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3 years ago

Can someone help me please help help help please!!!

Mathematics

1 answer:

GuDViN [60]3 years ago

8 0

Answer:

part b is -y1

Step-by-step explanation:

its like subtracting regular numbers just add y so 1-2=-1 then add y so =-1y

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Q.4 - Please Help, I will give Brainliest!!!!

ankoles [38]

-x/12 = -(1/12)(x) or D

4 0

3 years ago

Prove algebraically that r = 10/2+2sinTheta is a parabola

Xelga [282]

Answer:

$y = - \frac{ 1 }{10} {x}^{2} + \frac{5}{2}$

Step-by-step explanation:

We want to prove algebraically that:

$r = \frac{10}{2 + 2 \sin \theta}$

is a parabola.

We use the relations

${r}^{2} = {x}^{2} + {y}^{2}$

and

$y = r \sin \theta$

Before we substitute, let us rewrite the equation to get:

$r(2 + 2 \sin \theta) = 10$

$r(1+ \sin \theta) = 5$

Expand :

$r+ r\sin \theta= 5$

We now substitute to get:

$\sqrt{ {x}^{2} + {y}^{2} } + y = 5$

This means that:

$\sqrt{ {x}^{2} + {y}^{2} }=5 - y$

Square:

${x}^{2} + {y}^{2} =(5 - y)^{2}$

Expand:

${x}^{2} + {y}^{2} =25 - 10y + {y}^{2}$

${x}^{2} =25 - 10y$

${x}^{2} - 25 = - 10y$

$y = - \frac{ {x}^{2} }{10} + \frac{5}{2}$

This is a parabola (0,2.5) and turns upside down.

4 0

3 years ago

What are or is function? <br>(Please explain in you your word)

podryga [215]

Answer:

In mathematics, a function is a binary relation between two sets that associates every element of the first set to exactly one element of the second set. Typical examples are functions from integers to integers, or from the real numbers to real numbers.

Step-by-step explanation:

8 0

3 years ago

X+9=24 how to solve for x

rodikova [14]

You can easily do just one step to get the value of x.

x + 9 =24 subtract 9 from both sides

x + 9 - 9 = 24 - 9

Simplify:

x = 15

I hope I helped you.

5 0

3 years ago

Read 2 more answers

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scoundrel [369]