If vector AB = i+7j-2k and B is point (7,4,4). Find A.

Answers

Answer 1

Answer:

A is point ( 6, -3, 6)

Step-by-step explanation:

Here in this question, we are concerned with finding the coordinates of point A.

Since we do not know the coordinates of point A, let’s represent them as (x,y,z)

By vector properties; Mathematically ;

AB = (7,4,4) - (x , y, z)

Thus; AB = (7-x)i + (4-y)j + (4-z)k

From the question, we are told that AB is also i + 7j -2k

By comparison;

(7-x)i = i

7-x = 1

x = 7-1

x = 6

(4-y)j = 7j

4-y = 7

4-7 = y

y = -3

and lastly

(4-z)k = -2k

4-z = -2

4 + 2 = z

z = 6

So the coordinates of A are (6, -3, 6)


Related Questions

Complete the pattern 0.095 9.5 950 95,000 9,500

Answers

Answer:

the next number is 9,500,000 each time you multiply the number by 100

Step-by-step explanation:

0.095×100=9.5

9.5×100=950

and so on good luck

PLSSSS HELPP ASSPPPP!!!!

Answers

the rate of change is 1.5

The freezing temperature of the water is 32 degrees Fahrenheit and the boiling temperature of water is 212 degrees Fahrenheit. Write an absolute value equation that represents the minimum and maximum temperature of liquid water. Use X to represent the temperature.

Answers

Answer:

90 = | x - 122 |

Step-by-step explanation:

Given;

maximum temperature, 212 °F

minimum temperature, 32 °F

First, determine the difference of both values;

212 - 32 = 180

Divide this value by 2

180/2 = 90

90 = | x - 212 + 90|

90 = | x - 122 |

where;

x is the temperature of water

Thus, the absolute value equation that represents the minimum and maximum temperature of liquid water is 90 = | x - 122 |

187/100 in simplest form. (ex 10/5 = 1 1/5)

Answers

Answer:

It stays the same

numerele a, b si c sunt direct proportionale cu 2, 3 si 5. Daca media aritmetica a celor trei numere este egala cu 100, determinati numerele a, b si c

Answers

Answer:

a = 60

b = 90

c = 150

Step-by-step explanation:

Numerele a, b și c sunt direct proporționale cu 2, 3 și 5.

Unde k este constantă de proporționalitate

a ∝ 2

a = 2k

b ∝ 3

b = 3k

c ∝ 5

c = 5k

Dacă media aritmetică a celor trei numere este egală cu 100, determinați numerele a, b și c

= 2k + 3k + 5k / 3 = 100

= 10k / 3 = 100

Cross Multiply

= 10k = 3 × 100

= 10k = 300

Împărțiți ambele părți la 10

k = 300/10

k = 30

Pentru numărul a

a = 2k

a = 2 × 30

a = 60

Pentru numărul b

b = 3k

b = 3 × 30

b = 90

Pentru numărul c

c = 5k

c = 5 × 30

c = 150

Prin urmare, a = 60, b = 90, c = 150

Kanji buys 3 yards of fabric for $7.47. Then he realizes that he needs 2 more yards Of the Same fabric. How much will the extra fabric cost?

Answers

It will cost 4.98.
Explanation: If you divide 7.47 by 3, you get 2.49. One yard plus one yard equals two yards. Multiply 2.49 by 2 to get the answer.

ALGEBRA 1 BRIDGING DIAGNOSTIC I SECTION 1 1 1 OF 10
The number of bottles a machine fills is proportional to the number of minutes the machine operates. The
machine fills 250 bottles every 20 minutes. Create a graph that shows the number of bottles, y, the
machine fills in x minutes
А A

Answers

Answer:

The answer is below

Step-by-step explanation:

Let the number of bottles be y and the number of minutes the machine operate be x.

Given that number of bottles be is proportional to the number of minutes the machine operate, hence:

y is proportional to x.

⇒ y α x

y = kx, where k is a constant

when the number of bottles (y) = 250, the time the machine operates (x) = 20 minute. Therefore:

y = kx

250 = 20k

k = 250/20

k = 12.5

Hence the relationship between x and y is given as:

y = 12.5x

Plotting the function y = 12.5x using geogebra

What is the solution to x6 – 6x 5 + 15x 4 – 20x 3 + 15x 2 – 6x + 1 ≥ 0?

