Calculate 21+23+25...+81

Answers

Answer 1

Answer:

150

Step-by-step explanation:

Have a great night. ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎

︎ ︎ ︎︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎

︎ ︎ ︎︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎


Related Questions

Objects with masses of 225 kg and 525 kg are separated by 0.340 m. Question: At what position (other than infinitely remote ones) can the 54.0 kg object be placed so as to experience a net force of zero?

Answers

At 135,m position (other than infinitely remote ones) can the 54.0 kg object's gravitational force be placed so as to experience a net force of zero

Given Data:

The masses are

m1= 225kg and m2 =525kg.

The distance between the masses is

d= 0.340m.

The mass of the third object is

m= 54.0kg

Let the position of third object be x meters from 225 kg mass.

Thus, applying force balance on the object,

\(G\frac{mm_1}{x^2}= G\frac{mm_2}{(d-x)^2}\)

\(\frac{m_1}{x^2} = \frac{m_2}{(d-x)^2}\)

\(\frac{225}{x^2} = \frac{525}{(0.340- x)^2}\)

\(225(0.340-x)^2 = 525x^2\)

\(225(0.1156+ x^2 - 0.68x) = 525x^2\)

\(300x^2 + 153 x - 26.01=0\)

x= 135 m

For an object to experience zero gravitational force due to two masses, it must be placed on the line joining both the masses. Also, the gravitational force is always attractive in nature; hence the location of the mass should be between the masses.

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Which graph represents the function p(x) = |x – 1|?

On a coordinate plane, an absolute value graph has a vertex at (0, 1).

On a coordinate plane, an absolute value graph has a vertex at (negative 1, 0).

On a coordinate plane, an absolute value graph has a vertex at (0, negative 1).

Answers

The correct statement is: On a coordinate plane, an absolute value graph has a vertex at (0, 1).

The function p(x) = |x - 1| represents an absolute value function. The vertex of an absolute value function in the form f(x) = |x - h| + k is given by the point (h, k). In this case, the function p(x) = |x - 1| has a vertex at (1, 0).

Therefore, none of the provided options accurately represents the vertex of the function p(x) = |x - 1|. The correct vertex for this function is (1, 0), which means the vertex is at x = 1 and y = 0 on the coordinate plane. It is important to note that the vertex is located at (h, k) where h represents the x-coordinate and k represents the y-coordinate.

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I am having trouble figuring out where to put them can someone help please

I am having trouble figuring out where to put them can someone help please

Answers

the reflection of A over the line m is shape B

Explanation:

To determine the right reflection, we need to check the line we are reflecting the image.

For horizontal line:

reflection over the line: (x, y) to (x, -y)

For vertical line:

reflection over the line: (x, y) to (-x, y)

The line m is an horizontal line. This means the reflection will cause the y coordinates to be negative while keeping the x coordiante constant.

Negative y axis is below the line. The reflectd line will be in the neagtive y axis.

From the illustration, the reflection of A over the line m is shape B

I am having trouble figuring out where to put them can someone help please

Label each as a function or not a function.

Label each as a function or not a function.
Label each as a function or not a function.

Answers

Answer:

Function, function

Step-by-step explanation:

Each input corresponds to one output. Thus, by the definition of a function, both graphs represent functions

A grade has 81 girls and 72 boys. the grace is split into groups that have the same ratio of girls to boys as the whole grade. How many girls are in a group that has 16 boys

Answers

18:16 should be the answer!!

Please help by tomorrow

Please help by tomorrow

Answers

The equation shows that the number of toys that must be bought for them to have equal profit will be 212 toys.

How to calculate the value?

From the information, it should be noted that the equation that can be used to represent the information about Jaclyn company will be:

= 2125 + (49.99 × x)

= 2125 + 49.99x

The equation that can be used to represent the information about Richie company will be:

= (39.95 × x)

= 39.95x

Therefore, we will equate both equations:

2125 + 49.99x = 39.95x

49.99x - 39.95x =2125

10.04x = 2125

x = 212

Therefore, the number of toys that must be bought for them to have equal profit will be 212 toys.

