2 years ago

Can someone help with these two questions

Mathematics

1 answer:

kherson [118]2 years ago

3 0

11,513 is the answer I really don't know how to write it all out sorry

You might be interested in

Find the length BC

Nady [450]

Answer:

The length of BC = 12

Step-by-step explanation:

c^2 = a^2 + b^2

15^2 = 9^2 + b^2

225 = 81 + b^2

b^2 = 225 - 81

b^2 = 144

b = 12

The length of BC is 12

5 0

3 years ago

When n=1 there is 1 dot. when n=2 there are 3 dots, when n=3 there are 6 dots. notice that the total number of dots increases by

gayaneshka [121]

Answer:

d(n) = n(n + 1)/2
n = 1 ⇒ d(1) = 1(1 + 1)/2 = 2/2 = 1, proved

d(k) + (k + 1) =
k(k + 1)/2 + (k + 1) =
[k(k + 1) + 2(k + 1)]/2 =
[(k + 1)(k + 1 + 1)]/2 =
d(k + 1)

Proved

6 0

2 years ago

Need help with finding X

Zarrin [17]

Answer:

Step-by-step explanation:

5 0

3 years ago

Complete the square to find the vertex of this parabola.<br><br> <img src="https://tex.z-dn.net/?f=y%5E2%20%2B%2012x%20-%2010y%2

Viefleur [7K]

The answer is : (2,5)

7 0

3 years ago

I need help with this one

LenaWriter [7]

The answer for 6 is -6,1/6

8 0

3 years ago