what is the solution to the equation -3d/d^2-2d-8+3/d-4 = -2/d+2
A. d = -4 and d = 2
B. d = -2 and d = 4
C. d = 1
D. d = 2

This is a system of three equations with two unknowns, x and y. To solve it, we can use the method of elimination. First, we can eliminate y by subtracting the first equation from the second equation:

x^2-2y=3 - (x-2y=3) => x^2-x=0

Then we can factor the resulting equation and find the values of x:

x^2-x=0 => x(x-1)=0 => x=0 or x=1

Next, we can substitute these values of x into any of the original equations and find the corresponding values of y. For example, using the first equation:

x-2y=3 => 0-2y=3 => y=-3/2 when x=0 x-2y=3 => 1-2y=3 => y=-1 when x=1

Finally, we can substitute these values of x and y into the expression x2y-2xy2 and evaluate it:

x2y-2xy2 => 02(-3/2)-2(0)(-3/2)2 => 0 when x=0 and y=-3/2 x2y-2xy2 => 12(-1)-2(1)(-1)2 => -3 when x=1 and y=-1

Therefore, the value of x2y-2xy2 can be either 0 or -3 depending on the values of x and y.

Answer:

Check Description for answer

Step-by-step explanation

do it urself

Answer:

A) solution 2 is more acidic than solution 1

Step-by-step explanation:

A chemist prepares two acid solutions:

Solution 1: 3 parts sulfuric acid to 7 parts water

Ratio of sulphur to water: 3/7 (3:7)

Solution 2: 4 parts sulfuric acid to 9 parts water

Ratio of sulphur to water: 4/9 (4:9)

___________________________________________________

Part A: (using ratios to determine which solution is more acidic)

First we make same denominator, since the denominators are 9 and 7, we have to find the lcm (lowest common multiple) they both have with is 63. To do that, we must multiply the denominators with either 7 or 9.

Solution 1: Numerator (3) multiplied by 9 and then denominator (7) multiplied by 9. This makes out fraction/ratio 27/63

Solution 2: Numerator (4) multiplied by 7 and then denominator (9) multiplied by 7. This makes out fraction/ratio 28/63

Since 28/63 (or just 28) is a larger quantity than 27/63 (or just 27) this means solution 2 is more acidic than solution 1.

Mathematical Line (Not sure what you would call this lol): 28 > 27

Part B: (Let 'y' amount of sulfuric acid mix with 'x' amount of water)

Equation of solution 1: y = 3/7x

Equation of solution 2: y = 4/9x

Please find attachment for graph.

Part C: Don't have a graph, sorry! (part a. method is more preferred to find more acidic because it gives the actual acidic amount.)

Answer:

b

Step-by-step explanation:

how it works with life

Answer:

its only people in mountainous areas

Step-by-step explanation:

Answer: Not what's written down.

Step-by-step explanation:

Okay, so basically, if you have a letter, no other number can go with that number with a letter. So like 5x + 2b -7.

There is only one number that has x, so 5x.

Same with b. 5x + 2b.

Now, there is no letter with the 7, so that will stay the same.

So, the answer is 5x + 2b -7.

Now, I look at your question.

If I do all of the work I just showed, the answer is C.

Your Answer is 13.076

have a good day

Answer:

x < 18

Step-by-step explanation:

First you do 18 divided by 18, which is 2, so then you write the final answer:

x < 18 (or x is less than 18)

Answer:

Step-by-step explanation:

997+997+997+997+997+997+997+997=?

or

997

x 8=???

first 7 x 8=56

997

x   8=??6

9 x 8=? than + 5(the five is from the 56 since the 7 is in the ones place the 5 goes to the tens)

9 x 8=72+5=77

997

x   8=?76

9 x 8 = ? than add 7 this time

72+7=79

997

x   8=7,976

since there is no number in the thousands the 70 79 just goes into the thousands but as itself

Answer:

All of the points on the graph could represent rational numbers.

Step-by-step explanation:

Answer:

All of the points on the graph could represent rational numbers

Step-by-step explanation:

i did the test and got iit right

To find the difference make sure that denominators are the same

Multiply -2/3 by 5 which is -10/5

Two negatives make a positive so , the equation is 8/15 + 10/15

8/15 + 10/15 = 18/15

Answer:

(10t + u)(10u + t) = 4,930

100tu + 10t^2 + 10u^2 + tu = 4,930

101tu + 10t^2 + 10u^2 = 4,930

10t^2 + (101u)t + (10u^2 - 4,930) = 0

(101u)^2 - 4(10)(10u^2 - 4,930)

= 10,201u^2 - 400u^2 + 197,200

= 9,801u^2 + 197,200

We see that u = 5 gives 442,225.