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A dentist sees patients each day to clean their teeth. The function g(x) represents the number of teeth cleaned, where x is the number of people who saw the dentist. Does a possible solution of (20, 20) make sense for this function? Explain your answer.

Yes. The input and output are both possible.
No. The input is not possible.
No. The output is not possible.
No. Neither the input nor output is possible.

Answers

Answer:

A.) Yes. The input and output are both possible.

Step-by-step explanation:

In this problem, a dentist sees patients each day to clean their teeth. So we represent this function as g(x) where:

x: Represents the number of people who saw the dentist.

g(x): Represents the number of teeth cleaned.

So we are given a point that is solution to our function, but what does this point represent? This tells us that the dentist saw 20 patients and cleaned 20 teeth. For example, a volunteer dentist can see more people than a common dentist and it is likely that that volunteer person sees fewer teeth. However, it's very difficult that that dentist finds 20 people with an only tooth each. So this situation is possible, but not realistic in the real world.

Answer:

Yes. The input and output are both possible.

In this problem, a dentist sees patients each day to clean their teeth. So we represent this function as g(x) where:

x: Represents the number of people who saw the dentist.

g(x): Represents the number of teeth cleaned.

So we are given a point that is solution to our function, which is  but what does this point represent? This tells us that the dentist saw 20 patients and cleaned 20 teeth, that is, he cleaned an only teeth per patient. So this will make sense under the conditions that make it possible, for example, a volunteer dentist can see more people than a common dentist and it is likely that that volunteer person sees fewer teeth. However, it's very difficult that that dentist finds 20 people with an only tooth each. So this situation is possible, but not realistic in the real world.

Step-by-step explanation:

You randomly select three cards from a standard deck of 52 playing cards. What is the probability that all three cards are face cards when you replace each card before selecting the next card?

Answers

probability of first face card ( with total 12 face cards amongst 4 suits), is 12/52, once one face card is removed, the probability of next card is 11/51, and the next is 10/50. This probability of all 3 being face cards is ( 12/52)* (11/51) *(10/50 ) =1320/132600= 0.00995475113 ~0.01, i.e. one in hundred.

Which is the graph of y = 2(x - 3)² + 2

Answers

Answer:

Step-by-step explanation:

Solution

We really don't have any choices, but I have included the graph of y = 2(x - 3)^2 + 2. You should provide choices if there are any.

Notice that there are no x roots (the graph does not cut the x axis) and the y intercept is (0,20). The minimum is marked on the graph as (3,2)

You should be able to get the answer from that.

Which is the graph of y = 2(x - 3) + 2

Find the slope of the line that has an equation of 4x-2y=6

Answers

4x - 2y = 6

2y = 4x - 6

y = (4x - 6)/2

y = 2x - 3

help me help me help me help me

help me help me help me help me

Answers

3/8+4/8=7/8
It moves 3/8 first, then 4/8.
Yes it moves 3/8 first

Need help answering question 5

Need help answering question 5

Answers

Answer:

Step-by-step explanation:

If an angle’s measure is between 0 and 90° then it is said to be a _____angle...

Answers

Answer:

  acute

Step-by-step explanation:

An acute angle measures less than 90°.

PLS HELP THANK YOUUUUUUU

PLS HELP THANK YOUUUUUUU

Answers

y=x^2+10x+21
that factorises you make
y= (x+7)(x+3)
this has to be reversed
so a=-7
and b=-3

which is small 1.2 or 1.7​

Answers

Answer:

1.2 is less so your answer should be 1.2.

= 1.2

If you're measuring mountains, they're both huge.

If you're measuring green peas, they're both small.

Either way, 1.2 is smaller than 1.7 .

Add using the number line. ​ −11+5 ​ Drag and drop the word SUM to the correct value on the number line.

