Please help me answer this Maths question.☺

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Please Help Me Answer This Maths Question.***Must Show Step By Step Guide To How You Got Your Answers***

Answers

Answer 1
(i) y = k/(k + w); k = 1/2; w = 1/3

y = (1/2)/(1/2 + 1/3)

y = (1/2)/(3/6 + 2/6)

y = (1/2)/5/6)

y = 1/2 * 6/5

y = 6/10

y = 3/5

(ii) x/(x - 1) - 1 =

= x/(x - 1) - (x - 1)/(x - 1)

= [x - (x - 1)]/(x - 1)

= (x - x + 1)/(x - 1)

= 1/(x - 1)

(iii) 4^(2x + 1) = sqrt(8)

4 = 2^2, and 8 = 2^3

(2^2)^(2x + 1) = sqrt(2^3)

2^(4x + 2) = (2^(3))^(1/2)

2^(4x + 2) = 2^(3/2)

4x + 2 = 3/2

4x = 3/2 - 2

4x = -1/2

x = -1/8

(iv) x - 3 = sqrt(3x - 11)

Square both sides.

(x - 3)^2 = ( sqrt(3x - 11) )^2

x^2 - 6x + 9 = 3x - 11

x^2 - 9x + 20 = 0

(x - 4)(x - 5) = 0

x = 4 or x = 5

Check:

For x = 4

x - 3 = sqrt(3x - 11)

4 - 3 = sqrt(3 * 4 - 11)

1 = sqrt(12 - 11)

1 = sqrt(1)

1 = 1

1 = 1 is a true statement, so x = 4 is a valid solution.

For x = 5

x - 3 = sqrt(3x - 11)

5 - 3 = sqrt(3 * 5 - 11)

2 = sqrt(15 - 11)

2 = sqrt(4)

2 = 2

2 = 2 is a true statement, so x = 5 is a valid solution.


Related Questions

Last month, a coral reef 7000 grew millimeters taller. How much did it grow in meters?

Answers

The coral reef would have grown 7 meters.
The prefix "milli" before any standard unit such as meters, grams, or seconds. Just means it takes 1000 "milli"units to make 1 standard unit. For example, 1 meter=1000millimeters.

Knowing this, let's cross multiply:
[tex] \frac{7000 millimeters}{1 month} * \frac{1 meter}{1000millimeters} = 7 meters [/tex]
(units that are the same and diagonal from each other cancel out)
So, the answer is: Last month, a coral reef grew 7 meters.

Can someone please help me?

Answers

13) is 6, 12, 18, 24, 30

14) is 9, 18, 27, 36, 45

I'm sorry but I don't get 10 and 11

Bethany has 43 apples.write a subtraction story about the apples that would require regrouping.

Answers

Hey there!

21 apples were rotten and got thrown out. The remaining apples were divided equally among 11 people
Bethany has 43 apples and decides to take 25 for her apple pies and gives the rest to her friends

I need help with this math problem please!

Answers

D, because (5+y) and 8 are factors, and within (5+y), 5 and y are terms.

Write the number 418,712,909 in word form

Answers

four-hundred and eighteen million, seven hundred and twelve thousand and nine hundred and nine 
Final answer:

The number 418,712,909 is written in word form as 'four hundred eighteen million, seven hundred twelve thousand, nine hundred nine'. This educates students on place value and the decimal system, crucial elements in middle school mathematics.

Explanation:

The number 418,712,909 in word form is written as four hundred eighteen million, seven hundred twelve thousand, nine hundred nine. Learning to convert numbers into words is an essential skill in mathematics, teaching students not only the names of large numbers but also helping to develop a deeper understanding of place value and the decimal system.

It's a fundamental part of mathematics education, especially in middle school, where students start engaging with more complex numerical concepts.

Write two algebraic expressions, one with a quotient of x5 and one with a product of x5

Answers

25+5/5x=30/5x. product:5x+35=3x+17

An algebraic expression with a quotient of [tex]x^{5}[/tex] is [tex]\frac{x^{7} }{x^{2} }[/tex] and An algebraic expression with a product of [tex]x^{5}[/tex] is [tex]x^{3}\times x^{2}[/tex].

