Expand the linear expression: 3(4x+3)

Answers

Answer 1

Answer: Simple,

3(4x+3)

Distribute the 3...

3*4x=12x
and
3*3=9

Thus, your answer, 12x+9.

Answer 2

Answer: 12x+9 that is your answer

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How do I solve 4x + 3y=0 & 2x + y = -2 using substitution

Answers

4x + 3y = 0
2x + y = -2
take 2x and subtract to the side with -2
it'll look like this: y = -2x - 2
plug that equation in where the y is in the other equation.
it'll look like this: 4x + 3(-2x - 2)=0
which you multiply 3 and the -2x and the -2
which the equation would be: 4x - 6x - 6=0
put together like terms: -2x - 6=0
add the 6 to the side with the zero: -2x = 6
divide both sides by -2 which x= -3
to get y you plug in the answer for x (-3)
2(-3)+y= -2
so it'd then be -6 + y = -2
add the -6 to the side with -2
y= -2 +6
y= 4
so your complete answer is ( -3, 4)

Solve : 4+3x =(3x-7)+9.

Answers

X=3
Hope this helped

Answer:

D.) x = 3

Step-by-step explanation:

4 + 3x = 2(3x - 7) + 9

4 + 3x = 6x - 14 + 9

3x - 6x = 9 - 14 - 4

-3x = -9

x = -(-9)/3

x = 9/3

x =3

Which of the following situations can be modeled by the equation n+0.50n-0.3n =1.2n, where n is the # of nickels originally in the jar?a. Amanda takes out 50% of the nickels in the jar on Friday and adds a number of nickels that is equal to 30% of the remaining number of nickels in the jar on Monday. There are 20% fewer nickels in the jar after Monday than before Friday.

b. Amanda takes out 50% of the nickels in the jar on Friday and adds a number of nickels that is equal to 30% of the original number of nickels in the jar on Monday. There are 20% fewer nickels in the jar after Monday than before Friday.

c. Amanda adds 50% of the original number of nickels to the jar on Friday. The number of nickels Amanda takes out on Monday is equal to 30% of the new number of nickels. There are 20% more nickels in the jar after Monday than before Friday.

d. Amanda adds 50% of the original number of nickels to the jar on Friday. The number of nickels Amanda takes out on Monday is equal to 30% of the original number of nickels. There are 20% more nickels in the jar after Monday than before Friday.

Answers

C. because n would equal 1 then add 50% or .5 then take 30% or.3 equaling 1.2

I need help plz!
Math

Answers

For this question, you can find the missing side length by using the Pythagorean Theorem: c² = a² + b²

The two side lengths you are given are 5 cm and 12 cm.
c² = 5² + 12²
c²= 25 + 144
c² = 169

Then find the square root of 169.

c= 13

Therefore the length of c is 13 cm.

Karen will divide her garden into equal parts she will plant corn and 8/12 of the garden what is the fewest number of parts she can divide her garden into

Answers

Answer – 3 parts
The garden is divided into 12 parts.
Karen will plant corn on 8/12 of the garden (or 2/3 of the garden, if both the numerator and denominator are divided by 4).
Therefore, the fewest number of parts she can divide her garden into is 3. She will plant corn on 2/3 of the garden and the other 1/3 of the garden will not be planted with corn.

Which ratio is equivalent to 3/20

Answers

The answer is D, 21 to 140
21 to 140 can be written as $(21)/(140)$
So if you multiply $(3)/(20)$ by $(7)/(7)$ , you get $(21)/(140)$ .

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