2 years ago

Multiply polynomials (x+4)(x+5)

Mathematics

1 answer:

zhannawk [14.2K]2 years ago

3 0

Answer:

$x^{2} +9x+20$

Step-by-step explanation:

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Find the value of 373 using the identity (x − y)3 = x3 − 3x2y + 3xy2 − y3. Show all work.

Paladinen [302]

Answer:

$37^3 = 50653$

Step-by-step explanation:

Given

$(x - y)^3 = x^3 - 3x^2y + 3xy^2 - y^3$

Required

Find $37^3$

Express 37 as 40 - 3

So, we have:

$37^3 = (40 - 3)^3$

Compare to $(x -y)^3$

$x = 40\ and\ y = 3$

Substitute 40 for x and 3 for y in $(x - y)^3 = x^3 - 3x^2y + 3xy^2 - y^3$

$(40 - 3)^3 = 40^3 - 3*40^2*3 + 3*40*3^2 - 3^3$

Evaluate all exponents

$(40 - 3)^3 = 64000 - 3*1600*3 + 3*40*9 - 27$

Evaluate all products

$(40 - 3)^3 = 64000 - 14400 + 1080 - 27$

$(40 - 3)^3 = 50653$

Hence:

$37^3 = 50653$

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2 years ago

Two boats start their journey from the same point A and travel along directions AC and AD, as shown below:

salantis [7]

Hope this will help

Mark as brainliest plzzzzzzzzz

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3 years ago

What is 2p6−19=−9 I need help pls I don't understand this at all

Aleonysh [2.5K]

Answer:

5/6. Is this what u are looking for?

Step-by-step explanation:

Step 1 Simplify:2x(6)-19=-9 to 12x+-19=-9

Step 2 Add 19 to both sides: 12x-19+19=-9+19. You should get 12x=20

Step 3 Divide 12 on both sides: 12x/12=10/12

x=10/12. Simplified= x=5/6

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2 years ago

The waiter makes $10 per hour plus $65 in tips. He wants to earn AT LEAST $150. How many hours should he work?

Maksim231197 [3]

150 - 65 = 85. 85 divided by 10 is 8.5 hours.

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2 years ago

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In a class of 30 students, 6 have a brother and 12 have a sister. There are 14 students who do not have any siblings. What is th

NeTakaya

Answer:

32 siblings from the class theres a possibility that some students had more siblings and not everyone has one

Step-by-step explanation:

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2 years ago