This is rounded to the nearest dollar.

Answer:

distance = 11.1803 units

midpoint :  (-1.5, 6).

Step-by-step explanation:

To plot the points A(4, 5) and B(-7, 7) on the grid, we locate the points at the coordinates (4, 5) and (-7, 7) respectively.

The distance between two points (x1, y1) and (x2, y2) can be calculated using the distance formula:

d = √((x2 - x1)^2 + (y2 - y1)^2)

Plugging in the values for A and B, we get:

d = √((-7 - 4)^2 + (7 - 5)^2)

d = √(11^2 + 2^2)

d = √(121 + 4)

d = √125

d = 11.1803 (rounded to hundredths place)

The midpoint of two points (x1, y1) and (x2, y2) can be calculated as follows:

x = (x1 + x2) / 2

y = (y1 + y2) / 2

The midpoint of A and B is:

x = (4 - 7) / 2 = -1.5

y = (5 + 7) / 2 = 6

So the midpoint of A and B is approximately (-1.5, 6).

Answer:

25.55

Step-by-step explanation:

Let us take the number he thinked of be x .

On doubling it :-

→ N = 2x

On adding 19 :-

→ N = 2x + 19

According to Question :-

→ 2x + 19 = 70.1

→ 2x = 70.1 - 19

→ 2x = 51.1

→ x = 51.1/2

→ x = 25.55

Therefore, Pump B will have a longer average cycle time compared to Pump A.

To determine which pump will have a longer average cycle time, we need to calculate the cycle time for each pump based on the given information and compare the results. The cycle time for a single-server system can be calculated using Little's Law: Cycle Time = (1 / Arrival Rate) * (1 / (1 - Utilization))

Given:

Arrival Rate = 0.2 car per minute

Squared-Coefficient of Variation (CV^2) for Arrival Rate = 1

Utilization can be calculated as the product of the mean effective process time and the arrival rate:

Utilization = Mean Effective Process Time * Arrival Rate

For Pump A:

Mean Effective Process Time (A) = 4 minutes

Squared-Coefficient of Variation for Pump A = 0.5

Utilization (A) = 4 * 0.2 = 0.8

For Pump B:

Mean Effective Process Time (B) = 3 minutes

Squared-Coefficient of Variation for Pump B = 5

Utilization (B) = 3 * 0.2 = 0.6

Now, let's calculate the cycle time for each pump:

Cycle Time (A) = (1 / 0.2) * (1 / (1 - 0.8))

= 5 minutes

Cycle Time (B) = (1 / 0.2) * (1 / (1 - 0.6))

= 2.5 minutes

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Inaccurate density values can result from various factors such as measurement errors, impurities in the sample, incorrect calculations, or inconsistent experimental conditions.

Density is a physical property that represents the mass of a substance per unit volume. When obtaining density values, it is crucial to ensure accurate measurements of both mass and volume. Any errors in measuring the mass or volume of the sample can lead to inaccurate density calculations. Common sources of measurement errors include using imprecise or faulty measuring instruments, incorrect reading of values, or not properly accounting for the presence of air bubbles or moisture.

Impurities present in the sample can also affect density measurements. If the sample contains contaminants or substances with different densities, the overall density value may be skewed. It is important to ensure that the sample being tested is pure and does not contain any foreign substances that could alter the density.

Moreover, inconsistent experimental conditions such as variations in temperature or pressure can influence the density of a substance. Density is temperature-dependent, and fluctuations in temperature can lead to variations in the density values obtained. It is essential to conduct experiments under controlled conditions to minimize the impact of such variables.

In the case of the cube of butter or margarine in water, the density of butter is lower than that of water. Due to its lower density, the cube of butter will float in water. The density of water is approximately 1 g/cm³, while the density of butter is around 0.9 g/cm³. Since the density of the cube of butter is less than the density of water, it will experience an upward buoyant force greater than its weight, causing it to float.

When drops of a saturated salt solution are added to pure water, the salt solution is denser than water. This is consistent with the fact that a saturated salt solution has a higher density than pure water. The addition of the salt solution increases the overall density of the water, causing the drops to sink. This observation aligns with the principle that objects with higher density than the surrounding medium will sink.

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Ellen can make a maximum of 6 batches of Cardamom cookies with her 2 fluid ounces of cardamom.

Ellen has 2 fluid ounces of cardamom in a jar. Her recipe requires 3/10 of a fluid ounce of cardamom for each batch of cardamom cookies.

We can use division to find the number of batches of cardamom cookies that Ellen can make with all of her cardamom:

2 fluid ounces ÷ (3/10 fluid ounce per batch) = (2/1) ÷ (3/10)

= (2/1) x (10/3)

= 20/3

= 6 2/3

Therefore, Ellen can make 6 batches of cardamom cookies with her 2 fluid ounces of cardamom, with 2/3 of a batch remaining.