We need to write two algebraic expressions, one with a quotient of [tex]x^{5}[/tex] and one with a product of [tex]x^{5}[/tex].

What is an algebraic expression?

An algebraic expression (or) a variable expression is a combination of terms by the operations such as addition, subtraction, multiplication, division, etc.

Now, an algebraic expression with a quotient of [tex]x^{5}[/tex] is

[tex]\frac{x^{7} }{x^{2} } =x^{7-2}=x^{5}[/tex]  (∵[tex]\frac{a^{m} }{a^{n} } =a^{m-n}[/tex])

An algebraic expression with a product of [tex]x^{5}[/tex] is

[tex]x^{3}\times x^{2} = x^{3+2}=x^{5}[/tex]

Therefore, an algebraic expression with a quotient of [tex]x^{5}[/tex] is [tex]\frac{x^{7} }{x^{2} }[/tex] and An algebraic expression with a product of [tex]x^{5}[/tex] is [tex]x^{3}\times x^{2}[/tex].

To learn more about an algebraic expression visit:

https://brainly.com/question/19245500.

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If angle PDQ equals 23 degrees and angle SDQ equals 11 degrees what is angle PDS?

Answers

It would be 31 hope this helps

I need helpppppppppp

Answers

The answer to number 1 is x=-2.
The answer to number 1 is x=3.
The answer to number 1 is x=21.
The answer to number 1 is x=-16.

7y-23 plus 23x-16 plus 8x-21 show steps  find x and Y 

Answers

7y-23+23x-16+8x-21
7y-23+31x-16-21
7y-23+31x-(-5)
7y−60+31x

Maria made a scale drawing of an elephant. The scale is 1 inch to 13 feet. What is the scrutiny length of the elephant? In the pic the elephant is 1.5 inches long.

Answers

Scale: 1 inch = 13 feet. 1.5 inches on the drawing. Actual length: 1.5 * 13 = 19.5 feet. Elephant length.

To find the actual length of the elephant, you need to use the scale provided by Maria's drawing. The scale states that 1 inch on the drawing represents 13 feet in reality. Since the elephant in the drawing is 1.5 inches long, we can calculate the actual length using the scale.

1. First, determine how many feet one inch on the drawing represents:

[tex]\( 1 \text{ inch on drawing} = 13 \text{ feet in reality} \)[/tex]

2. Multiply the number of inches in the drawing by the conversion factor to find the actual length:

 [tex]\( 1.5 \text{ inches on drawing} \times 13 \text{ feet/inch} = 19.5 \text{ feet in reality} \)[/tex]

So, the actual length of the elephant is 19.5 feet.

Which graph represents the function f(x) = -|x+3|?

Answers

the last one is correct

Answer:

Step-by-step explanation:

its the first one.

maggie has only dimes and quarters in her purse. she has 27 coins with a total value of 4.05. how many dimes does maggie have in her purse

Answers

d + q = 27.....q = 27 - d
0.10d + 0.25q = 4.05

0.10d + 0.25(27 - d) = 4.05
0.10d + 6.75 - 0.25d = 4.05
0.10d - 0.25d = 4.05 - 6.75
-0.15d = - 2.70
d = -2.70/ - 0.15
d = 18 <=== Maggie has 18 dimes 
and (27 - 18) = 9 quarters

By solving a system of equations, we will see that Maggie has 18 dimes and 9 quarters.

How to write the system of equations?

First, we define the variables that we will use:

D = number of dimes.Q = number of quarters.

There are a total of 27 coins, so:

Q + D = 27.

The total value is 4.05, so:

Q*0.25 + D*0.10 = 4.05

Then our system of equations:

Q + D = 27

Q*0.25 + D*0.10 = 4.05

To solve this we need to isolate one of the variables in one of the equations, I will isolate Q in the first one.

Q = 27 - D

Now we can replace this on the other equation and solve it for D:

(27 - D)*0.25 + D*0.10 = 4.05

6.75 - D*0.25 + D*0.10 = 4.05

6.75 - D*0.15 = 4.05

6.75 - 4.05 = D*0.15

2.70 = D*0.15

2.70/0.15 = D = 18

So she has 18 dimes, and then the other 9 conis must be quarters.

