Mathematics High School

Find the dot product of the vectors u and v, where u=12 and v=7, and the angle between is theta=55

A. u x v=68.81
B. u x v=48.18
C. u x v=10.90
D. u x v=2.87

Answers

Answer 1

Answer:

The answer is B

Step-by-step explanation:

Answer 2

Answer:

Option B is correct.

Related Questions

I really need help right now

Answers

Answer:

can you post a better quality pic in the comments>? i cant read it enough

Step-by-step explanation:

true or false?

a. there are 4 terms in the algaebraic
expression
- ( )

b. the algebraic expression can be simplified into X(6y+3)
-( )

c. the value of the algebraic expression when x = -1 and y= 2 is -1
-( )

d. the coefficient of x in the term 4xy is 3
-( )
​

Answers

Answer:

true, but I'm not sure because i forgot

Answer:

✔ -1 and 1/3

Step-by-step explanation:

i got it right on edge

what is central tendency?

Answers

Answer:

the tendency for the values of a random variable to cluster round its mean, mode, or median.

In statistics, a central tendency is a central or typical value for a probability distribution. It may also be called a center or location of the distribution. Colloquially, measures of central tendency are often called averages

determine the number of solutions, y=x+2 and x=-1

Answers

There is only one solution.

y = x+2

x = -1

Substitute x = -1  in y = x+2

y=-1+2

y = 1

We only get the single value of y and x so It's clear that there's only one solution.

Complete explanation of water the graph represents a proportional or a non-for pusher liner relationship

Answers

Answer:

Porportional

Step-by-step explanation:

Its a straight line.

(7x2 − 3)(8x2 − 7x + 5)

Answers

Answer:

231-77x

Step-by-step explanation:

There are 20 marbles in a bag. Each marble has a different design or color. How many ways can you draw 8 marbles from the jar? Is it permutation or combination.

Answers

Answer:

The number of ways of selecting a combination of 8 marbles from a bag containing 20 marbles is 125970

Step-by-step explanation:

The number of selecting 8 marbles from a bag of 20 marbles

A combination gives the number of possible order or arrangement in a collection of k items selected from a set of n items

[tex]C_{n,k} = \dbinom{n}{k}= \dfrac{n!}{k!\cdot \left ( n - k \right )!}[/tex]

In the question, k = 8, and n = 20

Substituting the values of n and k in the above equation gives;

[tex]C_{20,8} = \dbinom{20}{8}= \dfrac{20!}{8!\times\left ( 20 - 8 \right )!} = 125,970[/tex]

Therefore, the number of ways of selecting 8 marbles from a bag containing 20 marbles is given by the combination C₂₀, ₈ = 125970.

Select the correct solution set.

50 ≥ 15x

{x | x ≤ 10/3}
{x | x ≥ 10/3}
{x | x > 10/3}

Answers

2nd option I’m pretty sure but it’s been awhile since I took this math

What are the coordinates of quadrilateral A’ B’ C’ D’?

Answers

Answer:

RIP Juice WRLD

Step-by-step explanation:

Y0UR M0MWY 100KS L1KE TH1$

Answers

Answer:

NICE!!!

Step-by-step explanation:

A circle is represented by the equation x²+y²−8y−20=0. What is the diameter of the circle?

Answers

Answer:

center:(0,4) radius:6

Step-by-step explanation:

need help with 7 and 8 please

Answers

Step-by-step explanation:

7.D -2,-1,0,1,2,3,4

8.C

The equation for line 1 is

Answers

Answer:

y=1x-5

Step-by-step explanation:

Answer:

The equation for line one is y = -2x - 5

Hi guys i need help with this problem y=mx+b

Answers

y = how far up

x = how far along

m = Slope or Gradient (how steep the line is)

b = value of y when x=0

How do you find "m" and "b"?

b is easy: just see where the line crosses the Y axis.
m (the Slope) needs some calculation:
m = Change in Y/change in X

PLEASE HELP PLEASEE!!!!!!!!!!!!!!

Answers

Answer:

B

Step-by-step explanation:

Answer:

B.) 17

Step-by-step explanation:

(07.07 LC)
Solve 3
5
6
6
6
30
7르
2
300
6
07.
11
7
2
9
30

Answers

Answer:

56

Step-by-step explanation:

The perimeter of a rectangular field is 318 yards. If the width of the field is 74 yards, what is its length?

Answers

318/2=159

159-74=85

the length is 85 yards

If angle MNO is a rectangle, and MO = 54 , what is the length of overline NP ? A. 34 B. 22 C. 18 D. 108 E. 27 F. Cannot be determined

Answers

Answer:

Option (E)

Step-by-step explanation:

LMNO is a rectangle.

MO = 54

By the property of a rectangle,

1). Diagonals are equal in length.

2). Diagonals equally bisect each other.

Since, MO = LN

Therefore, LN = 54

Since, NP = [tex]\frac{1}{2}(LN)[/tex]

NP = [tex]\frac{54}{2}[/tex] = 27

Option (E) will be the correct option.

Answer:

E ;27

Step-by-step explanation:

A. Y=6x+12
B. Y= 8x+15
C.y=6x+6
D.y=8x+8

Answers

Answer:

y=6x+6 will be the answer

does 9, 16, 5 make a right triangle? Explain

Answers

Answer:

By virtue of the Pythagorean Theorem, in a right triangle the sum of the squares of the smaller two sides equals the square of the largest side.

It does not make a right triangle. 9^2 + 5^2 = 106 while 16^2 = 256. So it is not same.

