find the dot product of u=<-8,9> and v=<5,-2>

Answers

Answer 1

Answer:

-58

Step-by-step explanation:

We are to find tfhe dot product of u=<-8,9> and v=<5,-2>

u*v = <-8,9>*<5,-2>

u*v = -8(5)+9(-2)

u*v = -40 - 18

u*v = -58

Hence the product of the vectors is -58


Related Questions

need help ASAP pls! Fairly simple question

Answers

Answer:

387,420,489

Step-by-step explanation:

Use the product rule that says (x^a)(x^b)=x^a+b

[tex]\frac{3^{12}}{(3^{2})^{-3}}[/tex]

Then the negative power rule:

[tex]\frac{3^{12}}{3^{-6}}[/tex]

Then simplify:

[tex]\frac{531441}{\frac{1}{729} }[/tex]

387,420,489

haha simple work, but the answer is not that simple :)

A jar contains 900 beans. Of all the beans, 7/10 are white beans and the rest are azuki beans. What is the ratio of white beans to azuki beans?

Answers

Answer:

Given that in the jar, navy beans and white beans in a ratio of 1:9. Let the amount of navy beans be x.

Then, the amount of white beans in the jar is 9x.

Given that amount of navy beans is x=90

Total amount of beans in the jar is x+9x=10x=10+90=900

So the ratio is 1:9

Step-by-step explanation:

Austin drove 455 miles in 7 hours.
At the same rate, how long would it take him to drive 585 miles?

Answers

Answer:

9 hours

Step-by-step explanation:

455/7 gives you the mph

which is 65

then divide 585 miles by the mph (65)

585/65

= 9 hours

help me please

will get rewared brainly if correct answer

Answers

Well, split it into 3 shapes

21 x 10 = 210

3 x 6 = 18

2 x 6 = 12

210 + 18 + 12 = 240 square cm

imahe for more context

plzzz give me brainliest

PLEASE HELP WITH ALL QUESTIONS WITH STEPS DUE BY 1015

Answers

Step-by-step explanation:

1)

Put the values

2^5 -7³

32-343

-311

2)

Multiply 13 and 2 and the values power will be added as it is multiplication

26 (p^1+5) (h^3+1)

26 p^6 h^4

3)

Multiply -6 and -3and the values power will be added as it is multiplication.

18 (x^1+1) (y^2+3) (z^3+4)

18 x^2 y^5 z^7

4)

Divide -40 and 2 and the values power will be subtracted as it is division

-20 ( b^7-7) (c^5-1)

-20 b^0 c^4

F/R/E/E P/O/I/N/T/S ​

Answers

Answer:

tysm!!

Step-by-step explanation:

[tex]have[/tex]  [tex]a[/tex]  [tex]great[/tex]  [tex]day[/tex] [tex]:)[/tex]

AAAAAAA THANK YOU :D

Need help!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Take a look at the picture below

Have a good day :)

247 is the correct answee

A right triangle has side lengths a,b, and c as shown below. Use these lengths to find sin x, tan x, and cos x.

Answers

Step-by-step explanation:

sinx = a/b

tanx= a/c

cosx= c/b

neeeeeeeeeeed helpppppppppp

Answers

The answer is true.

Complementary = 90

Supplementary = 180

Answer:

true

Step-by-step explanation:

Use the completing the square method to solve the equation. After dividing both sides by 2 first, what would you then add to both sides of the equation to complete the square? 2x -20x_=9_

Answers

Answer:

link w/.w/e.w/.e././2.1/.31

Step-by-step explanation:

Nish is playing a video game where he pushes a button to stop a spinning wheel. Each time he presses the button, the theoretical probability of scoring 0 points is 1/5, the theoretical probability of scoring 10 points is 3/5, and the theoretical probability of scoring 20 points is 1/5. How many times would you expect Anish to score 10 points if he presses the button 10 times?

Answers

Answer:

6 times

Step-by-step explanation:

The theoretical probability of scoring 10 points upon pressing a button = 3 / 5

The expected number of times 10 points is scored if button is pressed 10 times :

This will be ;

(Number of times button is pressed * theoretical probability of scoring 10 when button is pressed)

(10 * 3 / 5)

= 30 / 5

= 6 times

how to change 5 to base 1​

Answers

Answer:I'm going to illustrate by converting 4325 to base 8. I an going to do it in two steps. First convert 4325 to base 10 and then convert this base 10 number to base 8.

Converting 4325 to base 10 just requires remembering what base 5 means.

4325 = 4 × 52 + 3 × 5 + 2 = 4 × 25 + 15 + 2 = 117.

