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iren [92.7K]
3 years ago
12

4{2a(3a-b)+3ab}+5{3b(a+2b)-4ab}

Mathematics
1 answer:
Paraphin [41]3 years ago
5 0
Follow order of operations.
Distribute what is in the parentheses.
4[6a^2 -2ab +3ab] + 5[3ab + 6b^2 -4ab]

Combine like terms in the brackets.
4[6a^2 + 3ab] + 5[-1ab + 6b^2]

Distribute the 4 and the 5.
24a^2 + 12ab -5ab + 30b^2

Combine like terms.
24a^2 +7ab + 30b^2

That's your final answer:
24a^2 +7ab + 30b^2
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Jeff has two sticker-printing machines. Each machine can print 42 stickers per minute. On day 1, only the first machine was used
Anna71 [15]

Answer:

c 89+42x+42y

Step-by-step explanation:

On day 1 :

First Machine= 89 stickers

Second Machine= none

On day 2 :

First Machine= ? stickers ( if in 1min = 42stickers

x min=?

( x min/1 min × 42stickers)

=42x stickers.

Second Machine=?stickers ( if in 1min = 42stickers

y min=?

( y min/1 min × 42stickers)

=42y stickers.

Total = 89 + 42x + 42y

5 0
2 years ago
How do i do this math problem?
Evgesh-ka [11]

Answer:

3x

Step-by-step explanation:

The area of a triangle is (base × height)/2.

In this picture, the base is 3.

The height is 2x.

(3×2x)/2

=6x/2

=3x

7 0
3 years ago
Select the correct answer.
ziro4ka [17]

Answer:

A function only

Step-by-step explanation:

This situation represents a function only.  Air pressure is the independent (input) variable and the weight of the candy dispensed is the dependent variabe:

weight = 3(pressure on the lever)

This has the form of a function, as well as of a direct proportion.

6 0
3 years ago
Algebra please help fast
Artyom0805 [142]

Answer:

n = 20

Step-by-step explanation:

\frac{n+4}{6} = 4

You need to get rid of the 6 in the denominator on the left hand side to make it easier to solve, so multiply both sides by 6. So you would get:

( \frac{n+4}{6} ) × 6 = 4 × 6

n+4 = 24

Then just rearrange for n by subtracting 4 on both sides.

n+4 = 24

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n=20

5 0
3 years ago
Read 2 more answers
Could anyone give me some quick help with this?
Vika [28.1K]

Answer:

a) 8xy = (4)(2xy)

b) 15x⁴z = (5x²)(3x²z)

c) -12x³y³ = (3y³)(-4x³)

d) 8x-2y = (2)(4x-y)

Step-by-step explanation:

a) 8xy = (4)(2xy) for the right side to equal the left 2xy needs to be multiplied by 4 to equal 8xy

b) 15x⁴z = (5x²)(3x²z) you need to multiply 5x² by 3x²z to equal 15x⁴z.

5*3 = 15 and x²*x² = x⁴ so 15x⁴*z = 15x⁴z

c) -12x³y³ = (3y³)(-4x³) becuase -4*3 = -12 and x³*y³ equal x³y³

d) 8x - 2y = (2)(4x-y) when you multiply 2 by 4x-y it equals 8x-2y

PLEASE RATE!! I hope this helps!!

If you have any questions comment below

4 0
2 years ago
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