1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Karolina [17]
3 years ago
13

Can someone please help me out with this question? I need an answer ASAP. Thank you!!!

Mathematics
2 answers:
LekaFEV [45]3 years ago
5 0
<h2>Answer:</h2>

The resultant of the dot product of two vectors is:

                     v\cdot w=22

<h2>Step-by-step explanation:</h2>

We are asked to find the dot product of the two vectors v and w.

The vectors are given by:

r = <8, 8, -6>; v = <3, -8, -3>; w = <-4, -2, -6>

This means that  in the vector form they could be written as follows:

r=8\hat i+8\hat j -6\hat k\\\\v=3\hat i-8\hat j -3\hat k\\\\w=-4\hat i-2\hat j -6\hat k

Hence, the dot product of two vectors is the sum of the product of the entries corresponding to each direction component.

i.e. the x-component get multiplied to each other, y-component get multiplied to each other and so happens with z.

Hence, the dot product of v and w is calculated as:

v\cdot w=3\times (-4)-8\times (-2)-3\times (-6)\\\\i.e.\\\\v\cdot w=-12+16+18\\\\i.e.\\\\v\cdot w=22

FinnZ [79.3K]3 years ago
4 0

Multiply corresponding components, then add the products:

v\cdot w=3(-4)+(-8)(-2)+(-3)(-6)=22

You might be interested in
What is the center of a circle whose equation is x2 y2 – 12x – 2y 12 = 0? (–12, –2) (–6, –1) (6, 1) (12, 2)
lora16 [44]

The center of a circle whose equation is x^2 +y^2 – 12x – 2y  +12 = 0 is (6,1)

<h3>Equation of a circle</h3>

The standard equation of a circle is expressed as:

x^2 + y^2 + 2gx + 2fy + c = 0

where:

(-g, -f) is the centre of the circle

Given the equations

x^2 +y^2 – 12x – 2y  +12 = 0

Compare

2gx = -12x

g = -6

Simiarly

-2y = 2fy

f = -1

Centre = (6, 1)

Hence the  center of a circle whose equation is x^2 +y^2 – 12x – 2y  +12 = 0 is (6,1)

Learn more on equation of a circle here: brainly.com/question/1506955

8 0
2 years ago
You're conducting a significance test for H0 : p = .35, Ha : p &lt; .35. In a sample of size 40, you identify a count of 11 succ
nordsb [41]

Answer: c. –1 and .1587

Step-by-step explanation:

As per given , we have

Null hypothesis : H_0 : p= 0.35

Alternative hypothesis :  H_1 : p< 0.35

Since Alternative hypothesis is left-tailed ,so the test must be a left tailed test .

Z -Test statistic for proportion = z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

, where p= population proportion

\hat{p} = sample proportions

n= Sample size.

Let x be the number of successes.

For n= 40 and x= 11

\hat{p}=\dfrac{x}{n}=\dfrac{11}{40}=0.275

Then ,  z=\dfrac{0.275-0.35}{\sqrt{\dfrac{0.35(1-0.35)}{40}}}

z=\dfrac{-0.075}{\sqrt{0.0056875}}

z=\dfrac{-0.075}{0.075415515645}

z=-0.99449031619\approx-1

By using z-table ,

P-value for left-tailed test = P(z<-1)= 1-P(z<1)    [∵ P(Z<-z)= 1-P(Z<z) ]

= 1-0.8413

=0.1587

Hence, the -score and P-value are  <u>–1 and 0.1587</u> .

So the correct option is c. –1 and .1587

8 0
3 years ago
Help will give Brainly points
Nesterboy [21]
No they are not… not the same size
3 0
3 years ago
Select the correct numerator 7/9 - ?/27
damaskus [11]

Answer:

21

Step-by-step explanation:

27÷3 is 9 and 21÷3 is 7

7 0
3 years ago
Simplify- 5+2{3x+7(2-x)}
oksano4ka [1.4K]

Answer:

16x+19

Step-by-step explanation:

i might be wrong and its gonna take so long to explain it

4 0
3 years ago
Other questions:
  • darnells's car used 8 gallons of gasoline to travel 340 miles.After a mechanic worked on the car it used 7 gallons of gasoline t
    7·1 answer
  • Help pls I need it <br>I will give brainiest ​
    9·1 answer
  • Add parentheses to solve the equation 16+3*4-2+5=21
    5·1 answer
  • What is the equation of a line that passes thorough the point (9,-3) and is parallel yo the line whose equation is 2x-3y=6?
    13·2 answers
  • Omar has a new credit card. He earns 300 reward points for every 100 dollars he spends. If Omar earned 1800 reward points, how m
    9·2 answers
  • Help pls and thank youuuu to whoever helps me !!!!!!
    15·1 answer
  • What answer do you get when you solve 0.4(2a-0.3b)
    12·1 answer
  • Help please <br>........​
    7·1 answer
  • How many four-letter codes can be made if no letter can be used twice?
    11·2 answers
  • A soccer team’s performance in a game depends on its performance in the last two games. If the team has lost both its previous g
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!