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viva [34]
3 years ago
8

Will mark brainliest :) Given vectors u = -9i + 8j and v = 7i + 5j find 2u -6j in terms of unit vectors i and j

Mathematics
2 answers:
Jet001 [13]3 years ago
8 0

Answer:

the answer is option number b..

a_sh-v [17]3 years ago
4 0

Answer:

b.

Step-by-step explanation:

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Malia tried to prove that cos(0) =sin(90°-0) using the following diagram. her proof is not correct
larisa86 [58]

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Can you show a picture of the diagram?

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kevin has $42 and is saving $8 per week. how many weeks must kevin save in order to have 138 altogether
Elden [556K]

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Step-by-step explanation:

6 0
3 years ago
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Question 12 (1 point) Given P(A) 0.34, P(A and B) 0.27, P(A or B) 0.44, what is P(B)? Answer in decimal form. Round to 2 decimal
Tema [17]

Answer:  The required probability of event B is P(B) = 0.37.

Step-by-step explanation:  For two events A and B, we are given the following probabilities :

P(A) = 0.34,    P(A ∩ B) = 0.27   and   P(A ∪ B) = 0.44.

We are to find the probability of event B, P(B) = ?

From the laws of probability, we have

P(A\cup B)=P(A)+P(B)-P(A\cap B)\\\\\Rightarrow 0.44=0.34+P(B)-0.27\\\\\Rightarrow 0.44=0.07+P(B)\\\\\Rightarrow P(B)=0.44-0.07\\\\\Rightarrow P(B)=0.37.

Thus, the required probability of event B is P(B) = 0.37.

6 0
3 years ago
Suppose a triangle has two sides of length 3 and 4 and that the angle
Ira Lisetskai [31]

Answer:

B

explanation:

I am sorry that I am not sure how to expalin but this is the correct answer.

7 0
2 years ago
The mean height of 10 girls is 154cm. The mean height of 8 boys is 162cm. What is the mean height of the class?
olganol [36]

Answer:

158cm

Step-by-step explanation:

154+162=316

316/2=158

8 0
3 years ago
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