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zheka24 [161]
4 years ago
7

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

Mathematics
2 answers:
polet [3.4K]4 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]4 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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How do you find the quadratic function with vertex (-2,5) and point (0,9)?
Anastaziya [24]

Answer: y = (x +2)² + 5

<u>Step-by-step explanation:</u>

y = a(x - h)² + k <em>where "a" is the leading coefficient and (h, k) is the vertex</em>

Since we don't know "a", we need to plug in the point (x, y) and the vertex (h, k) to solve for "a":  (x, y) = (0, 9) and (h, k) = (-2, 5)

y = a(x - h)² + k

9 = a(0 - (-2))² + 5

9 = a(0 + 2)² + 5

9 = a(2)² + 5

<u>-5 </u>   <u>          -5 </u>

4  =  a(4)

<u>÷4 </u>   <u> ÷4   </u>

 1 = a

Next, plug in "a" and the vertex (h, k):

y = a(x - h)² + k

y = 1(x +2)² + 5

y = (x +2)² + 5


6 0
4 years ago
Solve the system by graphing.<br> y = 1/2 x + 3/2 <br> y = 2x -3
vaieri [72.5K]

Step-by-step explanation:

y=0.5x+1.5

y=2x-3

y=1.5

x=-3

for the second line

y=-3

x=3/2

4 0
3 years ago
Complete the square. Fill in the number that makes the polynomial a perfect-square
NeX [460]

Answer:

h² - 10h + <u>25</u>

Step-by-step explanation:

h² - 10h + _ → (h - 5)² = h² - 10h + 25

3 0
3 years ago
I need help with geometry
Andreyy89
T= 34

Explanation

So measure t equals measure s also since it’s a isosceles triangle!

Then we combine all the equations together and set it equal to 180 because every triangle is 180°.

3x-2 + 3x-2 + 9x+4 = 180

Now we combine like light terms

3x + 3x + 9x -2 -2 +4 = 180

15x= 180

Now that we simplify the equation we solve for x

15x/15= 180/15. Divide both sides by 15

X= 12

The problem ask what the measure of t is so we plug the 12 into the equation to find the measure

3x-2= 3(12)-2

36-2= 34

So the measure of t is 34°

I hope this helped pls mark as brainliest
8 0
3 years ago
How can I change a decimal to a fraction ?
kramer

Answer:

there is a calculator online which is every helpful and it shows how to do it.

Step-by-step explanation:

in google just type "decimal to fraction calculator" and the first one should do it. hopefully it helped

4 0
3 years ago
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