Mathematics High School

Does anyone know how to solve this?

Answers

Answer 1

9514 1404 393

Answer:

Step-by-step explanation:

The tangent of the angle can be found using the identity for the tangent of the difference of angles.

tan(α-β) = (tan(α) -tan(β))/(1 +tan(α)tan(β))

The tangent of the angle of each vector is the ratio of the j coefficient to the i coefficient.

tan(α) = -2/3

tan(β) = 4/7

tan(α-β) = (-2/3 -4/7)/(1 +(-2/3)(4/7))

= (-14-12)/(21 -8) = -26/13 = -2

Then the magnitude of the angle between the vectors is ...

arctan(2) ≈ 63.43°

Related Questions

8. There are 575 students in a school. If the number of girls is 54 more than the boys
how many boys are there in the school ?Find it.

Answers

Step-by-step explanation:

here's your solution

=> total number of student = 575

=> let the number of boys be x

=> then the number of girls = x + 54

=> a/q , x + x + 54 = 575

=>.2x + 54 = 575

=>. 2x = 575 - 54

=> 2x = 521

=> x = 521/2

=> x = 260.5

=> number of girls = 260.5+ 54.

=> 314.5

Please help!!!!! ASAP

Answers

Answer:

a gain of 3 points

Step-by-step explanation:

8 5/8+ 1 3/8=10

13-10=3

hope this helps

According to research Paul Monroe conducted on the Internet, the base price of a new car is $18,844.00, the options total $2,115.50, and the destination charge is $635.00. He knows that the dealer paid about 97 percent of the base price and 96 percent of the total options. What should Monroe estimate as the dealer’s cost for the car?

Answers

Answer:

Step-by-step explanation:

$20,123.54

$21,785.00

$20,944.56

please give the answer

Answers

Answer:

-1

It just takes a while to go through it all

Answer:

-1

Step-by-step explanation:

took me a while, but im pretty sure i got it

Help please before the bots with the links answer
Brainiest answer will be given

Answers

Answer:

1/3

Step-by-step explanation:

1/5 as a decimal and rounded to the nearest tenth

Answers

Answer:

0.2

Step-by-step explanation:

1 divided by 5

2/5=0.4

3/5=0.6

4/5=0.8

5/5=1

The lottery randomly draws 4 numbers out of 48 for a game and order doesn’t matter. A women selects 4 numbers, what is the probability the she wins the lottery?

Answers

Answer:

4/48 simplified by 4 = 1/12

The probability is 1/12

.............

Solve for x please and thank you

Answers

9514 1404 393

Answer:

x = 7

Step-by-step explanation:

The product of segment lengths is the same for the two chords.

9(21) = x(27)

x = 189/27 . . . . . divide by 27

x = 7

Please Help Marking Brainiest

Answers

Answer:

(4,18)

Step-by-step explanation:

Answer:

(4,18)

Step-by-step explanation:

We can just pluck the x values into the equation: y = 5x -1 to see if the y values fit.

1. y = 5(4) - 1

= 20 - 1

= 19 (Nope, 18 is not 19)

2. y = 5(3) - 1

= 15 - 1

= 14 (Yep, same as option)

3. y = 5(0) - 1

= 0-1

= -1 (Yep, same as option)

4. y = 5(2) - 1

= 10 - 1

= 9 (Yep, same as option)

Which ratio is equivalent to the ratio 33:39?

A. 26:22

B. 22 to 26

C. 22 to 13

D. 13:22

Answers

9514 1404 393

Answer:

B. 22 to 26

Step-by-step explanation:

Multiply each value in the ratio by 2/3 to see an equivalent that is among the choices.

33 : 39 = (2/3)(33) : (2/3)(39) = 22 : 26

Find the unit rate. Round to the nearest hundredth, if necessary.

$5.99 for 18 lb

Answers

.33 cents a pound
5.99/18=.33277778
Round to .33

i need help with this math 50 points if you get is right

Answers

Answer: 8

Explanation:

find the given questions

Answers

9514 1404 393

Answer:

next term: 15an = n(n+1)/2

Step-by-step explanation:

Each term is the previous term with the current term number added. The 5th term will be 5 + (4th term) = 5 + 10 = 15.

The next term is 15.

_____

The sequence of triangular numbers is given by the explicit formula ...

an = n(n+1)/2

Finding the Formula

The sequence of first differences is ...

3 -1 = 2

6 -3 = 3

10 -6 = 4

And the sequence of second differences is ...

3 -2 = 1

4 -3 = 1

These are constant, indicating the sequence is described by a polynomial function of 2nd degree.

There are several ways to find the coefficients of the quadratic function. One is to solve for them using a system of equations.

n = 1

a1 = 1 = a(1)^2 +b(1) + c

n = 2

a2 = 3 = a(2)^2 + b(2) +c

n = 3

a3 = 6 = a(3)^2 +b(3) +c

To solve, we can subtract each equation from the next:

a2 -a1 = (3) -(1) = a(4 -1) +b(2 -1) +c(1 -1)

2 = 3a +b

and

a3 -a2 = (6) -(3) = a(9 -4) +b(3 -2) +c(1 -1)

3 = 5a +b

Now we can subtract the first of these equation from the second:

(3) -(2) = a(5 -3) +b(1 -1) ⇒ 1 = 2a ⇒ a = 1/2

Then ...

