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Keith_Richards [23]
3 years ago
12

Expand and simplify (x − 3)(2x + 3)(4x + 5)

Mathematics
2 answers:
Rom4ik [11]3 years ago
7 0

Answer:

8x^3-2x^2-51x-45

Step-by-step explanation:

(x − 3)(2x + 3)(4x + 5)

(2x^2+3x-6x-9)*(4x+5)

(2x^2-3x-9)*(4x+5)

= 8x^3-2x^2-51x-45

Paraphin [41]3 years ago
6 0

Answer:

8x³ - 2x² - 51x - 45

Step-by-step explanation:

Given

(x - 3)(2x + 3)(4x + 5) ← expand second/third factors using FOIL

= (x - 3)(8x² + 22x + 15) ← distribute

= x(8x² + 22x + 15) - 3(8x² + 22x + 15) ← distribute parenthesis

= 8x³ + 22x² + 15x - 24x² - 66x - 45 ← collect like terms

= 8x³ - 2x² - 51x - 45

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Jack bought 4 bagels for 3.00. how many bagels can he buy for 4.50?
bija089 [108]

Answer:

The answer is

<h2>6 bagels</h2>

Step-by-step explanation:

In order to solve this problem we use ratio and proportion

From the question

He used 3.00 to buy 4 bagels

Then 4.50 will be

\frac{4.5 \times 4}{3}  \\  =  \frac{18}{3}

We have the final answer as

<h3>6 bagels</h3>

Hope this helps you

6 0
3 years ago
Read 2 more answers
Soooo again in meters I'm soo sorryyy​
vovikov84 [41]

I think 710 is the answer

266+266+89+89= 710

8 0
3 years ago
a rectangular parking lot has a length that is 8 yards greater than the width. the area of the parking lot is 180 yards. find th
Art [367]

Answer:

Sorry the Length is 18, while the width/breadth is 10

5 0
3 years ago
a museum opened at 8:00 am. in the first hour 350 people purchased admission tickets. in the 2nd hour 20% more people purchased
Levart [38]

Okay, so we already know that 350 people purchased tickets in hour 1:

17.50(350 + ?) = ?

The question states that in the 2nd hour, there was 20% more people. So basically, we solve for 120% of the people from the 1st hour:

17.50(350 + 1.2(350)) = ?

Multiply 1.2 by 350:

17.50(350 + 420) = ?

Add:

17.50(770) = ?

Multiply:

17.50(770) = 13475

$13,475 was the total amount of money.



5 0
3 years ago
Bryce has to complete 100 minutes of writing every ten days.He writes for 10 minutes each day. What fraction of his writing requ
3241004551 [841]

Answer:

Bryce has complete \frac12 of his writing requirements.

Step-by-step explanation:

Given:

Number of minutes of writing to be completed in 10 days = 100\ mins

Number of minutes he writes in each day = 10 mins

We need to find the fraction of writing requirements Bryce has completed in 5 days.

Solution:

1 day = 10 mins

5 day = Number of minutes he writes in 5 days.

Using Unitary method we get;

Number of minutes he writes in 5 days = 10\times 5 =50\ mins

Now we can say that;

to find the fraction of writing requirements Bryce has completed in 5 days we will divide Number of minutes he writes in 5 days divided by Number of minutes of writing to be completed in 10 days.

framing in equation form we get;

fraction of writing requirements Bryce has completed in 5 days = \frac{50}{100}=\frac12

Hence Bryce has complete \frac12 of his writing requirements.

3 0
4 years ago
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