Since she cannot make a fraction of a batch, Ellen can make a maximum of 6 batches of cardamom cookies with her 2 fluid ounces of cardamom.

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1 tablespoon is equivalent to 3 teaspoons

To find the equivalence of 3 1/3 tablespoons in teaspoons, we can use the next proportion:

Solving for x:

Barbara must use 10 teaspoons

a). the velocity of the rocket at the end of the engine burn time is 158.4 m/s (upwards).

b). the total time for the rocket to reach the maximum height is given by,t = t₁ + t₂t = 20 + 32.8t = 52.8 s.

c). the total time of flight is given by,t = t₁ + t₂t = 20 + 32.8t = 52.8 s.

(a) Velocity of the rocket (in m/s) at the end of the engine burn time: Initial speed of rocket, u = 80.4 m/s. Acceleration of the rocket when it is moving up from the silo to an altitude of 980 m, a = 3.90 m/s²Time taken to reach an altitude of 980 m, t = ?The formula for calculating the displacement of an object is given by, s = ut + (1/2) at²Where,s = 980 m, u = 80.4 m/s, a = 3.90 m/s².Substituting the values in the above equation, we get980 = 80.4t + (1/2) 3.90t²On solving this equation, we get, t = 20 s. As the rocket continues to move up with zero velocity until its engine stops working, therefore the velocity of the rocket at the end of the engine burn time is given by, v = u + at, v = 80.4 + 3.90 × 20v = 158.4 m/s. Therefore, the velocity of the rocket at the end of the engine burn time is 158.4 m/s (upwards).

(b) Maximum altitude of the rocket (in m):Using the third equation of motion,v² = u² + 2asWhere,u = 80.4 m/s, v = 0 m/s, a = -9.80 m/s², s = ?Substituting the values in the above equation,0 = (80.4)² + 2 (-9.80) ss = 3260.4 m. Therefore, the maximum altitude of the rocket is 3260.4 m. Total time (in s) for the rocket to reach this altitude from ground level: T he time taken to reach the maximum height, t1 is given by, v = u + at₁₀ = 80.4 + 3.90t₁...Equation (1)For the free fall of the rocket, the time taken to reach the maximum height, t2 is given by,v² = u² + 2gs3260.4 = (0)² + 2 (-9.80) st₂ = √(3260.4/4.90)t₂ = 32.8 s...Equation (2), Therefore, the total time for the rocket to reach the maximum height is given by,t = t₁ + t₂t = 20 + 32.8t = 52.8 s.

(c) Velocity (in m/s) just before ground impact: From equation (2), t = 32.8 s. Using the second equation of motion, v = u + at, v = 0 + (-9.80) × 32.8v = -321.4 m/s. As the direction of motion is downwards, therefore the velocity just before ground impact is -321.4 m/s. Total time of flight (in s):The time taken to reach the maximum height, t₁ = 20 s. The time taken to return to the ground, t₂ = 32.8 s. Therefore, the total time of flight is given by,t = t₁ + t₂t = 20 + 32.8t = 52.8 s.

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Answer:

Min: 143

Q1: 150

Med: 161

Q3: 168

Max: 180

Step-by-step explanation:

The line in the box means median, The line furthest to the right is the highest number, the line furthest to the left is the lowest number. The lines that create the box are (from left to right) the first quartile and the third quartile.

The answer from left to right:

143

152

161

168

180

Answer:

If it is from figure O to figure P, it is a translation 3 units right and 2 units down

If it is from figure P to figure O, it is a translation 3 units left and 2 units up

Step-by-step explanation:

Answer:

y=3x+5

Step-by-step explanation:

y=mx+c

2=3(-1)+c

2=-3+c

c=5

Answer:

y=3x+5

Step-by-step explanation:

22. CT.K1 is located in pin 43.23. The cascoding of the sequence of the state machine in the VHDL code above is D. BCD.24. The VHDL statement that requires that all possible valid inputs have been accounted for is D. case.25.

Distributive Factor Term.27. The flip-flop is found in a macrocell in a typical CPLD.28. The VHDL code above contains an error on which of the following lines: D. 12.29. The VHDL code above is best described as D. inverter.32. A VHDL architecture describes A. the operation of a logic function.33.

An example of VHDL data flow architecture is A. a Karnaugh map. Basically, VHDL is used to design digital circuits. VHDL can be used for the design of digital circuits as well as the verification of digital circuits.

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Step-by-step explanation:

x=3

y=19

hope this helps if u need me to explain u can ask hope it helps