3 years ago

Simplify 2x^2y+xy+5y^2-7x^2+4y^2

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

6 0

Answer:

2x^2y+9y^2-7x^2

Step-by-step explanation:

Just combine like terms.

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2) 2(8r + 5) = 24 + 9r

Anna35 [415]

Answer:

r = 2

Step-by-step explanation:

2(8r + 5) = 24 + 9r

16r + 10 = 24 + 9r

16r - 9r = 24 - 10

7r = 14

r = 2

4 0

3 years ago

Round this number to the nearest tenth 4.9675

MatroZZZ [7]

Add half a tenth.
.. 4.9675 +0.05 = 5.0175
Throw away all the digits to the right of the tenths digit.
.. 5.0

Your rounded number is 5.0

8 0

3 years ago

What is the prime factor of 12

cluponka [151]

Answer:

3, 2, 2

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Find k given that these three points are collinear.<br> A(0, -2), B(2, 0), and C(5, k)

goldfiish [28.3K]

Answer:

k = 3.

Step-by-step explanation:

If they are collinear the slope of AB = the slope of BC, so :-

(0- (-2)) / (2 - 0) = (k - 0) / (5 - 2)

2/2 = k/3

1 = k/3

k = 3.

7 0

3 years ago

Question - Find each f(c) using synthetic substitution. f(x) =5x 5 + 10x 4 + 3x 3 + 8x 2 – 6x – 3; c = 3

SpyIntel [72]

Answer:

2157

Step-by-step explanation:

The given function is

$f(x)=5x^5+10x^4+3x^3+8x^2-6x-3$

We want to find f(c) when c=3.

This means the remainder when f(x) is divided by x-3

We perform the synthetic division:

5 10 3 8 -6 -3

5 25 78 242 720 2157

Therefore the remainder is 2157

You are right

7 0

3 years ago