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qaws [65]
3 years ago
13

"Question": Expand (2x-3y)^3 Real question: Why am I not ace rank yet?

Mathematics
2 answers:
Hitman42 [59]3 years ago
5 0

Answer: (6x-3y)3 or maybe not possible to do

Step-by-step explanation

multiply 3x2 and get 6. Multiply 3x3 and get 9.

Vladimir [108]3 years ago
4 0

Answer:

We use the above identity: (a+b) 3 =a 3 +3a 2 b+3ab 2 +b 3 . Take a=2x and b=3y and we get

(2x+3y) =(2x) 3 +3(2x) 2 (3y)+3(2x)(3y) 2 +(3y) 3 =8x 3 +36x 2 y+54xy 2+27y 3

Step-by-step explanation:

You might be interested in
A college bookstore charges $60 for a yearly membership. The first book is free with membership and any book after that costs $7
brilliants [131]

Answer:

The equation representing Total money spend being as a member is m = 60+7.6(b-1)

Step-by-step explanation:

Given:

Memberships charges = $60

Cost of 1 book = $7.60

Let number of books be 'b'.

We need to find Total money 'm' spend yearly on buying books after becoming member.

Now we know that 1 book is free for a member.

Total money spend 'm' will be equal to Sum Memberships charges  and Cost of 1 book multiplied by number of books bought yearly minus 1.

Framing in equation form we get;

m = 60+7.6(b-1)

Hence The equation representing Total money spend being as a member is m = 60+7.6(b-1)

5 0
3 years ago
The angle looking up at the sun is 70°. A flagpole casts a shadow of 15 ft. Draw a diagram and find the height of the flagpole
deff fn [24]

Answer:

The length of the flagpole be 41.2 ft .

Option (A) is correct .

Step-by-step explanation:

As given

The angle looking up at the sun is 70°.

A flagpole casts a shadow of 15 ft .

Now by using the trignometric identity .

tan \theta = \frac{Perpendicular}{Base}

\ theta = 70^{\circ}

tan\ 70^{\circ} = \frac{AB}{BC}

BC = 15 ft

tan 70° = 2.75 (Approx)

2.75 = \frac{AB}{15}

AB = 2.75 × 15

     = 41.2 ft

Therefore the length of the flagpole be 41.2 ft .

Option (A) is correct .

4 0
3 years ago
Read 2 more answers
Help plz..And No links!! I repeat No links!!
ser-zykov [4K]

Answer:

4m

Step-by-step explanation:

shapes are similar.

purple shape is double the red and 2x2 is four

so the answer is 4m

7 0
3 years ago
Read 2 more answers
18tons 42 pounds divided by 3 = ____tons ____pounds
Otrada [13]

18 tons and 42 pounds divided by 3=6 tons and 14 pounds


5 0
3 years ago
I need to help with that
Bingel [31]
The ratio of people that can be served to milligrams of baking soda needed is:

Serving : Baking Soda
2 : 1600mg

Since you want 10 people, you can multiply this ratio by 5:5 to get 

10 people served = 8000mg needed

8000mg = 8 grams
3 0
4 years ago
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