please help if u can!

Please Help If U Can!

Answers

Answer 1

9514 1404 393

Answer:

  C

Step-by-step explanation:

When you cross multiply by denominator expressions that share a zero, you are effectively making that zero a solution of the resulting equation. That zero cannot be part of the domain of the original equation, and so must be an extraneous solution.

This condition is seen in choice C.

  [tex]\dfrac{8}{x^2-9}=\dfrac{5}{2x-6}\qquad\text{original equation. $x\ne3$}\\\\8(2x-6)=5(x^2-9)\qquad\text{result of cross multiplying}\\\\16(x -3)=5(x+3)(x-3)\qquad\text{factored form}[/tex]

The solutions to this equation are x=1/5 and x=3. Of these, x=3 is extraneous.

__

A better solution method is multiplying by the least common denominator:

  [tex]2(8)=5(x+3)\qquad\text{result of multiplying by $2(x^2-9)$}[/tex]


Related Questions

Hi, I need help with this story problem.


Zach has the following partial bags of sugar in his pantry; 2 c., 1.5 c., 0.5 c., 3 c., and 1.5 c. If he uses 1 c. of sugar for his baking, how many cups of sugar will he have left?​

Answers

Answer: 7.5 cups of sugar.

Step-by-step explanation:

Add all of the above:

2+1.5+0.5+3+1.5= 8.5 cups of sugar

Since Zach only needs 1 cup of sugar, subtract 1 from 8.5.

Therefore, your answer is 7.5 cups of sugar.

PLS HELP VERY EASY ILL GIVE U BRAINLIEST

Answers

[tex](\dfrac{1}{3})^4=\dfrac{1^4}{3^4}=\dfrac{1\cdot1\cdot1\cdot1}{3\cdot3\cdot3\cdot3}=\boxed{\frac{1}{81}}[/tex]

-8x+44>60 and -4x+50<58

Answers

-8x + 44 > 60

-8x > 60 - 44

-8x > 16 / : (-8)

x < -2

-4x + 50 < 58

-4x < 58 - 50

-4x < 8 / : (-4)

x > -2

How to solve 0.6 divided by 30

Answers

.06 / 30 is 0.02 I used photo math it shows step by step

solve for D
1st to answer gets mark brainiest

Answers

Answer:

d= 4

Step-by-step explanation:

41 = 12d - 7

41 + 7 = 12d

48 = 12d

48 ÷ 12 = 12d ÷ 12

4 = d

Answer:

d = 4

Step-by-step explanation:

hope this helps

Tìm x, y, z biết x(x+y+z )=-5; y(x+y+z )=9;7(x+y+z )=5

Answers

Answer:

Step-by-step explanation:

Có: 7(x+y+z)=5

=>x+y+z = 5/7 (1)

Lại có:

+) y(x+y+z)=9

=>y×5/7=9

y=9: 5/7

y=63/5 (2)

+) x(x+y+z)=-5

=>x×5/7=-5

x=-5:5/7

x=-7 (3)

Từ (1);(2) và (3) => -7+63/5+z =5/7

=>28/5+z=5/7

=>z=-171/35

Vậy ....

Fill in the missing terms in each of the following arithmetic sequences:
(a) 3,__,19,__35, ...
(b) 5,__, __,17,...

Answers

Answer:

(a) 3,11,19,27,35

(b) 5,9,13,17

Step-by-step explanation:

For (a), the rule is +8 for every term and for (b) the rule is +4 for every term.

I’m not very good at math and I need help

Answers

The answer would be 6.00%

Answer:

C

Step-by-step explanation:

First of all it's not that you aren't very good at math it's just that you don't YET understand the concepts,... Believe me when I say that I've been there!!!

To solve this problem you have to look at it as a solve for the unknown problem,... They say that The FORMULA (important) is the following:

S = Ar

This can be written:

S = A * r

They then say that

S = sales tax,

A = cost of the product

r = local sales-tax rate,...

THEN they start giving you information,... they say the COST of a television (cost of the product) is $400 dollars you can now enter this info in you formula,... A = cost of product,... so switch the letter with the assigned info,...