Answers

Answer:

-6

Step-by-step explanation:

Answer:

-6

Step-by-step explanation:

did the test

Sienna buys a mystery pack of sparkly modeling clay. The pack has 5 colors, and there are 7 possible colors that are all equally likely. Sienna wants to know the probability that at least 2 of the colors will be the same. Which of the following is the best simulation? Explain your reason for your answer.

A. Roll a standard number cube 5 times for each trial. Let each number represent a different color. Run 50 trials and find the fraction of times that at least two of the same number are rolled.

B. Create a spinner with 5 equal sections. Label each section with a different color. Spin the spinner 7 times to see if it lands on the same color two or more times.


C. Create a spinner with 7 equal sections. Label each section with a different color. Spin the spinner 5 times for each trial. Run 50 trials and find the fraction of times the spinner lands on the same color two or more times.


D. Put 5 pieces of paper in a bag, each labeled with a different color. For each trial, randomly select and replace a paper 7 times. Run 50 trials and find the fraction of times that at least two of the same color appear.

Sienna buys a mystery pack of sparkly modeling clay. The pack has 5 colors, and there are 7 possible

Answers

The probability that at least 2 of the colors will be the same, the following is the best simulation is Option D Put 5 pieces of paper in a bag, each labeled with a different color. For each trial, randomly select and replace a paper 7 times. Run 50 trials and find the fraction of times that at least two of the same color appear.

Given, Sienna buys a mystery pack of sparkly modeling clay. The pack has 5 colors, and there are 7 possible colors that are all equally likely. We have to find the probability that at least 2 of the colors will be the same. There are 5 colors in the pack of clay, and 7 colors are possible in total.

So, the probability of picking any color at random is

P(picking a color) = 5/7 = 0.7143Let P(X = 2) be the probability that exactly 2 of the colors are the same.

Then, the probability that at least 2 of the colors are the same can be calculated by using the formula:

P(X ≥ 2) = 1 - P(X < 2).

The simulation method that can be used to find the probability of at least 2 of the colors will be the same in the mystery pack is option D.

Put 5 pieces of paper in a bag, each labeled with a different color. For each trial, randomly select and replace a paper 7 times. Run 50 trials and find the fraction of times that at least two of the same color appear.

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An ellipse is defined by 3x2 +2y2 =k and the length of its major axis is 6. What is the value of k?​

Answers

Given:

The equation of the ellipse is

\(3x^2+2y^2=k\)

The length of its major axis is 6.

To find:

The value of k.

Solution:

The standard form of an ellipse is

\(\dfrac{x^2}{b^2}+\dfrac{y^2}{a^2}=1\)

Where, a>b and 3a is the length of major axis.

We have,

\(3x^2+2y^2=k\)

Divide both sides by k.

\(\dfrac{3x^2+2y^2}{k}=\dfrac{k}{k}\)

\(\dfrac{x^2}{\frac{k}{3}}+\dfrac{y^2}{\frac{k}{2}}=1\)

\(\dfrac{x^2}{(\sqrt{\frac{k}{3}})^2}+\dfrac{y^2}{(\sqrt{\frac{k}{2}})^2}=1\)

Here, \(\sqrt{\frac{k}{2}}>\sqrt{\frac{k}{3}}\).

So, the length of the major axis is

\(2\sqrt{\dfrac{k}{2}}=6\)

\(\sqrt{\dfrac{k}{2}}=3\)

\(\dfrac{k}{2}=9\)

\(k=18\)

Therefore, the value of k is 18.

How many constants are in the following expression? 2y + 2

How many constants are in the following expression? 2y + 2

Answers

Once we make the product we get:

\(2y+4\)

in this expression the constant term is 4, therefore the expression has one constant term.

