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
Shtirlitz [24]
3 years ago
7

Substitution -just 4.g) r=-3.2p+q^2

Mathematics
1 answer:
Vlada [557]3 years ago
5 0

Answer is 25.6 you just put the numbers and multiply them and then add them

You might be interested in
Si sacas una carta al azar de un mazo estándar de 52 cartas, ¿Cuál es la probabilidad de que obtengas una carta que sea menor a
Firdavs [7]
Answer: 3

Explanation: 3
3 0
2 years ago
Drag each tile to the correct box. Vector t, with a magnitude of 4 meters/second and a direction angle of 60°, represents a swim
astraxan [27]

Answer:

From top to bottom, the boxes shown are number 3, 5, 6, 2, 4, 1 when put in ascending order.

Step-by-step explanation:

It is convenient to let a calculator or spreadsheet tell you the magnitude of the sum. For a problem such as this, it is even more convenient to let the calculator give you all the answers at once.

The TI-84 image shows the calculation for a list of vectors being added to 4∠60°. The magnitudes of the sums (rounded to 2 decimal places—enough accuracy to put them in order) are ...

... ║4∠60° + 3∠120°║≈6.08

... ║4∠60° + 4.5∠135°║≈6.75

... ║4∠60° + 4∠45°║≈7.93

... ║4∠60° + 6∠210°║≈3.23

... ║4∠60° + 5∠330°║≈6.40

... ║4∠60° + 7∠240°║≈ 3

_____

In the calculator working, the variable D has the value π/180. It converts degrees to radians so the calculation will work properly. The abs( ) function gives the magnitude of a complex number.

On this calculator, it is convenient to treat vectors as complex numbers. Other calculators can deal with vectors directly

_____

<em>Doing it by hand</em>

Perhaps the most straigtforward way to add vectors is to convert them to a representation in rectangular coordinates. For some magnitude M and angle A, the rectangular coordinates are (M·cos(A), M·sin(A)). For this problem, you would convert each of the vectors in the boxes to rectangular coordinates, and add the rectangular coordinates of vector t.

For example, the first vector would be ...

3∠120° ⇒(3·cos(120°), 3·sin(120°)) ≈ (-1.500, 2.598)

Adding this to 4∠60° ⇒ (4·cos(60°), 4°sin(60°)) ≈ (2.000, 3.464) gives

... 3∠120° + 4∠60° ≈ (0.5, 6.062)

The magnitude of this is given by the Pythagorean theorem:

... M = √(0.5² +6.062²) ≈ 6.08

___

<em>Using the law of cosines</em>

The law of cosines can also be used to find the magnitude of the sum. When using this method, it is often helpful to draw a diagram to help you find the angle between the vectors.

When 3∠120° is added to the end of 4∠60°, the angle between them is 120°. Then the law of cosines tells you the magnitude of the sum is ...

... M² = 4² + 3² -2·4·3·cos(120°) = 25-24·cos(120°) = 37

... M = √37 ≈ 6.08 . . . . as in the other calculations.

4 0
3 years ago
LOOK AT THE PICTURE BELOW PLEASE!
Brrunno [24]

Answer:

50

Step-by-step explanation:

Each question is 6%/3 = 2% worth. If each question is worth 2% then total questions must be 50 (cuz that would be 2% x 50 (total question) = 100%).

4 0
2 years ago
1. Write an algebraic expression to represent each verbal phrase.
pantera1 [17]

Answer:

a) p+2

b) 193x+19

c) 18 - a÷b

8 0
3 years ago
(01.07 MC)
attashe74 [19]
4.33
<span>4.1 × 10^13  / 9.46 × 10^12= 4.33</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the Y intercept of a line that passes through 3, -5 and has a slope of -1
    13·1 answer
  • 3. Cathy is purchasing a DVD player and a TV at the local electronic store. The DVD player costs
    14·1 answer
  • I require assistance​
    5·1 answer
  • 81.098 rounded to hundredths
    12·1 answer
  • Evaluate Expressions
    6·1 answer
  • Pls help me, I really need help
    15·1 answer
  • What is the area of a square with h=3in l=5in w=6in
    5·1 answer
  • 13 9/10 divided by 3 1/2
    10·1 answer
  • Write the equation of the graph shown below in factored form. a graph that starts at the top left and continues down through the
    13·1 answer
  • Simplify:<br> (12+14) x 8+ (8² +4²) =
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!