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3 years ago

Help me find x and y plz and thank you!

Mathematics

1 answer:

Luba_88 [7]3 years ago

3 0

Answer:

x=3, y=5

Step-by-step explanation:

To find x:

Because opposite sides of a parallelogram are congruent, we can set up the equation 2x+5=12x-25. Solving the equation will show that x=3.

To find y:

Using the same method as x, we can find that y=5.

Hope this helped!

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Find the zeros of the quadratic function: f(x) = x2 + 8x – 20 0 = ax2 + bx + c What is the factored form of the function? What a

Ilia_Sergeevich [38]

The factored form of the equation is f(x) = (x - 2)(x + 10), which makes the zeros of the function x = -10 and x = 2.

In order to factor a quadratic like this, you must find factors of the constant (in this case -20). The pairs of factors are listed below.

1 and -20

-1 and 20

2 and -10

-2 and 10

4 and -5

-4 and 5

Now we must pick out the pair that add to the coefficient of x.

1 and -20

-1 and 20

2 and -10

-2 and 10

4 and -5

-4 and 5

Once you've picked out those numbers, you can place each in a parenthesis with x.

f(x) = (x - 2)(x + 10)

Then to find the zeros to the equation, set each parenthesis equal to 0 and solve.

x - 2 = 0

x = 2

x + 10 = 0

x = -10

3 0

3 years ago

Read 2 more answers

What is 2000÷1000=

olga2289 [7]

Answer:

The answer to your qeutsion is 2 or in a equation form it would be 2000 divided by 1000 equals 2.

3 0

3 years ago

37/50 if a number is what percentage<br> of that number

Ghella [55]

Answer:

74%

Step-by-step explanation:

do 37/50 x 100 and that will give you 74.

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4 years ago

Which shows 7 1/2 in decimal form?

Cloud [144]

Answer:

I think the answer choices are incorrect. 7 1/2 in decimal form would be 7.5. Please correct me if I'm wrong.

Step-by-step explanation:

7 0

3 years ago

An air traffic controller spots two airplanes at the same altitude converging to a point as they fly at right angles to each oth

muminat

So.... notice the picture below

we know when y = 140 and x = 240, r = 250

so let's use the pythagorean theorem

$\bf r^2=x^2+y^2\implies 2r\cfrac{dr}{dt}=2x\cfrac{dx}{dt}+2y\cfrac{dy}{dt}\implies \cfrac{dr}{dt}=\cfrac{x\frac{dx}{dt}+y\frac{dy}{dt}}{r}
\\\\\\
\cfrac{dr}{dt}=\cfrac{240\cdot 480+70\cdot 140}{250}\implies \cfrac{dr}{dt}=500$

now... how much time does the controller have? well, say, plane "y" is going at dy/dt of 140mph, and is 70 miles away, 140 is 2*70, so it can cover those 70 miles in 1/2 hr, and when it does, it'll collide with the other,

so, the controller has that much, less than 1/2 hr

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4 years ago