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zheka24 [161]
3 years ago
7

Solve the proportion x+1/x-1 = 14/20

Mathematics
2 answers:
polet [3.4K]3 years ago
4 0
Cross multiply
20(x+1)=14(x-1)
20x+20=14x-14
Subtract 14x on each side giving you
6x+20=-14
Subtract 20 on each side giving you
6x=-34
x=-34/6. Simplifying that you get x=-17/3. I hope this helps!!!
Tcecarenko [31]3 years ago
3 0

Answer:

X=-17/3

Step-by-step explanation:

x+1/x-1 = 14/20

20x+20=14x-14

Subtract 20 from both sides

20x+20-20=14x-14-20

Simplify

20x=14x-34

Subtract 14x from both sides

20x-14x=14x-34-14x

Simplify

6x=-34

Divide both sides by 6

6x/6=-34/6

Simplify

X=-17/3

Thank you for letting me help!!

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“Write an equation and solve for the unknown” I know it’s a lot but can someone help me with this
Svetradugi [14.3K]

Answer:

g) x = 30

h) x = 30

i) m = 55

j) x = 24

k) k = 45

Step-by-step explanation:

G)

all angles of a triangle add up to 180.

the square in the bottom right of the triangle is 90 btw

2x + x + 90 = 180

3x + 90 = 180

3x + 90 - 90 = 180 - 90

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H)

this is an Isosceles triangle.

that means the bottom two angles are equal.

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I)

2m is supplementary to the bottom right angle of the triangle.

that means they add together to make 180.

80 + 30 + (180 - 2m) = 180

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to save time I'm not going to write out the steps, its the same as the i.

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imagine this as a triangle and a square.

sorry I'm not sure how to explain this -.-

but the equation would be

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2k = 180 - 90

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L)

Im not sure how to solve this, I'm sorry :( hope you figure it out!

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What binomial do you have to add to the polynomial 2x^2+3y^2-5xy+1 to get the following?
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Binomial -3y^{2}+5xy when added to polynomial 2x^{2} +3y^{2} -5xy+1  gives  polynomial  that does not contain the variable y .

<h3>What is binomial?</h3>

A mathematical expression consisting of two terms connected by a plus sign or minus sign .

Example: x + 2 is a binomial, where x and 2 are two separate terms.

<h3>What is polynomial?</h3>

A polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer

According to the question

polynomial 2x^{2} +3y^{2} -5xy+1

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To know more about Binomial and polynomial here :

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