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3 years ago

What is 2x+3x+x+9 simplified

Mathematics

2 answers:

murzikaleks [220]3 years ago

4 0

6x+9 hope this helps

Rashid [163]3 years ago

3 0

Answer:

6x+9

Step-by-step explanation:

2x+3x+x equals 5x

then you have the nine left over so you get 6x+9

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Find the Error. Judith states that -|14| = 14 because the absolute value can never be negative. Find her mistake and correct it.

AURORKA [14]

Answer:

-14

Step-by-step explanation:

The negative sign is not inside of the absolute value sign so it would be -14

5 0

2 years ago

Solving quadratic equations with complex solutions x2 + 4x + 8 = 0.

Daniel [21]

Answer:

$\large\boxed{x=-2\pm2i}$

Step-by-step explanation:

$x^2+4x+8=0\qquad\text{subtract 8 from both sides}\\\\x^2+4x+8-8=0-8\\\\x^2+2(x)(2)=-8\qquad\text{add}\ 2^2\ \text{to both sides}\\\\x^2+2(x)(2)+2^2=-8+2^2\qquad\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\(x+2)^2=-8+4\\\\(x+2)^2=-4\iff x+2=\pm\sqrt{-4}\\\\x+2=\pm\sqrt{(4)(-1)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\x+2=\pm\sqrt4\cdot\sqrt{-1}\qquad\text{use}\ \sqrt{-1}=i\\\\x+2=\pm2\cdot i\qquad\text{subtract 2 from both sides}\\\\x=-2\pm2i$

4 0

2 years ago

What is the y intercept, WILL GIVE 15 POINTS WHOEVER GIVES CORRECT ANSWER

DENIUS [597]

Answer:

The relationship between x and y is 6.

Step-by-step explanation:

6 - 0 = 6

10 - 4 = 6

8 0

2 years ago

Read 2 more answers

Find the fifth term of a sequence whose first term is 8 and common ratio is 3/2

Arlecino [84]

Answer:

Option c. 81/2

Step-by-step explanation:

Fifth term: a5=?

First term: a1=8

Common ratio: r=3/2

an=a1*r^(n-1)

with n=5

a5=a1*r^(5-1)

a5=a1*r^4

Replacing the known values:

a5=8*(3/2)^4

a5=8*(3)^4/(2)^4

a5=8*81/16

Simplifying: Dividing the numerator and denominator by 8:

a5=(8*81/8)/(16/8)

a5=81/2

Answer: Option c. 81/2

3 0

3 years ago

Let A={15,25,35,45,55,65} and B= {25,45,65} what is A n B?

ss7ja [257]

Answer:

[25, 45,65]

Step-by-step explanation:

These are the common terms in A as well as B

6 0

2 years ago