3 years ago

Simplify 7x + 7 + 6x - 9.

Mathematics

2 answers:

jek_recluse [69]3 years ago

7 0

The answer to this is 13x-2

ratelena [41]3 years ago

3 0

The answer is 13x-2.

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Factor completely 3bx2 − 9x3 − b + 3x. (b − 3x)(3x2 − 1) (b + 3x)(3x2 + 1) (b + 3x)(3x2 − 1) Prime

Daniel [21]

$3bx^2-9x^3-b+3x=\boxed{3x^2}\cdot b-\boxed{3x^2}\cdot3x\fbox{-1}\cdot b\fbox{-1}\cdot (-3x)\\\\=\boxed{3x^2}(b-3x)\fbox{-1}(b-3x)=\boxed{(b-3x)(3x^2-1)}\\\\completely:\\use:a^2-b^2=(a-b)(a+b)\to3x^2-1=(x\sqrt3)^2-1^2=(x\sqrt3-1)(x\sqrt3+1)$
$therefore:\\3bx^2-9x^3-b+3x=(b-3x)(3x^2-1)\\=\underline{\underline{(b-3x)(x\sqrt3-1)(x\sqrt3+1)}}$

6 0

3 years ago

Read 2 more answers

Can you please help me I plead you

Levart [38]

Answer:

Question 2

x is approximately 15.038 or 15 days

Question 3

$3.41

Question 4

31.1

Step-by-step explanation:

Question 2

5.2 km/1 day =78.2 km/x days

Multiply both sides by x

5.2x=78.2

divide by 5.2

x is approximately 15.038

or 15 days

Question 3

350-(262.94+83.65)

$3.41

Question 4

22(1.3)+2.5

31.1 m

5 0

2 years ago

6/5 s = -2 <br><br> whats the answer solve the (s)

iVinArrow [24]

Answer: s= -5/3

Step-by-step explanation: hope this helps!

7 0

2 years ago

Read 2 more answers

What’s the correct answer for this?

STatiana [176]

Answer:

6.7

Step-by-step explanation:

8 0

3 years ago

Lots of point n brainliest SO help rq

nordsb [41]

Answer:

A. $6000

Step-by-step explanation:

Let the invested amount is x.

<u>Then the interest amount is:</u>

x*5*2.25/100 = 675
0.1125x = 675
x = 675 / 0.1125
x = 6000

Correct choice is A

7 0

3 years ago