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2 years ago

I will give brainliest and A LOT OF POINTS please help!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

DedPeter [7]2 years ago

3 0

Answer:

(10,2)(20,4)(30,6)(40,8)

Step-by-step explanation:

In each bracket the first digit divided by the second is equal to 5

10÷2=5

20÷4=5

30÷6=5

40÷8=5

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Whats 20 inches and 7 feet as a fraction in simpalist form

Rudik [331]

4 4/7 feet is it's simplest form because 20 I'm chea equal 1.67 feet and 7 feet equals 84 inches so do 20 × 4 = 80 then you would have 4 left over and turn that into 4/7

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3 years ago

Find+the+positive+value+for+α+if+the+radius+of+the+circle+3x^2+3y-6αx+12y-3α=0+is+4

Alik [6]

Answer:

$\alpha=3$

Step-by-step explanation:

<u>Equation of a Circle</u>

A circle of radius r and centered on the point (h,k) can be expressed by the equation

$(x-h)^2+(y-k)^2=r^2$

We are given the equation of a circle as

$3x^2+3y^2-6\alpha x+12y-3\alpha=0$

Note we have corrected it by adding the square to the y. Simplify by 3

$x^2+y^2-2\alpha x+4y-\alpha=0$

Complete squares and rearrange:

$x^2-2\alpha x+y^2+4y=\alpha$

$x^2-2\alpha x+\alpha^2+y^2+4y+4=\alpha+\alpha^2+4$

$(x-\alpha)^2+(y+2)^2=r^2$

We can see that, if r=4, then

$\alpha+\alpha^2+4=16$

Or, equivalently

$\alpha^2+\alpha-12=0$

There are two solutions for $\alpha$ :

$\alpha=-4,\ \alpha=3$

Keeping the positive solution, as required:

$\boxed{\alpha=3}$

8 0

3 years ago

Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest

Slav-nsk [51]

Answer:

walnut park

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

What is the slope of the line that passes through (8,4) and (6,7)?

bija089 [108]

$slope=\frac{y_2-y_1}{x_2-x_1}\\\\ 
(x_1,y_1)=(8,4)\\ 
(x_2,y_2)=(6,7)\\\\
 slope=\frac{7-4}{6-8}=\frac{3}{-2}=-\frac{3}{2}\\\\
Slope\ is\ equal\ to\ -\frac{3}{2}.
$

4 0

3 years ago

Help me out pls!!!??

zheka24 [161]

The answer is B

the steps are these

interchange the x and y variables

x=5y-8

solve for y so we get
y = x+8
----
5

5 0

3 years ago

Read 2 more answers