Harry took total of 27 quizzes over the course of 3 weeks

Answer:

254

Step-by-step explanation:

Answer: Changing the radius of an object by a given amount has a greater effect on the volume than changing the height by the same amount. The volume of a cylinder is given by the formula V = πr²h, where V is the volume, r is the radius, and h is the height. If we change the radius by a given amount, say x, the new radius would be r+x. Hence, the new volume would be V' = π(r+x)²h = π(r²+2rx+x²)h = V + 2πrxh + πx²h. We can see that the volume change equals 2πrxh + πx²h. The first term is proportional to both the radius and the height, whereas the second term is proportional to the square of the radius and the height. Assuming that the height change is also x, the new volume would be V'' = πr²(h+x) = V + πr²x. We can see that the volume change is proportional to the radius squared and the change in height. Therefore, changing the radius by a given amount has a greater effect on the volume than changing the height by the same amount.

Answer:

The surface is C

Step-by-step explanation:

Answer:

it is a square

because

as we can see in the graph the

distance from A to B is 5 cm

distance from B to C is 5 cm

distance from C to D is 5 cm

distance from D to A is 5 cm

please mark me as the brainliest I really need it

Inverse relationships between operations are used to solve two-step inequalities because they allow us to isolate the variable on one side of the inequality.

A two-step inequality involves two operations that need to be undone in reverse order to solve for the variable. Inverse relationships between operations are used to "undo" these operations, leading to an isolated variable.

For example, consider the inequality 2x + 5 > 11. The first operation being performed on x is multiplication by 2, and the second operation is adding 5. To solve for x, we need to undo these operations in reverse order.

The inverse relationship of multiplication by 2 is division by 2, and the inverse relationship of adding 5 is subtracting 5. Therefore, we can solve the inequality as follows:

2x + 5 > 11

2x > 6 (subtract 5 from both sides)

x > 3 (divide both sides by 2)

Here, we first subtracted 5 from both sides to undo the addition of 5, and then divided both sides by 2 to undo the multiplication by 2.

Inverse relationships between operations are used in two-step inequalities because they help to simplify the equation by undoing the operations one by one, leading to an isolated variable.

By using inverse relationships between operations, we can efficiently and systematically solve two-step inequalities and isolate the variable to find the solution set.

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Answer:

14,700 butterflies

Step-by-step explanation:

Given the following data;

Time, x = 7 years

f(x) = 2,000(1.05)x

To find the population;

A population can be defined as the total number of living organisms living together in a particular place and sharing certain characteristics in common.

Substituting into the equation, we have;

f(7) = 2,000(1.05) * 7

f(7) = 2,100 * 7

f(7) = 14,700 butterflies

After using the deductive reasoning the procedure always produces the number 8.

Procedure:

Let the number be x.

We have to add 5 to the number x.

So the expression is x + 5.

We have to multiply the sum by 3.

Now the expression is 3(x + 5).

Now we have to subtract 7.

Now the expression is 3(x + 5) - 7.

Then we have to decrease this difference by the triple of the original number.

The triple of original number is 3x.

Now the expression is {3(x + 5) - 7} - 3x.

Now solving this expression

= {3(x + 5) - 7} - 3x.

First simplify the bracket

= 3x + 15 - 7 - 3x.

= 8

Now we can se that the after following the whole procedure the answer is 8.

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Answer:

y=3x+10

Step-by-step explanation:

7-16=-9

-1-2=-3

-9/-3=3

m=3

The formula for this linear function is f(x) = mx + b, where m is the slope (in this example, -350), and b is indeed the y-intercept (750,000 in this case).

An equation expressing the connection between the expressions on either side of a sign. Normally, it has an equal sign and just one variable. such as: 2x - 4 is equal to 2. The variable x is present in the example above.

Workers who complete the computer security course will each receive a reimbursement of $350.

We deduct $350x from of the initial $750,000 to determine how much money will remain inside the education fund once x employee gets the reimbursement.

Thus, f(x) = 750,000 - 350x is the equation again for function that describes that amount of money still in the fund when x employees receive the refund.  

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Answer:

16 boxes

Step-by-step explanation:

16x5=80+150=230>15x16=240

An image of triangle NOG after a rotation 90° clockwise about the origin is shown below.

In Mathematics and Geometry, a rotation is a type of transformation which moves every point of the object through a number of degrees around a given point, which can either be clockwise or counterclockwise (anticlockwise) direction.

Next, we would apply a rotation of 90° clockwise about the origin to the coordinate of this triangle NOG in order to determine the coordinate of its image;

(x, y)                →            (y, -x)

Point N = (-4, -1)          →     Point N' (-1, 4)

Point O = (-4, -3)          →     Point O' (-3, 4)

Point G = (0, -1)          →     Point G' (-1, 0)

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Answer:

the value of x is 7.

Step-by-step explanation:

2+19=21

21÷3=7

Check:

3×7=21

21-2=19

Therefore, 7 is the answer.

Maddy's rule for obtaining the x-coordinate values and Ted's rule for

obtaining the y-coordinate values combine to form a linear graph.

