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mel-nik [20]
3 years ago
11

(Give Brainliest)need ASAP

Mathematics
1 answer:
cupoosta [38]3 years ago
3 0

Answer:

the answer is 1/2

Step-by-step explanation:

Mean is add up all the numbers and divide by how many numbers there is, so -(2+5-10+15)/4, which is 2/4 or 1/2 plz mark brainliest hope this helps

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Factorise k(a³ + b³)-m(a³ + b³)​
Neporo4naja [7]

Answer:

this is so easy

Step-by-step explanation:

8 0
3 years ago
What is the equation of this graph
Soloha48 [4]

Answer:

Step-by-step explanation:

hello :

an equation of this graph is : f(x) = a(x-h)²+k when (h,k) the vertex

so : h=5 and k= -4

f(x) = a(x-5)²-4....... now calculate : a

the y- intercept is :  - 6.5 means : f(0) = - 6.5

put x=0 and f(x) = - 6.5

you have : -6.5 = a(0-5)²-4

-6.5 = 25a - 4

25a = -2.5   so : a= -2.5/25= 1/10

the equation is :

<h2>f(x) = (1/10)(x-5)²-4</h2>
5 0
3 years ago
Look at the image please help I’m struggling
Monica [59]

Answer:

Step-by-step explanation:

rise over run

from the bottom to where the point is

From (0,0) to (4,3)

you rise 3 and run 4

So I think the Slope is 3/4

7 0
3 years ago
An arc subtends a central angle measuring \dfrac{\pi}{2}
Agata [3.3K]

Arc Length is 1/4th of the circumference .

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

Here we need to find fraction of the circumference is this arc when An arc subtends a central angle measuring \dfrac{\pi}{2} radians ! Let's find out :

We know that circumference of an arc subtending a central angle of x is :

⇒ Arc = \frac{Angle}{360}(2\pi r)

⇒ Arc = \dfrac{\frac{\pi}{2}}{360}(2\pi r)

⇒ Arc = \frac{90}{360}(2\pi r)

⇒ Arc = \frac{90}{90(4)}(2\pi r)

⇒ Arc = \frac{1}{4}(2\pi r)

⇒ Arc = \frac{1}{4}(Circumference)

Therefore , Arc Length is 1/4th of the circumference .

4 0
3 years ago
How much is 90p in Shillings?
Helga [31]
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8 0
3 years ago
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