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zubka84 [21]
3 years ago
15

4.3 Multiplying Binomials Question

Mathematics
2 answers:
Natasha_Volkova [10]3 years ago
7 0
6x2 - 1, 2 is an exponent not sure if im right havent done math in a long time
Schach [20]3 years ago
5 0
I think the answer to that is : 6x^2 - 41x - 56
But I’m not a 100% sure
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Find the cosine of angle B.
Alexandra [31]

\boxed { \text {Cosine Rule : } a^2 = b^2 + c^2 - 2bc \cos(A) }

-

9² = 12² + 15² - 2 (12) (15) cos (B)

81 = 144 + 225 - 360 cos(B)

81 = 369 - 360 cos (B)

360 cos (B) = 369 - 81

360 cos (B) = 288

cos (B) = 0.8

-

Answer: Cosine B = 0.8

-

\boxed { \text {Cosine Rule : } a^2 = b^2 + c^2 - 2bc \cos(A) }

-

12² = 15² + 9² - 2 (15)(9) cos (A)

144 = 225 + 81 - 270 Cos A

144 = 306 - 270 Cos A

270 Cos A = 162

Cos A = 3/5 or 0.6

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Answer: Cosine Angle A = 3/5

4 0
3 years ago
What is -2.6c - 2.8c equal??
Zina [86]

Answer:

-5.4c

Step-by-step explanation:

We're combining two "like" terms here.

It may make the problem easier to visualize if we write one of these terms over the other, as follows:

-2.6c

- 2.8c

----------

Adding, we get:

-2.6c

- 2.8c

----------

- 5.4c (answer)

3 0
3 years ago
Rick has 1/2 of a footlong sub left from yesterday. He ate 1/3 of the leftover sandwich as a snack. What fraction of the entire
Lelechka [254]
The answer is 1/6 of the sandwich
8 0
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2/6 +36 Whats the answer ?​
777dan777 [17]

36 2/6

do I have to explain???

4 0
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Database about trees include a height field. What kind of sort would list the data from tallest to shortest?
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