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
Taya2010 [7]
3 years ago
6

6. What is the value of the expression below when x = 6 and y = 2?

Mathematics
1 answer:
liubo4ka [24]3 years ago
6 0

Value of xy - y is 10 when x = 6 and y = 2

Step-by-step explanation:

  • Step 1: Find the value of xy - y when x = 6 and y = 2

xy - y = 6 × 2 - 2

         = 12 - 2 = 10

You might be interested in
Identify the "inside function" u = f(x) and the "outside function" y = g(u). Then find dy/dx using the Chain Rule.
skad [1K]
DfLet f(x)=\sec x and g(x)=\sqrt x. Then

y=\sec\sqrt x=\sec(g(x))=f(g(x))=f\circ g(x)

By the chain rule,

\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\mathrm dy}{\mathrm du}\dfrac{\mathrm du}{\mathrm dx}

where u=g(x)=\sqrt x, so that y=f(g(x))=f(u)=\sec u. We have

\dfrac{\mathrm du}{\mathrm dx}=\dfrac1{2\sqrt x}
\dfrac{\mathrm d\sec u}{\mathrm du}=\sec u\tan u

and so

\dfrac{\mathrm dy}{\mathrm dx}=\sec u\tan u\dfrac{\mathrm dy}{\mathrm du}=\dfrac{\sec\sqrt x\,\tan\sqrt x}{2\sqrt x}
5 0
3 years ago
Use the pythagorean theorem to prove that this point lies on the unit circle. Find csc(0) where 0=-120.
exis [7]

By applying Pythagorean theorem, we have proven that the point (-1/2, -√3/2) lies on the unit circle.

<h3>How to prove this point lies on the unit circle?</h3>

In Trigonometry, an angle with a magnitude of -120° is found in the third quarter and as such, both x and y would be negative. Also, we would calculate the reference angle for θ in third quarter as follows:

Reference angle = 180 - θ

Reference angle = 180 - 120

Reference angle = 60°.

For the coordinates, we have:

sin(-120) = -sin(60) = -1/2.

cos(-120) = -cos(60) = -√3/2.

By applying Pythagorean theorem, we have:

z² = x² + y²

z = √((-1/2)² + (-√3/2)²)

z = √(1/4 + 3/4)

z = √1

z = 1.

Read more on unit circle here: brainly.com/question/9797740

#SPJ1

4 0
2 years ago
A stereo system is being installed in a room with a rectangular floor measuring 13 feet by 11 feet and a 7​-foot ceiling. The st
zhuklara [117]

Answer:

  about 22.2 feet

Step-by-step explanation:

The wire can run diagonally across the floor and, from the intersection with the wall, diagonally up the wall. The total length is computed per the hint to be ...

  d = √(18^2 +13^2) = √493 ≈ 22.20 . . . .  feet

___

If the wire were to go up the short wall, its length would be ...

  d = √(11^2 +20^2) = √521 ≈ 22.83 . . . . feet

_____

<em>Comment on the attachment</em>

The red represents the floor; the green represents the long wall.

6 0
3 years ago
WILL GIVE BRAINLIEST!! PLEASE HELP ASAP !!! 20 POINTSSSSS
grin007 [14]

Answer:

She can buy 5 rolls of crepe paper with 2ft of paper left.

Step-by-step explanation:

If you multiply 12ft by 4 sides you will get 48ft so then 5 rolls of paper that is 10ft equals 50ft so you will have more than enough paper

5 0
3 years ago
State a true conclusion. 1) If a ● b = 0, then a = 0 or b = 0 2) 3x = 0 Conclusion:
Basile [38]

Answer:

Conclusion: x = 0

Step-by-step explanation:

given: If a ● b = 0, then a = 0 or b = 0

then for 3x = 0, either 3 = 0 (not possible because 3 is obviously not zero) or x = 0 (answer)

5 0
3 years ago
Read 2 more answers
Other questions:
  • If Y is directly proportional to X² and y=21 when x=2, find the value of y when X=4.
    15·2 answers
  • What is the coefficient of x^2 y^3 in the expansion of (2x+y)^5
    15·1 answer
  • Please help with multiplying binomials! Show your work!<br> (3n+2)(n+3)
    14·1 answer
  • <img src="https://tex.z-dn.net/?f=8%20-%203w%20%3D%20%20-%202w" id="TexFormula1" title="8 - 3w = - 2w" alt="8 - 3w = - 2w" ali
    8·1 answer
  • PLEASE HELP 25 POINTS!
    10·2 answers
  • 1. 8q+ 6 ; q = 2
    10·1 answer
  • Lisa Company uses the periodic inventory system to account for inventories. Information related to Lisa Company's inventory at O
    8·1 answer
  • OMGGG!!! ACTUALLY SOMEONE PLEASE HELP!!! PLEASE!!! THIS IS PAST DUE!!! HELLLLP!! ANSWER ALL!!!!! HELP ME!!!!
    12·1 answer
  • Tina wants to run 123 miles over
    14·2 answers
  • For each model, write a fraction greater than 1 for the parts<br> that are shaded.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!