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olchik [2.2K]
3 years ago
10

Expand 3(x+ 2.3) Expand 1/3(9x-12)

Mathematics
1 answer:
Snezhnost [94]3 years ago
4 0

Answer:

3x+6.9 and 3x-4

Step-by-step explanation:

since 3 x x is 3x and the sign in the bracket is addition you place it there then place 3 x 2.3

being 6.9.

1/3 x 9is 9/3 and 3 can multiply both sides to get 3/1 or 3 then bring the minus and 1/3 x 12 is 12/3 3 can multiply both sides to get 4/1 or 4

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100 points !
iren [92.7K]

Answer:

  • Given Below.

Step-by-step explanation:

(a)

\left(-5y^2-9y-4\right)-\left(-2y^2-y+8\right)

\left-5y^2-9y-4\right+\left2y^2+y-8\right)

-3y^2 -8y -12

(b)

\left(3x-2\right)\left(5x^2-7x+2\right)

15x^3-21x^2 +6x - 10x^2 +12x - 4

15x^3-31x^2+20x-4

4 0
3 years ago
Read 2 more answers
Boof<br>$543.51 is subtotal.
antiseptic1488 [7]

Answer:

The total of the sales price and sales tax is  $ 588.35 .

Step-by-step explanation:

As given

$543.51 be the subtotal .

8.25% is the sales tax .

8.25% is written in the decimal form.

= \frac{8.25}{100}

= 0.0825

Sales tax price = 0.0825 × 543.51

                         = $ 44.84  (Approx)

Total of sales price with sales tax = Sale price + Sales tax price

Putting the values in the above

                                                       = $543.51 + $44.84

                                                       = $ 588.35

Therefore the total of the sales price and sales tax is  $ 588.35 .

6 0
3 years ago
Bir sınıfta kız ve erkek öğrencilerin sayısı sırasıyla
kolezko [41]

Answer:

the answer is c jk

Step-by-step explanation:

3 0
3 years ago
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xxTIMURxx [149]

Answer:

A and C

Step-by-step explanation:

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| - 6 - 2 | = | - 8 | = 8

6 0
3 years ago
1. In a set of complementary angle one angle is 6 times
Rina8888 [55]

Answer:

x = 12 6/7º

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Step-by-step explanation:

complementary angles total 90º

x + 6x = 90

7x = 90

Divide both sides by 7

x = 12 6/7º

6x = 77 1/7º

4 0
3 years ago
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