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natita [175]
3 years ago
8

Factorise : 64a cube minus 27b cube minus 144a square b plus 108ab square ​ .

Mathematics
1 answer:
Ad libitum [116K]3 years ago
8 0

Answer:

<h2>The answer is 4a(16a^2+27b^2)-3b(9b^2+48b)</h2>

Step-by-step explanation:

step one:

let us re-write the expression in mathematical terms for clarity

we have the expression stated  below

64a^3-27b^3-144b^2+108ab^2    

step two:

We are going to collect like terms before factorization we have

    64a^3+108ab^2-27b^3-144b^2

We can now factorize the expression we have  

4a(16a^2+27b^2)-3b(9b^2+48b)

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Lelechka [254]

The answer is D none of the above

7 0
3 years ago
Read 2 more answers
The store has put up a robotics kit on sale for 25% off the original price of $250, AND you have a coupon for an additional 20%
Ganezh [65]

A. If you use only the coupon you will have to pay $137.50.

B. Using the Coupon during the sale, the kit is discounted by $112.50

C. The total percent discount is 45% after both discounts.

Step-by-step explanation:

Step 1; The store has the robotics kit for a sale of 25% off $250. So we need to find how much 25% is in terms of $250. To do that we convert 25% into a fraction by dividing it by 100 and multiplying it with $250.

25% of  $250 = \frac{25}{100} × $250 = 0.25 × $250 = $62.50

So we find the cost of the kit due to the store's discount. To do that we subtract the discounted price from the original price.

Robotics kit price after 25% discount = $250 - $62.50 = $187.50.

Step 2; A coupon you have gives you an additional 20% discount. So the robotics kit can be brought for 25% off due to the sale at the store, due to this coupon you get an additional 20%. So you get a 45% discount off $250.

45% of  $250 = \frac{45}{100} × $250 = 0.45 × $250 = $112.50.

So to find the total discount we subtract this $112.50 from the non-discounted cost of $250.

Total discounted price = $250 - $112.50 = $137.50.

6 0
3 years ago
Someone help me plzzz. Quickkkkkk
Nuetrik [128]

Answer:

They can make 5 posters.

8 0
3 years ago
What is the answer to x/3-2=7
Firlakuza [10]
<span> x/3-2=7
---------------------
SImplify
1/3x - 2 = 7
--------------------------
add 2 to each side
1/3x - </span><span><span>2 </span>+ 2 </span>= <span>7 + <span>2
1/3x = 9
------------------------------
Multiply each side by 3
3 * (1/3x) =  3 * 9
x = 27</span></span>
3 0
3 years ago
What is the length of the y-component of the vector shown below?
GREYUIT [131]

Answer:

A

Step-by-step explanation:

y component=17 sin 81≈16.7907≈16.8

5 0
3 years ago
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