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Lyrx [107]
3 years ago
8

Multiply (2x - 3) and (3x + 6)

Mathematics
1 answer:
damaskus [11]3 years ago
6 0

Answer:

Step-by-step explanation:

(2x−3)(3x+6)

=(2x+−3)(3x+6)

=(2x)(3x)+(2x)(6)+(−3)(3x)+(−3)(6)

=6x2+12x−9x−18

=6x2+3x−18

You might be interested in
A carpenter cut a 13 1/2 foot piece of wood into 3/4 foot pieces. After cutting the wood, how many pieces did the carpenter have
avanturin [10]

Answer:    

18

Step-by-step explanation:

  1. Turn the mixed number into an improper fractions: 13 × 2 = 26, 26 + 1 = 27
  2. Re-write improper fraction: \frac{27}{2}  
  3. \frac{27}{2} ÷ \frac{3}{4} = \frac{27}{2} × \frac{4}{3}  
  4. \frac{27}{2} × \frac{4}{3} = \frac{108}{6}  
  5. 108/6 = 18

I hope this helps!

4 0
3 years ago
You pay a processing fee and a daily fee to rent a beach house. the table shows the total cost of renting the beach house for di
liberstina [14]

Answer:

a) The daily fee is $102

The processing fee is $42

b) The maximum number of days the beach house can be rented with no more than $1,200 is (by rounding down) 11 days

Step-by-step explanation:

The data given in the table are as follows;

Number of days (t)  {}                       Total cost, T (dollars)

2               {}                                       246

4   {}                                                   450

6  {}                                                    654

8   {}                                                   858

Whereby, we have that the processing fee is P, and the daily fee is D, we can write;

Total cost, T = D × t + P

From the table, we have;

When t = 2 days and T = $246, the above equation for total cost becomes;

$246 = D × 2 + P = 2·D + P

246 = 2·D + P.....(1)

Similarly, when t = 6 days, and T = $654, we have;

$654 = D × 6 + P = 6·D + P

654 = 6·D + P.....(2)

Subtracting equation (1) from equation (2) gives;

654 - 246 = 6·D + P - (2·D + P)

408 = 4·D

D = 408/4 = 102

The daily fee, D = $102

From equation (1), we have;

246 = 2·D + P = 2 × 102 + p

p = 246 - 2 × 102 = 42

P = $42

The processing fee, P = $42

b) Given that the maximum amount available (total amount) for spending on the beach house rental = $1200, we have;

T = D × t + P

Where, D = $102 and P = $42 are constants and T = $1,200, we have;

1,200 = 102 × t + 42

t = (1200 - 42)/102 ≈ 11.35 days

Given that we can only rent the beach house for a whole number of days, the number of days the beach house can be rented is therefore, by rounding down, t = 11 days.

3 0
3 years ago
Is it possible to have an expression that uses brackets without using parentheses? Explain.
Anna [14]
Yes, because if it has brackets, it just means it is an absolute value
8 0
3 years ago
Read 2 more answers
Find the area of this trapezoid. Be sure to include the correct unit in your answer.
musickatia [10]

Answer:

60 m²

Step-by-step explanation:

Area of trapezium = 1/2 (a + b) h

= 1/2 (3 + 17) 6

= 1/2 * 20 * 6

= 60 m²

8 0
3 years ago
Read 2 more answers
Give the dilation below, determine the scale factor and center.
kvasek [131]

Answer:

scale = ½

center = (2, -5)

Step-by-step explanation:

The distance between A and B is 8

The distance between A' and B is 4

therefore the dilation scale factor is 4/8 = ½

As B and B' have the same x value, the center must also have the same x value of 2

The y value for A is -1

The y value for A' is -3

IF the y value for the center is Y

½(Y - (-1)) = (Y -(-3))

½(Y + 1) = (Y + 3)

½Y + ½ = Y + 3

-2.5 = ½Y

Y = -5

5 0
3 years ago
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