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Tcecarenko [31]
3 years ago
11

Please explain btw you can use symbols to use things like √ ² ³

Mathematics
1 answer:
mash [69]3 years ago
6 0

Answer:

the correct solution is letter A.

Step-by-step explanation:

We have the following expression:

6sqrt(7) - 5x*sqrt(7) - x*sqrt(7)

Grouping the expression, we have:

=sqrt(7)*[6 - 5x - x]

=sqrt(7)*[6 - 6x]

=  6*sqrt(7)- 6x*sqrt(7)

So the correct solution is letter A.

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The fourth term of a Geometric Progression is 48 and the sixth term is 12. Find the
erastova [34]

Answer:

Common ratio = 1/2 and first term = 384

or common ratio = -1/2 and first term = -384.

Step-by-step explanation:

T6/T4 = r^5 / r^3  where r = the common ratio and T6 and T4 are 6th and 4th terms

r^5 / r^3 = 12/48

r^2 = 1/4

so r = +/- 1/2.

The 4th term = a r^3  where a = first term.

If r = 1/2:-

48 = a *(1/2)^3 = a/8  

a = 8*48

= 384.

if r = -1/2,  then a = -384

7 0
3 years ago
Which set of graphs can be used to find the solution set to 3 log2(x + 4) < 6?
alexgriva [62]

Answer:

It's graph D

Step-by-step explanation:

5 0
3 years ago
Which of the following is a rational function
mylen [45]

WHERE IS THE PIC TO SEE IT

I AM NOT ABLE TO SEE

8 0
3 years ago
If x = 5 and 5 = y, then x = y
garri49 [273]
You are right. Transitivity means, that:
if a = b and b = c, then a = c
(here a = x, b=5 and c = y).
5 0
4 years ago
Multiply<br> (2x + 5z)(7x - 6z)<br> Simplify your answer.
Ugo [173]

Hello!

Explanation:

Distributive property: a(b+c)=ab+ac

Multiply by the numbers.

Product it's going to be multiply by the numbers, fractions, decimals, factors, and multiples.

First, apply used their FOIL.

Foil: (a+b)(c+d)=ac+ad+bc+bd

2x*7x+2x(-6z)+5z*7x+5z(-6z)

Then you can also apply by the minus/plus sign.

2*7xx-2*6xz+5*7xz-5*6zz

And finally simplify by equation.

2*7xx-2*6xz+5*7xz-5*6zz

<em><u>Answer: =14x²+23xz-30z²</u></em>

Hope this helps!

-Charlie

Thanks!

5 0
3 years ago
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