3 years ago

Pls can you help me answer all of them

Mathematics

1 answer:

MaRussiya [10]3 years ago

3 0

Answer:

Step-by-step explanation:

dk search it up u may find sum help

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Which expression is a perfect cube?<br> -8x^21y^8<br> -64x^64y^64<br> -125x^9y^20<br> -216x^9y^18

inysia [295]

Answer:

$-216x^9y^{18}$

Step-by-step explanation:

$~~-216 x^9 y^{18}\\\\=(-6)^3 (x^3)^3 (y^6)^3\\\\=(-6x^3 y^6)^3$

4 0

2 years ago

Given the sequence 4, 8, 16, 32, 64, ..., find the explicit formula.

Goshia [24]

Answer:

$\sf 2^{(n+1)}$

Step-by-step explanation:

Explicit formula is used to represent all the terms of the geometric sequence using a single formula.

$\sf \boxed{\bf t_n=ar^{(n-1)}}$

Here, a is the first term.

r is the common ratio.

r = second term ÷ first term

4, 8,16,32,64,.....

a = 4

r = 8 ÷4 = 2

$\sf t_n =4*2^{(n-1)}$

$\sf = 4*2^n * 2^{(-1)}\\\\ = 4*2^n*\dfrac{1}{2}\\\\ = 2*2^n$

$\sf = 2^{(n+1)}$

4 0

2 years ago

What is the slope of the equation 3x + 5y = -20

saul85 [17]

you would add 3y+5y and get 8y=-20

then the slope would be 8/1 and your y-intercept would be -20

3 0

3 years ago

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HELPPPPPPPPPPPPPPPPPPP

mixas84 [53]

Answer:

student a because the line has a negative slope not a positive slope

Step-by-step explanation:

3 0

2 years ago

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PLease help please please please please help help help me me em e

juin [17]

1) Which of the following is an example of a dilation?
The correct answer is A) The hearts.

2) If triangle ABC is reflected across line m, the new coordinates will be located at A'(2, -4) B'(7,-7) C'(-2, -7).
The answer is False.

I hope this helps! I can't really see #3. Sorry. But I got #'s 1 & 2 though!

4 0

3 years ago

Read 2 more answers