All categories

2 years ago

Need help on this please

Mathematics

1 answer:

Tom [10]2 years ago

4 0

Step-by-step explanation:

the slope-intercept form is

y = ax + b

"a" is the slope (the slope is in all forms the factor of x). and "b" is the y-intercept (the y value when x = 0).

so the first equation is

y = -5x + b

b we get by using the point coordinates :

-22 = -5×5 + b = -25 + b

b = 3

so, the full equation is

y = -5x + 3

for the second equation we need to calculate the slope first. remember, it is the ratio "y coordinate change / x coordinate change" :

x changes by +1 (from -4 to -3).

y changes by +7 (from -2 to 5).

the slope is +7/+1 = 7/1 = 7.

the equation looks like

y = 7x + b

again, we use the coordinates of a point to get b. I picked (-4, -2) :

-2 = 7×-4 + b = -28 + b

b = 26

and the full equation is

y = 7x + 26

You might be interested in

Which expression is equivalent to 4 sqrt 24x^6y/128x^4y^5

Stels [109]

The first step for finding out if the expression provided is equivalent to $\sqrt{4}$ is to reduce the fraction with $x^{4}$ .
$\frac{24 x^{2} y}{128 y^{5} }$
Now reduce the fraction with y.
$\frac{24 x^{2} }{128 y^{4} }$
Finally,, reduce the fraction with 8 to get your final answer.
$\frac{3 x^{2} }{16 y^{4} }$
Let me know if you have any further questions.
:)

5 0

3 years ago

What is the area of the square? Help me pls

Allushta [10]

Answer and Step-by-step explanation:

First, we need to find out the circumference of the circle.

We know that the circle has a radius of 1, and that we are finding the circumference. We'll use the circumference equation of a circle.

2 $\pi$ r

Plug in 1 for r.

$2\pi (1)$ = $2\pi$ = circumference of circle

Now, multiply the answer (the circumference) by 4 to get the perimeter of the square.

$2\pi$ x 4 = $8\pi$ = perimeter of square

Now, divide the perimeter by 4 to get what the side of the square is.

$8\pi$ ÷ 4 = $2\pi$

Now, multiply $2\pi$ by $2\pi$ (side times side) to get the area.

$2\pi$ x $2\pi$ = $4\pi$

The answer is A. $4\pi$

#teamtrees #PAW (Plant And Water)

I hope this helps!

Brainliest is appreciated,

8 0

3 years ago

An item that has been marked up sells for a profit. If an item sells that has been marked down, can it still produce a profit? E

lana66690 [7]

Yes, it can. On most things (especially clothes and furniture) they will be already marked up 100% before the mark down. For example; even if they have a, let's say, 40% off sale on the shirt, they will still make a 10% profit off the shirt. So pretty much in most cases, there will still be a profit out of the merchandise.

This is for the Journal Activity on e2020. The words required to pass the written response are as follows: Yes, profit, less, more, greater, much.

Use any 2 of those words in your response and you will pass it.

Have a good day everyone! :)

6 0

4 years ago

PLEASE HELP PICTURE IS SHOWN

Drupady [299]

D
K is the second letter in the first triangle and N is the second letter in the other triangle

3 0

4 years ago

I appreciate any help. Trying to get the hang of these.

aliya0001 [1]

Answer:

x = 12

Step-by-step explanation:

Since the top line is equal to the bottom, you make the equation -

x + x + 4 = x + 16

You subtract an x on both sides because there is one on each side -

x + 4 = 16

Then you subtract the 4 from both sides to get x by its self, which makes

x = 12

7 0

3 years ago

Read 2 more answers

Need help on this please​

Need help on this please