Answers

Answer: C all real numbers

Step-by-step explanation:

I got the answer right on Edge


1 point
What type of number is -0.36? Check ALL that apply.
whole number
irrational
integer
rational

Answers

Answer:

Its an integer and rational number

passing through (-6, -1) and parallel 2x+3y=3

Answers

Answer:

the answer is -5

Step-by-step explanation:

Answer:

y=-2/3x+5

Step-by-step explanation:

2x+3y=3

3y=-2x+3

y=-2/3x+1

*input the point given)

-1=-2/3(-6)+1

5

hope this helped!!

The temperature was 61 degrees at sunrise.
By 2:00 PM, the temperature had risen
by 12 degrees. Find the temperature at
2:00 PM

Answers

The answer would be 73 degrees because 62 +12 = 73

The temperature at 2:00 PM will be 73 degrees

What is temperature ?

Coldness and hotness is measured by temperature which is one of the fundamental units of measurements.

Here, it is given that the temperature at sunrise was 61 degrees and it is find the temperature at 2 P.M which as increase by 12 degrees. Now calculating it by adding 61 degree with 12 degrees :

the temperature at 2:00 PM = 61 degrees + 12 degrees = 73 degrees

Read more about addition at:

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A picture is photocopied by using a scale factor of 2. Each side of the photocopy of the picture is

Answers

Answer:

enlarged by a factor of 2

Step-by-step explanation:

you're welcome

what is -10+10(-12)÷6

Answers

Answer:

-30

Step-by-step explanation:

t-(-5) = 9
what’s the first step to solve the equation?

Answers

Answer:

Subtract 5 from each side  

( or add -5 to each side)

Step-by-step explanation:

t-(-5) = 9

t+5 = 9

Subtract 5 from each side

t +5-5 = 9-5

t = 4

Solve the equation.
0.95x +0.05(12-x) = 0.10(24)

Answers

Answer:

x=2

Step-by-step explanation:

0.95x +0.05(12-x) = 0.10(24)

Distribute

0.95x +0.6-0.5x= 2.4

add/subtract like terms

0.9x+0.6=2.4

subtract 0.6 from both sides

0.9x=1.8

Divide both sides by 9

0.1x=0.2

multiply both sides by 10

x=2

Hope this helps! Plz award Brainliest : )

A 2010 study asserts that the number of hours that the average college student studies each week has been steadily dropping (The Boston Globe, July 4, 2010). In fact, the researchers state that, in the U.S., today’s undergraduates study an average of 14 hours per week. Suppose an administrator at a local university wants to show that the average study time of students at his university differs from the national average. He takes a random sample of 35 students at is university and finds that the average number of hours spent studying per week is 16.7. Assume that the population standard deviation is 7.2 hours. At 0.05 level of significance, what is the test statistics for testing the hypotheses H0: µ = 14 versus H1: µ ≠ 14?

Answers

Answer:

Test statistic    |Z| = |-2.21|

calculated value Z = 2.21 > 1.96 at 0.05 level of significance

Null hypothesis is rejected

The researchers state that, in the U.S., today’s undergraduates not study an average of 14 hours per week

Step-by-step explanation:

Step(i):-

Given Mean of the Population' μ' = 14 hours per week

Given random sample size 'n'= 35

Mean of the sample (x⁻) = 16.7 hours per week

standard deviation of the Population (σ) = 7.2 hours per week

Level of significance = 0.05

Step(ii):-

Null hypotheses :H₁: µ = 14

Alternative Hypothesis : H₂: µ ≠ 14

Test statistic

              [tex]Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }[/tex]

              [tex]Z = \frac{14-16.7}{\frac{7.2}{\sqrt{35} } }[/tex]

               Z = -2.21

            |Z| = |-2.21|

The tabulated value

                    Z₀.₀₅ = 1.96

calculated value Z = 2.21 > 1.96 at 0.05 level of significance

 Null hypothesis is rejected

The researchers state that, in the U.S., today’s undergraduates not study an average of 14 hours per week

Chicken is on sale 5 pounds for $14.40 if I paid the unit cost what would three pounds of chicken cost? PLEASE HELP FAST

Answers

8.64 would be the answer

Can some one help me please

Answers

Answer:

Acc to the exponential rule

{[A^m]} ^2

A ^m*n

Hence A raise to 3 whole raise to 2 is equal to

A raise to 3*2=6

That is A raise to 6

Alden has a gift card for a local garden store. She uses the gift card to rent a tiller for 5 days. It cost $59 per day to rent the tiller. She also buys a rake for $3 l. By how much did her gift card decrease by