Reasons:

The given rules used to graph the equations are;

Maddy's rule  for the x-coordinate values = x + 2, where, x ≥ 3

Ted's rule for the y-coordinate values = y + 4, where, y ≥ 0

Therefore, the following table of values can be generated;

\(\begin{tabular}{|c|c|}x&y\\3&0\\5&4\\7&8\\9&12\\11&16\end{array}\right]\)

The first difference of the y-values is constant and the difference in the x-

values is also a constant, therefore, the data represents a linear function

and the graph is also linear.

Using the above table of values obtained from Maddy's and Ted's rules, the

graph of the ordered pair can be plotted by entering the values in MS

Excel spread sheet and using the insert Scatter plot function.

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Answer:

102 minutes=1 hour and 42 minutes

6:45+1 hour and 42 minutes=8:27 p.m.

hence, the answer is 8:27 pm

hope this helped.

Answer:

Step-by-step explanation:

1. An expression is a mathematical statement that contains numbers and variables. A term is part of an expression that is added or subtracted. Terms that have the same variable or variables raised to the same exponent are like terms.

2. Here's a table to show whether the terms in each pair are like terms:

Terms                                     Like Terms?

3x^2 and 4x^2                              Yes

5xy and 7x^2y^2                               No

2y^3 and -2y^3                              Yes

6x and -6y                                       No

Answer:

16

5

O

I think

Step-by-step explanation:

Answer:

$12.68

Step-by-step explanation:

Multiply the price of one pound by the amount of pounds you're buying,

8.45 x 1.5

= 12.675

Round up

= 12.68

The rate of the slower car is 77km/hr

Velocity is the rate of change of displacement with time. It is measured in meter per second and it is a vector quantity.

velocity = displacement/time

displacement = velocity × time

represent the faster car by v1 and the slower car by v2

v1 = v2+16

V2 = v1-16

Total displacement = 680km

680 =( v1+V2)t

680 = (v1+V2)4

v1+v2 = 680/4

v2+16+v2 = 170

2v2 = 170-16

2v2 = 154

v2 = 154/2

v2 = 77km/hr

therefore the rate of the slower car is 77km/hr

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Answer:

52

Step-by-step explanation:

Variables that are directly related have a constant quotient.

\(\frac{y}{x}=\frac{28}{7}=4 \\ \\ \frac{y}{13}=4 \implies y=52\)

Answer:

Step-by-step explanation:

Based on astronomical science, the correct statements about the possibility of having other worlds like our planet Earth include:

A. Most of the other planets in our own solar system are not Earth-like.

C. A number of planets orbiting other stars have been detected.

D. Many stars seem to have planets.

F. Earth-like worlds are so small and distant that they have not yet been detected.

A solar system can be defined as a collection of the outer and inner planetary (astronomical) bodies alongside the Moon that are in orbit around the Sun, in slightly elliptical orbits.  

Basically, there are nine (9) planets in the solar system and these include;

Based on astronomical science, many stars have planets and a number of planets that orbit other stars have also been detected by astronomers.

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The system of equation can be solved using elimination method by "Multiply Equation B by 2 and add the results".

The correct answer option is option B

Equation A: x + 4y = 5

Equation B: 3x − 2y = 20

Multiply Equation B by 2 and add the results

6x - 4y = 40 equation C

x + 4y = 5 Equation A

6x + x = 40 + 5

7x = 45

divide both sides by 7

x = 45/7

x = 6.43

x + 4y = 5

6.43 + 4y = 5

4y = 5 - 6.43

4y = - 1.43

y = -1.43 / 4

y = - 0.3575

Therefore, multiplying Equation B by 2 and adding the results will help eliminate one of the variables.

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Answer:the slant height of the triangular pyramid is approximately 11.4132 centimeters.

To solve the inequality 2x < 12, we need to isolate x on one side of the inequality sign. We can do this by dividing both sides by 2:

2x < 12

x < 6

Therefore, the solution to the inequality is x < 6. This means that all values of x that are less than 6 satisfy the inequality. We can represent this graphically on a number line:

<=======()------6-------------->

The open circle () indicates that x cannot be equal to 6, but can be any value less than 6. The arrow indicates that the inequality is true for all values of x to the left of the open circle.

In summary, the solution to the inequality 2x < 12 is x < 6.

I'm 15 BTW

Answer:

6 pencils in each group

Step-by-step explanation:

Total = 88

Gave away = 46

Balance = 88 - 46 = 42

Divided into 7 groups, means : 42/7 = 6

So each group has 6 pencils

Answer:

The element 15 has two arrows pointing to both 7 and 9. This is a clear violation of the requirement to be a function. A function is well behaved, that is, each element in the domain must point to one element in the range. Therefore, this relation is not a function.

Step-by-step explanation:

Btw brainliest me plss

Answer:

Below

Step-by-step explanation:

Acceleration = change in velocity / change in time

                         = (7 - 70) m/s / 30 s = -63/30 m/s^2 = -  2.1 m/s^2

Answer:

-2.1m/s^

Step-by-step explanation:

acceleratiin=(change in velocity/time)

(7-70/30= -2.1m/s^2