2 = 3(1/2) +b

1/2 = b

1 = a + b + c ⇒ 1 = 1/2 + 1/2 + c ⇒ c = 0

So, the quadratic function describing the sequence of triangular numbers is ...

an = (1/2)(n^2 +n)

an = n(n+1)/2

Jonathan's scout troop tie-dyed sweatshirts and T-shirts last year for a fundraiser. For every 20 sweatshirts, they dyed 30 T-shirts. This year, Jonathan's scout troop will keep the same ratio of sweatshirts to T-shirts. They plan to tie-dye 60 sweatshirts.
How many T-shirts will Jonathan's scout troop dye this year?

Answers

Answer:

Step-by-step explanation:

Which value or values for the variable x from the set below will make 10-2x4 true? please I'll give brainly

Answers

Answer:

im happy to help but what are the options?

Step-by-step explanation:

Solve the equation to find the value of x

Answers

Answer: x=x there's no equation

Step-by-step explanation:

A rectangle is divided in 6 squares and the smallest square's side is 2m. What is the rectangle's area. Here's a picture. I'll give brainliest please help . https://imgur.com/squjBbs

Answers

The area is 24 i think?

Solve the equation. Type your answer in the box as positive or negative whole number (Examples: 2 -4 6 -8)

-6n - 5 = 31

Answers

Answer:

-6n-5=31

Step-by-step explanation:

-6n=36

n=36/-6

n=(-6)

Answer:

Solve the equation. Type your answer in the box as positive or negative whole number (Examples: 2 -4 6 -8)

Step-by-step explanation:

Hey if u see this CORTEZ ARI KIRITO GUYS MY ACC GOT DELETED TEXT ME BACK PLZPLZPLZZZ

John is starting his own lawn mowing business. John thinks he can charge $12.50 per hour. If he knows he will only be able to work 160 hours per month (that's 40 hours per week), how much money will he earn each month

Answers

Answer:

2000

Step-by-step explanation:

12.50x 160=2000

In a race , Ram covers 5 km in 20 min. How much distance will he cover in 100 min ?
*so what now their gonna delete a math question too? :()

Answers

Answer:

25 km

Step-by-step explanation:

PLEASE HELP ME ASAP! I WILL GIVE YOU BRAINLIEST!!!!

Answers

Answer:

i dont know sorry

Step-by-step explanation:

i dont know sorry

A line intersects the point (-3, -7) and
has a slope of -3. What is the
slope-intercept equation for this line?

Answers

Answer:

y=-3x-16

Step-by-step explanation:

y-y1=m(x-x1)

y-(-7)=-3(x-(-3))

y+7=-3(x+3)

y=-3x-9-7

y=-3x-16

Which of the fractions are in ascending order below (from smallest to largest) *

(a) 3/4, 1/4, 1/2

(b) 1/2, 1/4, 3/4

(c) 1/2, 3/4, 1/4,

(d) 1/4, 1/2, 3/4

Answers

Answer:

Step-by-step explanation:

because i know and you have to trust me

please help meeeeee

Answers

use SOHCAHTOA. sin=opposite/hypotenuse, cosine=adjacent/hypotenuse, and tangent=opposite/adjacent

An item is regularly priced at $34. Reuben bought it on sale for 10% off the regular price.

Answers

Answer:

New price is $30.6

Step-by-step explanation:

10% of 34 is 3.4

34 - 3.4 = 30.6

Nikki has $10 to buy snacks. She buys 2 candy bars that are $0.79 each, and she buys a pa
cookies that cost $3.89. How much did she spend in all on snacks?

Answers

Answer:

$5.47

Step-by-step explanation:

You multiply 2 by 0.79. Then you add that result (1.58) to 3.89 and you get your answer.

Given p/8 = - 30/q = - 5, find the value of p and q

Answers

Answer:p=28 and q=4(7)

Step-by-step explanation:

p=28 and q=4(7)

After getting new carpet installed, Antonio noticed that the door would not close. He trimmed to of an inch off of the bottom of the door to see if it would help. After doing this three more times, the door finally closed. If the door was originally 84 inches tall, how tall was it after he trimmed it?

(PLEASE HELP THIS IS 90℅ IN MY GRADE)

Answers

wait, what does to of an inch mean?

Guthrie made the input-output table shown below.
Input (x)
1
2
3
Output (v)
4
7
10
13
4
Which of the following equations is true for all values in Guthrie's input-output table?
AI +3 = y
B :+7=y
C 3x+1=y
D) 4.1 - 1=y

Answers

9514 1404 393

Answer:

C 3x +1 = y

Step-by-step explanation:

x-values increase by 1 from row to row.

y-values increase by 3 from row to row.

The slope of the linear function is the ratio of the y-increase to the x-increase:

m = ∆y/∆x = 3/1 = 3

The only offered choice with an x-coefficient of 3 is ...

C 3x +1 = y

If you check this against the table entries, you find it fits.

3(1) +1 = 4

3(2) +1 = 7

and so on.

I dont get this pls help i need it ASAP

Answers

They are all divisible by 8, I hope that’s what your asking.

Other Questions

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