If you want to learn more about systems of equations, you can read:

https://brainly.com/question/13729904

Somebody Please Help, I'm Super Confused

Part A: If (7^2)^x = 1, what is the value of x? Explain your answer.

Part B: If (7^0)^x = 1, what are the possible values of x? Explain your answer.

Answers

So for A, I think it's 1 / 49, but B Is pretty tricky, I don't think I can help you with that one my dude, but I will try,and if it's wrong I am sorry.

5,687.3 mi to the nearest mile

Answers

5687.3 to the nearest mile is 5,687 miles

Because the number directly to the right of ur 7 is a 3....and since it is below 5, ur whole number stays the same....if that number would have been a 5 or above, u would have rounded ur whole number up 1 making it 5688.


25 POINTS HELP NOW

Twenty is 10% of what number?

Enter your answer in the box

Answers

divide 20 by 10%

10% = 0.10

20 / 0.10 = 200

 20 is 10% of 200

Which of the following has a value between 10/3 and 11/3

Answers

10/5 has a value between 10/3 and 11/3

Drawing a number line would help for this problem

Hope this helps!
You would divide each to find out what’s in between

PLEASE HELP 25 POINTSSS

Answers

use photomath it'll solve it for you easily and it's always correct work for any kind of math

Which algebraic expression is equivalent to the expression below?

Answers

The answer would be D.

What is 8/11 as a decimal

Answers

8/11 in decimal form should be about 0.73
that would be .727273

I hope this helps :3

Helen has a $1.35 in her bank in nickels and dimes the number of nickels is 9 more than the number of Dimes how many of each coin does she have

Answers

Helen has 15 nickels and 6 dimes. I hope this helps, good luck! 
Say number of dimes is x,
Therefore number of nickles is x+9


10x+5(x+9) = 135
10x+5x+45 =  135
15x+45 = 135  
15x=90
x=6


Number of dimes is 6 and number of nickles is x+9 = 15

How to write a real world problem involving the subtraction of two mixed numbers whose difference is less than 2 1/2

Answers

You can do 2 1/2 minus 1 1/8 to get 1 3/8. Your welcome and I hope you get a good grade

Professor Bartlett teaches a class of 12 students. She has a visually challenged​ student, Louise, who must sit in the front row next to her​ tutor, who is also a member of the class. Assume that the front row has seven ​chairs, and the tutor must be seated to the right of Louise. How many different ways can Professor Bartlett assign students to sit in the first​ row

Answers

Final answer:

Professor Bartlett can arrange the students in 1,440 different ways in the first row, considering Louise must sit next to her tutor on the right.

Explanation:

Professor Bartlett teaches a class of 12 students and needs to seat them in the front row which consists of 7 chairs. Specifically, Louise, who is visually challenged, must sit next to her tutor on the right side. To determine the number of different ways the students can be seated in the first row, we first consider the places of Louise and her tutor. Since Louise's tutor must be seated to her right, they can be viewed as a single entity with two internal arrangements: Louise on the left and the tutor on the right. Therefore, there are now effectively 6 entities to arrange (Louise and her tutor considered as one, plus the 5 other students) in 6 chairs in the front row.

The number of ways to arrange 6 entities in 6 spots is calculated by 6 factorial (6!), which equals 720. However, since Louise and her tutor can switch places within their designated spot, we must multiply this number by the 2 internal arrangements possible, resulting in 720 * 2 = 1,440 different seating arrangements for the first row.

Amanda has a car loan for 12,000 She is paying 3% interest for 6 years. How much will she pay in interest for the 6 years

Answers

she should get
[tex]12000 \times 3\% \times 6[/tex]
... I hope it's right ?:)

Thank you, will give brainliest.

Answers

(7,6) is the answer of your question
Please mark as brainiest 

30 students 2/5 play an instrument and 5/6 play a sport. How many students play an instrument and how many play sport..?