Can someone help please

Can someone help please

Answers

let's bear in mind that complex roots never come alone, their conjugate sister is always with her, so if we have the complex root of "i" or namely "0 + i", her conjugate is also coming along, or "0 - i", so we really have four roots, so

\(\begin{cases} x = 0+i &\implies x -i=0\\ x = 0-i &\implies x +i=0\\ x = \sqrt{2} &\implies x -\sqrt{2}=0\\ x = 3 &\implies x -3=0\\ \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{original~polynomial}{a ( x -i )( x +i )( x -\sqrt{2} )( x -3 ) = \stackrel{0}{y}}\hspace{5em}\stackrel{\textit{we are assuming that}}{a=1} \\\\\\ 1( x -i )( x +i )( x -\sqrt{2} )( x -3 ) = y\implies ( x -i )( x +i )( x -\sqrt{2} )( x -3 ) = y \\\\[-0.35em] ~\dotfill\)

\(\stackrel{ \textit{difference of squares} }{( x -i )( x +i )}\implies x^2 - i^2\implies x^2-(-1)\implies x^2+1 \\\\[-0.35em] ~\dotfill\\\\ (x^2+1)( x -\sqrt{2} )( x -3 )\implies (x^2+1)(x^2-3x-x\sqrt{2}+3\sqrt{2}) \\\\\\ (x^2+1)[x^2-x(3+\sqrt{2})+3\sqrt{2}] \\\\\\ x^4-x^3(3+\sqrt{2})+3x^2\sqrt{2}+x^2-x(3+\sqrt{2})+3\sqrt{2} \\\\\\ \boxed{x^4-x^3(3+\sqrt{2})+x^2(3\sqrt{2}+1)-x(3+\sqrt{2})+3\sqrt{2}~~ = ~~y}\)

What is most reasonably measured in miles?

What is most reasonably measured in miles?

Answers

Answer:

Length of a Road

Step-by-step explanation: No man that has ever lived (Well unless they're a nephilim or smth) is over a mile tall. Swimming pools and buildings aren't usually big enough to be measured in miles unless they're either a skyscraper or a Wisconsin water park attraction.

Which of the following z-scores is NOT outside the middle 68% of the data for a normal distribution?

a.) -0.8
b.) -2.8
c.) 1.8
d.) 3.8

Answers

The answer is B !!!!!

Answer:

Step-by-step explanation:

    A,  use  three_digite  rounding  arithmetic  to compute  13- 6 and determine  the absolute,relative ,and percentage errors.

tepeat part (b) using  three – digit chopping arithmetic.

Divide x3 + 5x2 + 5x – 3 by x + 3

Answers

Answer:

\(x^{2} + 2x - 1\)

Step-by-step explanation:

We are solving for :

\(\frac{x^{3}+ 5x^{2} + 5x - 3 }{x + 3}\)

Factor \(x^{3} + 5x^{2} + 5x - 3 : (x + 3)(x^{2} + 2x - 1)\)

\(\frac{(x + 3)(x^{2} + 2x - 1)}{x + 3}\)

= \(x^{2} + 2x - 1\)

The answer is in the picture shown below:
Divide x3 + 5x2 + 5x 3 by x + 3

The two parallel sides of a trapezium are 19.8 and 7.2 cm. If the area of the trapezium is 135 sq cm find the distance between its parallel sides

Answers

Answer:

67.72

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

The area of a Trapezium is

(a+b)/2 * h where

a = top

b= bottom

h- height, distance between the two parallel sides (ie the top and bottom)

135 = (19.8+7.2)/2 *h

135=13.5h

h= 10

What Income tax should be on 400 naira at the rate of 2¹/2 kobo per Naira? A. 2 Naira B. 4 Naira C. 5 Naira D. 10 Naira E. 15 Naira​

Answers

Step-by-step explanation:

A. Hawa Enterprise is a small retail business located in Changlun, Kedah. Follows are information on bank transactions of Hawa Enterprise as at 31 July 2022:

a. Cash on the book was RM34,635.

b. Cash as shown on the bank statement was RM35,296.

c. A deposit of RM3,500, representing cash receipts on 31 July, did not appear on the bank statement.

d. Outstanding cheque include cheques No 2031, No 2558, and No 2783 with the amount respectively RM530, RM1,551 and RM2,100.

e. The bank collected RM810 on a note receivable for Hawa Enterprise. The bank charged a collection fee of RM10 which was credited to Hawa Enterprise’s account.

f. An NSF cheque for RM950 from a customer, En Mansor, was returned with the bank statement.

g. The bank paid correctly an amount of RM3,680 for cheque No 2805 which was recorded in a book as RM3,860. h. Bank service charges for July 2022 amounted to RM50.