Answers

Answer:

90 the answer is 90

Answer:

$250

Step-by-step explanation:

We can make a pretty simple equation to help us solve this. If the tiller costs $59 for each day and she uses it for 5 days, the first step of our equation would be (59 x 5). Then she buys a rake for 3 dollars, that is adding to the equation

(59 x 5) + 3

Fist solve what is inside the parentheses. 59 x 5 = 250

250 + 3 = 250

A rectangle has the length 8 times the width the area of the park is 392 square unites how much is the width of the park

Answers

Answer:

7

Step-by-step explanation:

A rectangle has a length that is 8 times the width

The area of the park is 392 square units

Let y represent the width of the park

Since the length is 8 times the width then, l= 8x

Therefore the width of the park can be calculated as follows

8x × x= 392

8x^2= 392

x^2= 392/8

x^2= 49

x= 7

Hence the width of the park is 7

About 4/5 of all the orange juice in the world is produced in Brazil. About what percent of all the orange juice in the world is produced in Brazil?

Answers

Answer:

80%

Step-by-step explanation:

We first have to make this fraction into a percent

4/5 is equal to 80/100

80/100 is the same as 80% out of 100 so...

the answer is 80%

#3. Which related conditional statements have the same truth value as

the contrapositive? *

O Conditional Statement

Biconditional

Converse

Inverse

Answers

Answer:

Conditional Statement

Step-by-step explanation:

Here in this question, we are interested in selecting which of the options given has the same truth value as the contrapositive. The correct answer here is the conditional statement.

Logically, a contrapositive statement has the same truth value as a conditional statement. What this means is that they are logically equivalent.

A conditional statement is however not logically equivalent to its converse and inverse.

Suppose tan(x) = Two-thirds, and the terminal side of x is located in quadrant I. What is sin(x)?

Answers

Answer:

sin(x) = 2/√13

Step-by-step explanation:

In the first quadrant , all the trig identity (sin, cos and tan) are all positive.

Given tan(x) = 2/3

According to TOA, tan(x) = opposite/adjacent = 2/3

opposite = 2

adjacent = 3

Using pythagoras theorem to get the hypotenuse;

Hyp² = opp²+adj²

Hyp² = 2²+3²

Hyp² = 4+9

Hyp² = 13

Hyp = √13

According to SOH, sin(x) = opp/hyp

sin(x) = 2/√13

What is the value of the correlation coefficient r of the data set?

Answers

Answer:

C

Step-by-step explanation:

GPA
1.73
3.08
3.39
3.7
3.52
3.28
2.87
1.86
2.73
1.93
2.15
1.55
2.24
1.63
3.26

Answers

Answer:

about 3.52..........


Your friend says that the solutions to the inequality 8x - 15x s 14 are xs - 2. Solve the inequality correctly. What error did your
friend make?

Answers

I don’t get the question well

pls answer fast (3/7 ÷ 1/2) ÷7/8​

Answers

Answer:

48/49

Step-by-step explanation:

jv

Answer:

Step-by-step explanation:

48/49

Which relation is a function? A. (8, –4), (8, 4), (6, –3), (6, 3), (0, 0) B. (4, 7), (8, 5), (6, 4), (5, 3), (4, 2) C. (0, 0), (1, 1), (2, 2), (3, 3), (4, 7) D. (0, 0), (1, 0), (1, 1), (2, 1), (1, 2)

Answers

Answer:

its C because in C none of the x's repeat

Step-by-step explanation:

ASAP A cylinder has a base with a diameter of 6 cm, and a height of 12 cm. What is its volume? ASAP

Answers

Answer:

V= 339.336 cubic cm i'm pretty sure :)

Step-by-step explanation:

A person whose salary is Rupees 18500 has to pay 13% tax how much tax should he pay ​

Answers

Step-by-step explanation:

if a person whose salary is Rs 18500 has to pay 13% tax pay 18500 into 13 by hundreds equals to 185 into 13

The amount of tax the person has to pay is Rupees  2405.

What is the percentage?

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

Given, A person whose salary is Rupees 18500 has to pay 13% tax.

So, The amount of tax he has to pay is 13% of 18500.

(13/100)×18500.

= 13×185.

= 2405 Rupees

learn more about percentages here :

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