Answers

7/30 because 2/5+5/6 is like 12/30+ 25/30 which is 37/30 and simplified it’s 1 7/30 and that one means it’s already a whole and that means 7/30 do both

Final answer:

There are 30 students in total, 12 of whom play an instrument, and 25 of whom play a sport.

Explanation:

The question asks about the number of students who play an instrument and the number who play a sport. There are 30 students in total.

To find the number of students who play an instrument, we multiply 30 by ⅓ (2/5), since 2/5 of the students play an instrument. To find the number of students who play a sport, we multiply 30 by ⅕ (5/6), since 5/6 of the students play a sport.

For the instrument calculation: 30 × 2/5 = 12, so 12 students play an instrument.

For the sport calculation: 30 × 5/6 = 25, so 25 students play a sport.

PLEASE HELP!
The gravitational force that Earth exerts on an object is inversely proportional to the square of the distance between the center of the Earth and the object. When Bill is on the surface of Earth, 4,000 miles from the center, the gravitational force is 600 Newtons. What is the gravitational force (in Newtons) that the Earth exerts on him when he's standing on the moon, 240,000 miles from the center of the earth? Express your answer as a fraction

Answers

Inverse: Flipping the fraction of a number. For example the inverse of 2 would be 1/2. So force/1 has to = x/radius^2

Find "x":
 [tex] F_{gravity} = \frac{x}{r^2} [/tex]
Plug in numbers given:
 [tex] F_{gravity} = \frac{x}{r^2} [/tex]
[tex]600= \frac{x}{(4,000)^2} [/tex]
[tex]600= \frac{x}{16,000,000} [/tex]
[tex]x=9,600,000,000[/tex]

Find Force using x and the new radius:
 [tex] F_{gravity} = \frac{x}{r^2} [/tex]
 [tex] F_{gravity} = \frac{9,600,000,000}{(240,000)^2} [/tex] = 1/6

 



1/6  is the gravitational force (in Newtons) that the Earth exerts on him when he's standing on the moon.

What is gravitational force?

The gravitational force is a force that attracts any two gadgets with mass. We name the gravitational force attractive as it always tries to pull masses together, it in no way pushes them apart. In fact, every item, consisting of you, is pulling on every different item in the entire universe.

Learn more about gravitational force here: https://brainly.com/question/13010127

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Which equation correctly applies the distributive property?

A.(0.5⋅0.5)+(0.5⋅0.3)+(0.5⋅0.2)=0.5⋅(0.5+0.3+0.2) ​

B.−2.5⋅(4⋅1.045)=(−2.5⋅4)⋅1.045

C.−1.2⋅0.57⋅0.5=−1.2⋅0.5⋅0.57 ​

D.50+1.015=(50⋅1)+(50⋅0.01)+(50⋅0.005) ​

Answers

The answer should be A

Answer: Option 'A' is correct.

Step-by-step explanation:

Since we have given that

Distributive property which is expressed as

[tex]a\times (b+c)\\\\=a\times b+a\times c[/tex]

Similarly, in option 'A', we have

(0.5⋅0.5)+(0.5⋅0.3)+(0.5⋅0.2)=0.5⋅(0.5+0.3+0.2) ​

Here, a = 0.5,

b= 0.5

c = 0.3

d = 0.2

So, it can be expressed as

[tex]a\times (b+c+d)=a\times b+a\times c+a\times d[/tex]

Hence, Option 'A' is correct.

40/6 what is the closest whole number?

Answers

ANSWER: 7

EXPLANATION/EQUATION:

40 ÷ 6 = 6.666...
≈ 7

After you divide, you are left with 6.666... When rounding to the nearest whole number, the number needs to be rounded based on the tenth; in this case, the tenth is represented by a 6. 6 is closer to 10 than 1, so you round up. Therefore, the answer is 7.
7, because 40/6 is 6.6666... and you have to round up 6, so your answer is 7.

The quotient of a number m and 3.2 is 15

Answers

M/3.2*3.2=15*3.2
M=48
I think
I think is 42 t I hope

square root of 5 rounded to the nearest tenth

Answers

the square root of 5 is 2
That is the square root of five. Rounded to the nearest tenth, it would be 2.2. Hope this helped!
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