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2 years ago

(−8p ^3 +9p ^2q −5pq ^2) + (8p ^3 − pq + 5q ^2)

Mathematics

1 answer:

wariber [46]2 years ago

6 0

Answer:

9p^2q-5pq^2-pq+5q^2

Step-by-step explanation:

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6. Ava had a rough day on the stock market. Her stocks dropped in value to

Pani-rosa [81]

Answer:

420,000

Step-by-step explanation:

If 140,000 is $\frac{1}{3}$ of what she had yesterday, then you just multiply the number by 3 because $\frac{1}{3}$ times 3 is $\frac{3}{3}$ , which is 1.

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2 years ago

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There is an animal farm where chickens and cows live. All together, there are 84 heads and 210 legs. How many chickens and cows

Ira Lisetskai [31]

1 Chicken have = 2 legs

1 Cow have = 4 legs

No of cows = x

No of chickens = y

Total no of legs = 4x + 2y = 210.............(1)

Total No of heads = x + y = 84................(2)

x = 84 - y....( from (2) )

Substituting the above equation in (1)

4 ( 84 - y) + 2y = 210

336 - 4y + 2y = 210

336 - 2y = 210

-2y = -126

= y = 63

No of cows = 84-63 = 21

∴ Total no of cows = 21

Total no of chickens = 63

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2 years ago

Total of 49 1/4 + 3 3/8?

Irina18 [472]

49 1/4 + 3 3/8 = 52 5/8

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3 years ago

Which graph shows the system of equations {2x+3y=5 4x−5y=−1

Reika [66]

Answer:

The first one

Step-by-step explanation:

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3 years ago

Simplify the trigonometric expression sin(4x)+2 sin(2x) using Double-Angle

drek231 [11]

Answer:

${ \bf{ = \sin(4x) + 2 \sin(2x) }} \\ = { \bf{2 \sin(2x) \cos(2x) + 4 \sin(x) \cos(x) }} \\ { \bf{ = 4 \sin(x) \cos(x) . ({ \cos }^{2} x - { \sin}^{2} }x) + 4 \sin(x) \cos(x) } \\ = { \bf{4 \sin(x) \cos(x) ( { \cos }^{2}x - { \sin }^{2}x + 1) }} \\ = { \bf{4 \sin(x) \cos(x) }(2 { \cos }^{2} x)} \\ = { \bf{8 \sin(x) { \cos}^{3}x }}$

8 0

2 years ago