S = $400 * r

...and the sales tax is $24 dollars,... S stands for sales tax so switch the variable for the dollar amount,...

$24 = $400 * r

Now you just have to solve the equation (figure out $400 * what = $24) and easy way to do this is to simply divide $24 by $400,...

$24/$400=0.06,...

0.06 = 6.0% = 6.00%

Hope I helped, You can learn anything!,... Me out,... Chow,...!

5 / 4 x + 3 = x - 1 / 4

Answers

5/4x+3 = x-1/4
5/4x-x = -1/4-3
1/4x = -13/4
x = -13/4.4
x = - 13

solve the formula for y (pls give steps)
-10x +2y = 4

Answers

-10x + 2y = 4

add 10x to both sides (we do that because it cancels the negative 10x out)

2y = 4 + 10x

divide everything by two (because we need to get y alone on one side)

y = 2 + 5x

flip the 5x and 2 (because that is the form of y intercept form)

y = 5x + 2

An artist is making a scale model of a statue. On the model 2 inches represents 1 foot on the actual statue. Which graph best represents this relationship?

Answers

Answer:

Step-by-step explanation:

Just so you can see it easier, 4 inches = 2 feet.

That means you should pick graph C

What my first statement means is that you have to pick some point on the graph that translates to (say) 4 inches to 2 feet. Since that point is clear on graph C, that's what you choose.

A doesn't make that same ratio. It goes 1 to 1. That is 4 inches = 4 feet. That's not the correct ratio

B is 10 inches to 2 feet. That is no where's near the right answer. Just plot the points I'm choosing to see if the ratio holds.

D is 4 inches to 21 feet. Obviously not 2 to 1.

Answer:

C

Step-by-step explanation:

As the model size increases by 2, the statue size increases by 1

:)

Is 122/48 in its simplest form or is it’s simplest form 61/24?

Answers

The simplest form is 61/24 as your able to divide both the numerator and denominator of 122/48 by 2 to simplify it

Answer:

61/24 is its simplest form! :)

Step-by-step explanation:

Which expression fits the description

Answers

Can't see full image

Answer:

28:12

Step-by-step explanation:

When we take 7 and 3 and multiply them both by 4 we get 28 and 12.

hope this helps!

Solve the problem, who ever will solve this will be marked as brainliest ​

Answers

Answer:

mark me as brainliest ❤️

Answer:

gain%=8%

hope it helps.stay safe healthy and happy...

Please help these are my last questions! :)

Answers

Answer:

0.78 0.280.71

Step-by-step explanation:

I hope this is helpful.

If a^2 b=c and b 0, then 1/b

Answers

Answer:

i guess it's and is zero (0

-.55 as a fraction in simplest form

Answers

Answer:

-11/20

Step-by-step explanation:

Find the measure of unknown angle​

Answers

Answer:

Step-by-step explanation:

z = 102 degree (opposite angles of a parallelogram are equal)

z + x + 34 = 180 degree 9sum of adjacent angles of a parallelogram is 180 degree)

102 + x + 34 = 180

x = 180 - 136

x = 44 degree

y + 102 + x = 180 degree (sum of interior angles of a triangle is 180 degree)

y + 102 + 44 = 180

y = 180 - 146

y = 34 degree

Answer:

x = 44°, y = 34°, z = 102°

Step-by-step explanation:

The opposite angles of a parallelogram are congruent , then

∠ z = 102°

Consecutive angles are supplementary , then

x + 34° + 102° = 180°

x + 136° = 180° ( subtract 136° from both sides )

x = 44°

∠ y = 34° ( alternate angle

write -8 9/10 as a decimal number

Answers

Answer:

-8.9

Step-by-step explanation:

Answer:

8.9

Step-by-step explanation:

8 9/10 in decimal

= 8.9

[tex]\sqrt75x 7y 3 .[/tex]

Answers

Answer:

[tex]15 \sqrt{7xy} [/tex]

Step-by-step explanation:

[tex] \sqrt{75x7y3} [/tex]

[tex]75x \times 7y \times 3[/tex]

[tex]525xy \times 3[/tex]

[tex] \sqrt{1575xy} [/tex]