√442,225 = 665

(10t + 5)(50 + t) = 4,930

500t + 10t^2 + 250 + 5t = 4,930

10t^2 + 505t - 4,680 = 0

2t^2 + 101t - 936 = 0

t = (-101 + √(101^2 - 4(2)(-936)))/(2×2)

= (-101 + √17,689)/4

= (-101 + 133)/4 = 32/4 = 8

So the numbers are 58 and 85.

58 + 85 = 143

Answer:

the answer to the question is letter E I believe

Answer: The maximum amount of Kool-Aid that the cooler can hold is 19,915.04 cubic inches.

Step-by-step explanation:To calculate the maximum amount of Kool-Aid that can be held in the rectangular cooler, we need to find the volume of the cooler. The formula for calculating the volume of a rectangular prism is V = lwh, where l is the length, w is the width, and h is the height.

Substituting the given values, we get:

V = 48 inches x 22.6 inches x 18.3 inches

V = 19,915.04 cubic inches

Answer:A. C=48.16+0.34L

Step-by-step explanation:

I just know

Answer:

3/4

Step-by-step explanation: Using the slope formula, we know that Slope (m) = y2-y1/x2-x1 (The numbers are shown lower than the variables as subscripts). From the given two points, y2=7, y1=-2, x2=16, x1=4. 7-(-2) is 9, and 16-4 is 12. Your answer is 9/12, or 3/4 when simplified.

Answer:

Its A

Step-by-step explanation:

i thought it was D but im tired-

Answer:

i think its a

Step-by-step explanation:

Answer:

Hey there!

Original Equation

-5x-4y=-8

Multiply by -1

5x+4y=8

Subtract 4y

5x=8-4y

Divide by 5

x=(8-4y)/5

Let me know if this helps :)

Answer:

x = -4/5y + 8/5

Step-by-step explanation:

So to single out x we use the communicative property,

its the moving of numbers and variables to each side of the equation.

So we have,

-5x - 4y = -8

+4y

-5x = 4y - 8

Divide -5 by both sides,

x = -4/5y + 8/5

Thus,

the equation rearanged is x = -4/5y + 8/5.

Hope this helps :)

Answer:

The answer is 9,034.

Answer:

Step-by-step explanation:

Plug in x and y first.  -5 + -5 + 5(-2) + 6(-2).  -5 +-5= -10.  -10 + 5(-2) + 6(-2).  5 times negaitve 2 is -10 and 6 times negaitve 2 is negative 12.  -10 + -10 + -12 =-32

Answer:

Step-by-step explanation:

Answer:

y=-3/4x+2

y=2/5x-3

Step-by-step explanation:

Answer:

i'll just take some points hehe the other guy is correct!

Step-by-step explanation:

Answer:12/15 and 8/10 do have the same value, if you were to take the two fractions and simplify them into decimals both answers would be 0.8.

Step-by-step explanation: please give brainliest.

Answer: yes they are the same

Step-by-step explanation:

Answer:

it answer was 10 ok.......,

Answer:

16.25

Step-by-step explanation:

each rod is 6.5 and 5 of those are connected togther

meaning the total length of those 5 rods is 6.5 x 5 or 32.5

the problem says that the length of those 5 rods are cut in half and wants to the length of those half-cutted pieces

to do that, simply divide 32.5 (the length of 5 rods) by 2

(or you could multiply 32.5 with 1/2)

and you get 16.25

~lmk if u got Qs

Answer:

16,25

Step-by-step explanation:

6,5*5=35,5

35,5/2=16,25

Answer:

$151.5

Step-by-step explanation:

$75 - 10% = $67.5

$105 - 20% = $84

$67.5 + $84 = $151.5

Answer:

15.51

Step-by-step explanation:

79.62-64.11

=15.51

Answer:

D: $1,858.08

Step-by-step explanation:

if u add $1,329.64 and $528.44 then you get $1,858.08

Answer:

of the First rectangle Is smaller than the second the factor Is greater than One , if the First and the second are the same the scale factor Is one, and of the First Is bigger than the second the factor Is less than one

so:

a greater

b greater

c less

D greater

e equal

f less

g equal

Answers in bold:

========================================================

Explanation:

We have these three rules for scale factors

With those rules in mind, we have enlargements for these transformations.

All of which represent some scale factor larger than 1. We don't have enough information to pinpoint what that scale factor would be.

In other words, if you go from small to big, then you apply some scale factor larger than 1 to enlarge the image.

----------------

We also have these reductions

This is where we go from big to small. The image shrinks and we use some scale factor between 0 and 1.

----------------

And finally we have these transformations in which the size of the image does not change. Therefore the scale factor is 1.

The order doesn't matter for this subset, but the order will matter for the other batches of transformations.

Answer:

B. (36, -12)

Step-by-step explanation: