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2 years ago

I need help with this one too please !i mark brainliest to everyone

Mathematics

2 answers:

denis-greek [22]2 years ago

5 0

Answer:

I believe A is the answer

iren [92.7K]2 years ago

3 0

Anser is B) because it crosses the negative sevin on the negative side

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1/(x+1) - 1/(x+2) = 1/2

katen-ka-za [31]

Please include the instructions; I assume your job is to find the value of x.

1/(x+1) - 1/(x+2) = 1/2 would better be written as

1 1 1
-------- - ------------ = ----
x+1 x+2 2

Identify the LCD. It is (x+1)(x+2)(2). Mult. all 3 terms of the equation by this LCD:

2(x+2) - 2(x+1) = 2(x+1)(x+2)

We can factor out the 2 from all terms:

x+2 - x - 1 = x^2 + 3x + 2

Let's move all terms from the left to the right side:

0 = x^2 + 3x + 2 - x - 2 + x + 1

Then x^2 + 3x + 1 = 0. This is a quadratic with a=1, b=3 and c=1.

What is x?

-3 plus or minus sqrt( 9-4(1)(1) ) -3 plus or minus sqrt(5)
x = --------------------------------------------- = ---------------------------------
2 2

I rather expected to obtain an integer value for x.

Why don't you give this problem a try yourself? Suggestion: First mult. every term by 2. This will give you:

2 2
------- - ------- = 1 and this may be slightly easier to work with. Please
x+1 x+2 give it a try: try to find x that satisfies this equation.
Important: note that x cannot equal either -1 or -2.

8 0

3 years ago

Please help ASAP!!! I will mark the Brainliest!!

Svetlanka [38]

To answer this question, you need to know that a scale factor is the relationship between one dimension of the shape.

Because the information given to us is a two-dimensional measurement, you will need to consider that when getting the answer.

The ratios of the areas of the triangles is 3/5 x 3/5 or 9/25.

To determine the area of the larger triangle, you will solve the following equation using the information you know. x is the area of the larger triangle.

9/25x = 576; solve for x by dividing both sides by 9/25
x = 1600 square inches

The area of the larger triangle is 1600 square inches.

6 0

3 years ago

The LCM of 4, 9, and 10 is _______. 36 180 40 90

Anna [14]

Answer:

180

Step-by-step explanation:

Multiples of 4:

4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144, 148, 152, 156, 160, 164, 168, 172, 176, 180, 184, 188

Multiples of 9:

9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135, 144, 153, 162, 171, 180, 189, 198

Multiples of 10:

10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200

Stay safe and Merry Christmas! :)

8 0

3 years ago

Read 2 more answers

FitURite garage employs one manager and four fitters. The average (mean) salary for all employees is £18600. If the manager's sa

ollegr [7]

(25,000+4x)/5=18,600
25,000+4x=93,000 (multiply both sides by 5)
4x=68,000 (subtract 25,000 from both sides)
x=17,000 (divide both sides by 4)
Fitters make $17,000 a year

4 0

3 years ago

Tyler was shoving an equation and his last line of work read -12=12. What does this mean

wolverine [178]

Answer:

Step-by-step explanation:

-12 = 12 ....this is incorrect...meaning no solutions

if it ended in :

x = a number, or y = a number...means there is 1 solution

if it ended in :

-12 = 12....incorrect answer, means there is no solutions

if it ended in :

2 = 2 or -4 = -4....correct answer, but not variable...means infinite solutions

6 0

3 years ago

Read 2 more answers