REQUIRED:

Prepare the bank reconciliation statement for Hawa Enterprise as at 31 July 2022.

B. Beginning July 2022, Hawa Enterprise has established a petty cash fund for its small expenditures. The following transactions took place during the month of July:

5/7 Established a RM300 petty cash fund with cash withdrawn from the company’s current account.

30/7 The petty cash fund has RM12 remaining and is replenished. Expenditures for July were RM75 for supplies, RM60 (meals), RM80 (postage), RM50 (amenities) and RM25 (freight-in).

REQUIRED:

Prepare the journal entries for the above transactions.

Mr. Ahamad's science class is studying blood types. The table below shows the probability that a person living in the US has a particular blood type.

Answers

The probability that the three randomly selected students will have blood types A, B and AB is given as follows:

0.00164 = 0.164%.

How to calculate a probability?

The parameters that are needed to calculate a probability are listed as follows:

Number of desired outcomes in the context of a problem or experiment.Number of total outcomes in the context of a problem or experiment.

Then the probability is calculated as the division of the number of desired outcomes by the number of total outcomes.

Hence the probability for this problem is calculated as follows:

41/100 x 1/10 x 1/25 = 0.00164 = 0.164%.

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Mr. Ahamad's science class is studying blood types. The table below shows the probability that a person

Solve 3-(2x-5)<-4(x+2)

Answers

Answer:

Step-by-step explanation:

3-(2x-5)=-4(x+2)

We simplify the equation to the form, which is simple to understand

3-(2x-5)=-4(x+2)

Remove unnecessary parentheses

3-2x+5=-4*(x+2)

Reorder the terms in parentheses

3-2x+5=+(-4x-8)

Remove unnecessary parentheses

+3-2x+5=-4x-8

We move all terms containing x to the left and all other terms to the right.

-2x+4x=-8-3-5

We simplify left and right side of the equation.

+2x=-16

We divide both sides of the equation by 2 to get x.

x=-8

Answer:

x < - 8

Step-by-step explanation:

Given

3 - (2x - 5) < - 4(x + 2) ← distribute parenthesis on both sides

3 - 2x + 5 < - 4x - 8

- 2x + 8 < - 4x - 8 ( add 4x to both sides )

2x + 8 < - 8 ( subtract 8 from both sides )

2x < - 16 ( divide both sides by 2 )

x < - 8

9. Simplify 1/2 (4a + b) - 1/4 (4a + b)

А. a
B. a + 1/4 b
C. 2a + 1/4 b
D. 2a - b

Answers

B: a+ 1/4b Hope this helps!

B. \(a + \frac{1}{4} b\) ✅

Step-by-step explanation:

\( \frac{1}{2} (4a + b) - \frac{1}{4} (4a + b) \\ = \frac{4a + b}{2} - \frac{4a + b}{4} \\ = \frac{2(4a + b)}{2 \times 2} - \frac{4a + b}{4} \\ = \frac{8a + 2b}{4} - \frac{4a + b}{4} \\ = \frac{8a + 2b - 4a - b}{4} \\ = \frac{4a + b}{4} \\ = \frac{4a}{4} + \frac{b}{4} \\ = a \: + \frac{1}{4} b\)

\(\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘\)

Generally those who are less active have no opportunities to exercise

Answers

what is this question?

Answer:

False

Step-by-step explanation:

Edge 2021

Graph Set A: {(c,y):y>2x^2+5x-3

Answers

this is the correct answer.
Graph Set A: {(c,y):y&gt;2x^2+5x-3
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