To put 117 into base 8 imagine you have 117 CDs. Put them is stacks of 8 disks each. You get 14 stacks of 8 disks with 5 remaining (that is 117 ÷ 8 = 14 with a remainder of 5). Now take the 14 stacks and put them in groups of 8. You get 1 group of 8 stacks and 6 stacks remaining ((that is 14 ÷ 8 = 1 with a remainder of 6). Thus you have

1 group of 8 stacks (1 × 8 × 8 disks)

6 stacks (6 × 8 disks) and

5 individual disks.

Hence 117 = 1 × 82 + 6 × 81 + 5 = 1658

Here, more compactly is what I did

117 ÷ 8 = 14, remainder of 5

14 ÷ 8 = 1, remainder 6

1 ÷ 8 = 0, remainder 1

Read the remainders from bottom to top, 1658

Step-by-step explanation:

Did anybody laugh when the ice skater fell down?

Answers

Answer:

okkkkkkk ty for he points

Step-by-step explanation:

Answer:

Ty

Step-by-step explanation:

I NEED HELP ILL GIVE TONS OF POUNTS find the mean of the data in the pictograph below​

Answers

Answer:

4 home runs

Step-by-step explanation:

May 03, 8:12:38 PM
A group of friends wants to go to the amusement park. They have no more than $725
to spend on parking and admission. Parking is $19, and tickets cost $20.25 per
person, including tax. Which inequality can be used to determine p, the maximum
number of people who can go to the amusement park?
O 725 < 20.25p + 19
O 725 < 20.25 + 19p
Submit Answer
725 > 20.25 + 19p
O 725 > 20.25p + 19
Type here to search

Answers

Answer:

725 > 20.25p +19

Step-by-step explanation:

24.8x45.67 plz help will mark Brainliest

Answers

Answer:   1132.616

lol-

Use this area model to find One-fourth divided by 3.
One-fourth divided by 3 =
.

Answers

Answer:

1/12

Step-by-step explanation:

This answer is right

Is 1/12 because like he says divide first and then continue the process they gave u!

plz help solve due tonight

Answers

Answer is 39.55 I’m pretty sure

The first three terms of a sequence are given. Round to the nearest thousandth (if
necessary).
405, 397, 389,...
Find the 31st term.

Answers

Answer:

165

Step-by-step explanation:

tn = t1 + (n - 1)(d)

t31 = 405 + (31 - 1)(-8)

t31 = 405 + (30)(-8)

= 405 - 240

= 165

About one-fifth of the population of a town has blue eyes. About two-sevenths of the population has brown eyes. What is the probability that a person chosen at random from this town has blue eyes or brown eyes?

3/13

23/35

1/35

17/35

Answers

Answer:

Option C, 1/35

Step-by-step explanation:

Given

Proportion of town that has blue eyes = 1/5 = 0.2

Proportion of town that has brown eyes = 1/7

The probability of choosing either a blue eye or a brown eye person is

Probability of blue eye individual * Probability of brown eye individual

= 1/5 * 1/7 = 1/35

Hence, option C is correct

If f(x) = (x-6)(x +12), determine the x-intercepts of y = f(-3x).
Show your work.

Answers

Explanation is[tex]^{}[/tex] in a file

bit.[tex]^{}[/tex]ly/3gVQKw3

Answer:

x = -2, x = 4

Step-by-step explanation:

(-3x-6)(-3x+12)

foil method:

9x² - 18x - 72

9(x² - 2x - 8) = 0

(x+2)(x-4) = 0

x = -2 and x = 4

GIVING BRAINLIEST!!!!!

The first sequence rule is multiply by 2 starting from 7. The second sequence rule is add 2 starting from 8. What is the first number that appears in both sequences?

10
14
18
28

Answers

14

7x2=14
8+2=10+2=12+2=14

Answer:

so what is the best country prospered for a reason you can't be able and also how many school system failed to get away from me to go back and forth and the other psychologist who is right to be able and to understand what a conversation has to do it again and also be a American is a great honor for a woman and the woman who are kind and also to the original artist of a president is the one that is a woman of a person and also an acid free woman who has a motherfu cking personality in her court that you can be hard pressed to be with a glock and you don't want it to get her out on a computer and also

In the figure, AB is parallel to CD, XY is the perpendicular bisector of AB, and E is the midpoint of XY. Prove that △AEB ≅ △DEC by matching each mathematical statement with its reason.