[tex] \sqrt{ {15}^{2} \times 7xy} [/tex]

[tex] \sqrt{ {15}^{2} } \sqrt{7xy} [/tex]

[tex] = 15 \sqrt{7xy} [/tex]


HELP ME PLEASE WHATS RBE X AND Y INTERCEPT

Answers

x axis (-40,0)
y axis (0,15)

pls help me ASAP!!will mark as brainlist
a)3/16×360degree
b)1/4×360degree
c)1/2×360degree
d)1/8×360degree
e)7/24×360degree
f)1/16×360degree

Answers

Answer:

a.1.17809725 rad

b.1.57079633 rad

c.3.14159265 rad

d.0.785398163 rad

e.1.83259571 rad

f.100.530965 rad

Answer:

a. 1.17809725 rad

hope its help

#CarryOnLearning

4. Is it appropriate to use an absolute value inequality to represent how a player wins
this game? Why? (2 points: 1 point for an answer, 1 point for an explanation)

Answers

Using it's concept for the difference between points, the absolute value inequality |x - y| < 10 represents when Erik wins the game, and the inequality |x - y| ≥ 10 represents when Nina wins the game.

What is the missing information?

Erik and Nita are playing a game with numbers. In the game, they each think of a random number from zero to 20. If the difference between their two numbers is less than 10, then Erik wins. If the difference between their two numbers to greater than 10, then Nita wins. Use what you know about inequalities and absolute values to better understand the game.

What is the absolute value function?

The absolute function is defined by:

|x| = x, x ≥ 0.|x| = -x, x < 0.

It measures the distance of a point x to the origin, hence, for example, |-2| = |2| = 0.

For this problem, we have that:

Erik's number is x.Nina's number is y.

The difference between these two numbers is:

|x - y|.


Erik wins if the difference is less than 10, hence:

|x - y| < 10.

Hence:

Using it's concept for the difference between points, the absolute value inequality |x - y| < 10 represents when Erik wins the game, and the inequality |x - y| ≥ 10 represents when Nina wins the game.

More can be learned about the absolute value equation at https://brainly.com/question/5012769

#SPJ1

Mrs. Chen bought 3 boxes of chocolate from a shop. She paid RM50 and received RM8 change. How much is the cost of a box of chocolates?​

Answers

Answer:

RM 14

Step-by-step explanation:

[tex]50 - 8 = rm42 \: for \: 3 \: boxes \\ \frac{42}{3} = rm14 \: for \: each \: box[/tex]

PLS I NEED HELP IM STUCKKKKK

Answers

Answer:

D

Step-by-step explanation:

We can cross off a because it is impossible to have negative of a material.

Now lets get into the System of equations. First subtract both of them to have one common variable(we will find the second one later)

- P + N = 134

- P + 3.1N = 241.10

2.1N = 107.1

107.1/2.1 = 51

Now we know that n = 51

lets substitute,

P + 51 = 134

P = 83

Lets check

83  + 51 = 134

Great! The asnwer is D

Answer:

D.

. . . . .. . . . . . .. . .. . . . . . . . ..

Can you factor x² + 9?

Answers

Answer:

x square + 3 Square

(x + 3)square

X Square + 3 Square + 2x3

Name the angle adjacent to

Answers

Answer:

∠DBC

Step-by-step explanation:

Since ∠ABD shares the same vertex and side with ∠DBC, then they are adjacent angles.

In addition to question #7:

Angel AFB is adjacent to Angel BFC

PLease hellp meeeeeeeee

Answers

Answer:

I think it -2 then -7

how do i do



3x – 5 = 1

Answers

Answer:

x=2

Step-by-step explanation:

3x – 5 = 1

3x-5=1

Add 5 to each side

3x-5+5 = 1+5

3x = 6

Divide by 3

3x/3 = 6/3

x = 2

PLEASE HELP ASAP WILL GIVE BRAINLIEST AND POINTS Is the set of points in the image a function yes or no?

Answers

Answer:

Yes, the set of points is a function.

Step-by-step explanation:

A function only passes through any given y value once. None of the y values (the second number in the form (x, y)) are the same, so the set of points is indeed a function.

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