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3 years ago

If vector u = <-3.5, -1.5> and vector v = <-1.25, 2.25>, which graph shows the resulting vector for 2v − u?

Mathematics

1 answer:

Sedaia [141]3 years ago

8 0

Answer:

Step-by-step explanation:

We know that vector addition is scalar addition.

Given vectors are u = <-3.5, -1.5> and v = <-1.25, 2.25>

2v = < -2.5, 4.5>

2v - u = < -2.5, 4.5> - <-3.5, -1.5> = < -2.5 - (-3.5) , 4.5 -(-1.5) >

2v-u = < 1 , 6 >

This vector is basically i + 6j which is drawn in option D

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the pencil and the laptop computer are both tools that help writers accomplish their tasks. Follow the clues below to find the y

BartSMP [9]

What you do is divide the sum by 2. You will come out with and answer of 1891. Now, to figure out the years they were invented you take the difference of 192 and divide that in half also. It will come out to 96. Now, you subtract 1891 by 96 and that is the year the pencil was invented (1795=pencil) now with the other half (1891) you add on 96 and you’ll come out with the answer of 1987.

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Hope this helped!

5 0

3 years ago

Select the correct answer.

oksano4ka [1.4K]

Answer: $\dfrac{1}{3}$

Step-by-step explanation:

Favorable outcomes (sum is a multiple of 3): (1,2) , (1, 5), (1,8), (2,1) , (2,4), (2,7) , (3, 3), (3, 6), (4, 2), (4, 5) , (4, 8), (5,1), (5, 4), (5, 7), (6,3), (6, 6).

Number of favorable outcomes (sum is a multiple of 3): 16

Total outcomes = Total outcomes of 6-sided die x Total outcomes of 8-sided die=6 × 8 = 48

Then , the probability of getting numbers whose sum is a multiple of 3:

$=\dfrac{\text{favorable outcomes}}{\text{total outcomes}}\\\\=\dfrac{16}{48}=\dfrac{1}{3}$

Hence, the required probability = $\dfrac{1}{3}$

7 0

3 years ago

A teacher gives a test in which the average of the test scores is 68 and the standard deviation is 14. Realizing that the test w

Alika [10]

Answer:

Mean = 78 ;

Standard deviation = 14

Step-by-step explanation:

Given that:

Mean score = 68

Standard deviation = 14

When a constant value is added to the individual value of a dataset, the new mean value will become the sum of the initial mean value and the constant term added to the values.

Constant Added score = 10

The mean of scaled test score will be:

Mean score + constant added score

68 + 10 = 78

The standard deviation remains unchanged ; Hence, standard deviation = 14

6 0

3 years ago

Y = 2x + 6<br> 2y = 4x + 12<br> are they one solution

pogonyaev

Answer:

6 + 2x

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is 6.78 and 8.21 rounded to tenth nearest tenth

yaroslaw [1]

Here is your answer:

6.78 rounded to the nearest tenth = 7.00 because the 7 in 6.78 is greater then five.

8.21 rounded to the nearest tenth= 8.00 because the 2 in 8.21 is NOT greater than five.

4 0

3 years ago

Read 2 more answers