Thank you and please rate me as brainliest as it will help me to level up

No please mark as brainlist and follow me

Ralph and Liza are both driving from Los Angeles to Santa Fe. Ralph leaves at 7:00 and averages 60 mph (miles per hour) on the way. Liza leaves at 7:25 and averages 65 mph on the way. The situation is modeled by this system,
where x is the number of hours after Liza leaves and y is the distance each
will travel:

y = 60x + 25
y = 65x

How long after Liza leaves will she pass Ralph, and how far will they each
have traveled?

A. Liza will pass Ralph after 4 hours, and they each will have traveled
260 miles.

B. Liza will pass Ralph after 3 hours, and they each will have traveled
205 miles.

C. Liza will not pass Ralph, because she will never catch up with him.

D. Liza will pass Ralph after 5 hours, and they each will have traveled
325 miles.

Answers

Answer:

I'm pretty sure its D

Step-by-step explanation:

Liza will pass Ralph after 5 hours, and they each will have traveled 325 miles. Then the correct option is D.

What is the linear system?

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

Ralph and Liza are both driving from Los Angeles to Santa Fe.

Ralph leaves at 7:00 and averages 60 mph (miles per hour) on the way.

Liza leaves at 7:25 and averages 65 mph on the way.

The situation is modeled by this system will travel:

y = 60x + 25

y = 65x

where x is the number of hours after Liza leaves and y is the distance each

The time after Liza leaves will she pass Ralph will be

65x = 60x + 25

 5x = 25

   x = 5 hours

Then the distance covered by both after 5 hours will be

y = 65 (5)

y = 325 miles

More about the linear system link is given below.

https://brainly.com/question/20379472

#SPJ2

idk how to do this lol please help asap

Answers

Answer:

110

Step-by-step explanation:

Find how much bigger one triangle is than the other: 22 ÷ 2 = 11Apply our above knowledge to the missing side: 10 × 11 = 110

I hope this helps!

Deni made $100 yesterday at work. His boss gave him $20 for showing up, and Deni makes $10 for every hour he works. How many hours did Deni work?
HOW DO I SHOW MY WORK

Answers

Answer:

write it out

Step-by-step explanation:

if he got 20 for showing up, you subtract to from the total right away, so now you have 80 total, and at a rate of 10/hr, he must have worked 8hrs. (80/10)

Answer:

Deni worked 8 hours yesterday

Step-by-step explanation:

Mae Ling earns a weekly salary of $375 plus a 7.0% commission on sales at a gift shop. How much would she make in a work week if she sold $4,600 worth of merchandise?

Answers

Answer:

$697

Step-by-step explanation:

Given that :

Weekly earning = $375 plus 7% commission on sales

Earning if she sold $4600 worth of merchandise

Commision on sales = 7% of 4600

Commission = 0.07 * 4600

Commission on sales = $322

Total earning = $375 + $322

Total earning = $697

Graph y= 4/5x-7

Can someone help me with this please

Answers

Since the equation is linear, pick 2 points.
(0, -7), (5, -3)
And plot these points then draw a line through them

Larry mows lawns for $50 an hour. Last week, he gave all his customers a 20% discount off his hourly rate. Mrs. Grinnell hired Larry last week to mow her lawn, and Larry applied a 10% new customer discount to his already discounted rate. If Larry worked on Mrs. Grinnell's lawn for 3 hours, how much does Mrs. Grinnell owe Larry?

Answers

Answer:

If Larry worked on Mrs. Grinnell's lawn for 3 hours, Mrs. Grinnell would owe Larry $108.

Step-by-step explanation:

You have to find the total amount Larry would receive with $50 an hour:

$50*3=$150

Now, you have to calculate the amount with a 20% discount by calculating the 20% of $150 and subtracting that amount from $150:

$150*20%=$30

$150-$30=$120

Then, you have to calculate the 10% of $120 and subtract that amount from $120:

$120*10%=$12

$120-$12=$108

According to this, the answer is that if Larry worked on Mrs. Grinnell's lawn for 3 hours, Mrs. Grinnell would owe Larry $108.

Jenny had 0.6 grams of pepper. Then she used 0.47 grams of the pepper to make some scrambled eggs. How much pepper does Jenny have left?

Answers

Answer: 0.13 grams of pepper

Step-by-step explanation:

Since 0.6 is the same as 0.60, set up the subtraction sentence below:

0.60 - 0.47

______________________________

Now, subtract:

0.60 - 0.47 = 0.13

Your answer is 0.13 grams (13/100)

Answer:

1.07

=0.6+0.47=10.7=1.07

I NEED HELP first awnser gets brainliest

Answers

I believe it a not sure but seems more reasonable

The tens digit of a two digit number is five more than the units digit. Seven times the sum of the digits of this number is 3 less than the number itself. Find the number.

Answers

Answer:

94

Step-by-step explanation:

Let the unit's digit = [tex]y[/tex]

Let the ten's digit = [tex]x[/tex]

Then the number will be equal to [tex]10x+y[/tex]

Now, using the given statement:

[tex]x=y+5 ..... (1)[/tex]

[tex]7(x+y) = 10x+y-3\\\Rightarrow 7x+7y=10x+y-3\\\Rightarrow 6y-3x=-3 ..... (2)[/tex]

Now, using the equation (1) in equation (2):

[tex]6y-3(y+5) =-3\\\Rightarrow 3y-12=0\\\Rightarrow y =4[/tex]

By equation (1):

[tex]x = 4+5 \\\Rightarrow x =9[/tex]

Therefore, the number is :

[tex]10x+y= 10\times 9 +4 = \bold{94}[/tex]

parallel to the line y
- 2x + 3 through (0,5)

Answers

Answer:

Y = 2x + 5  

Step-by-step explanation:

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