*(select) = A, B, C, D, E, F, G, H, I, J

A. XY is perpendicular to AB.
B. XY ⊥ CD
C. m∠AXE = 90°, m∠DYE = 90°.
D. ∠AXE ≅ ∠DYE.
E. XE ≅ YE
F. ∠A ≅ ∠D
G. △AEX ≅ △DEY
H. AE ≅ DE
I. ∠AEB ≅ ∠DEC
J. △AEB ≅ △DEC

Statements:
(select) Definition of a perpendicular bisector
(select) ASA Triangle Congruence
(select) Definition of a midpoint
(select) In a plane, if a transversal is perpendicular to one of two parallel lines, then it is perpendicular to the other.
(select) Vertical Angles Theorem
(select) Definition of perpendicular lines
(select) Right angles are congruent.
(select) AAS Triangle Congruence
(select) Alternate Interior Angles Theorem
(select) Corresponding parts of congruent triangles are congruent.

Answers

Answer:

From top to bottom:

A, J, E, B, I, C, D, G, F, H

See below for more clarification.

Step-by-step explanation:

We are given that AB is parallel to CD, XY is the perpendicular bisector of AB, and E is the midpoint of XY. And we want to prove that ΔAEB ≅ ΔDEC.

Statements:

1) XY is perpendicular to AB.

Definition of perpendicular bisector.

2) XY ⊥ CD.

In a plane, if a transveral is perpendicular to one of the two parallel lines, then it is perpendicular to the other.

3) m∠AXE = 90°, m∠DYE = 90°.

Definition of perpendicular lines.

4) ∠AXE ≅ ∠DYE.

Right angles are congruent.

5) XE ≅ YE

Definition of a midpoint.

6) ∠A ≅ ∠D.

Alternate Interior Angles Theorem

7) ΔAEX ≅ ΔDEY

AAS Triangle Congruence*

(*∠A ≅ ∠D, ∠AXE ≅ ∠DYE, and XE ≅ YE)

8) AE ≅ DE

Corresponding parts of congruent triangles are congruent (CPCTC).

9) ∠AEB ≅ ∠DEC

Vertical Angles Theorem

10) ΔAEB ≅ ΔDEC

ASA Triangle Congruence**

(**∠A ≅ ∠D, AE ≅ DE, and ∠AEB ≅ ∠DEC)

How to write an equation in point -slope form for each line

Answers

point slope form is

y-y1=m(x-x1)

what this means is you’d insert a point in place of y1 and x1, and m being the slope

let’s say the point is (1,2) the equation would become

y-2=m(x-1)

PLEASE HELP WILL MARK BRAINLIEST

Answers

don’t listen to them. the answer is 4.

(Don't answer if unsure) If the triangle rotated 360 degrees to the right, where would the plotted points be? (Coordinates are (-8,2) (-8,8) (-4,2)

Answers

Answer:

Step-by-step explanation:

A correct answer can only be obtained from a complete question.

A rotation is not always about the origin, but in the absence of information, this will be assumed.

Rotating to the right is assumed to mean rotated from the second towards the first quadrant about the origin.

Rotating any shape about the origin by 360° will always return to the original (starting) position, so the final coordinates will be (-8,2) (-8,8) (-4,2).

solve this question.

Answers

Answer:

The answer is 9. Hope it helps :)

Step-by-step explanation:

12+4÷2^3-7×0.5

= 12+4÷8-7×0.5

= 12+0.5-7×0.5

= 12+0.5-3.5

= 12.5-3.5

= 9

In right triangle ΔABC, ∠C is a right angle, AC = 20 and m∠A = 41º. Find AB to the nearest tenth.
I NEED HELP ASAP
PLEASE!!!!!!!! STEP BY STEP

Answers

Answer:

AB = 26.5º

Step-by-step explanation:

cosA = adj/hyp

cosA = AC/AB

cos41 = 20/AB

Multiply both sides by AB

AB * cos41 = 20

Divide both sides by cos41

AB = 20/cos41

AB = 26.5º

Answer:

AB = 26.5

Explanation:

ΔABC is right in the angle ∠C

in this case AB is the hypotenuse of the triangle ABC

according to the given data we will use the length of AC which is the adjacent side to the angle ∠A and the Cosine of the angle ∠A in the following formula:

the hypothenuse = adjacent side / cosine of the angle

AB = 20 / cos(41°)

AB = 26.5

what is the slope and y intercept of y=8x+1

Answers

Answer:

the slope is 8 and the y-int is 1

Step-by-step explanation:

Slope Intercept Form---> y=mx+b

m= slope

b= y-int

Answer:

y=1 hope this help

Step-by-step explanation:

two rectangles are similar. the first rectangle has a length of 15 cm and a width of 10 cm. the width of the second rectangle is 25 cm. what is the length

Answers

Here is the answer with explanation.
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