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
jok3333 [9.3K]
3 years ago
8

Which equation models this problem?

Mathematics
2 answers:
Vladimir [108]3 years ago
4 0
C. 5/6b = 140
(*assuming b = total number of cards)
If the piles have an equal number of cards and 5 out of the 6 piles were put in the collection, 5/6 of the cards were put into the collection. The total number of cards put in the collection is 140, so 5/6b=140.
liubo4ka [24]3 years ago
3 0
Six equal piles. Five were put in a collection which equaled 140 cards. That means there were 28 cards per pile for a total number or cards equals 168 cards so the answer is C. 5/6b = 140
You might be interested in
Solve y=-2/5x+1/10 as a standard form
Ira Lisetskai [31]

Answer:

The answer is 4x+10y=1 :)

Step-by-step explanation:

5 0
3 years ago
Calculate the total interior angle of an octagon​
slava [35]
<h2>1080°</h2><h2></h2>

basically, the sum of all of the internal angles will be 1080

when you add all interior angles in an octagon you should get 1080

hope that helps !

8 0
3 years ago
Read 2 more answers
Write each expression as an algebraic​ (nontrigonometric) expression in​ u, u &gt; 0.
max2010maxim [7]

Answer:

\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)=\frac{20\sqrt{u^2-100}}{u^2}\text{ where } u>0

Step-by-step explanation:

We want to write the trignometric expression:

\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)\text{ where } u>0

As an algebraic equation.

First, we can focus on the inner expression. Let θ equal the expression:

\displaystyle \theta=\sec^{-1}\left(\frac{u}{10}\right)

Take the secant of both sides:

\displaystyle \sec(\theta)=\frac{u}{10}

Since secant is the ratio of the hypotenuse side to the adjacent side, this means that the opposite side is:

\displaystyle o=\sqrt{u^2-10^2}=\sqrt{u^2-100}

By substitutition:

\displaystyle= \sin(2\theta)

Using an double-angle identity:

=2\sin(\theta)\cos(\theta)

We know that the opposite side is √(u² -100), the adjacent side is 10, and the hypotenuse is u. Therefore:

\displaystyle =2\left(\frac{\sqrt{u^2-100}}{u}\right)\left(\frac{10}{u}\right)

Simplify. Therefore:

\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)=\frac{20\sqrt{u^2-100}}{u^2}\text{ where } u>0

4 0
3 years ago
How many different four-person relay teams can be chosen from eight students
aliina [53]
Slot method

8 optionns n 1st slot
7 options in 2nd slot (since 1 is at 1st slot)
6 options in 3rd slot
5 options in 4th slot

8*7*6*5=1680 ways
6 0
3 years ago
James is reading a book that is 1,400 pages he will read the same number of pages each day if he reads the book in 7 days how ma
Tamiku [17]
Hi will read 1,400 pages each day if he reads the book
6 0
3 years ago
Other questions:
  • A frustum is formed when a plane parallel to a cone’s base cuts off the upper portion as shown.
    9·2 answers
  • Find an equation of the circle with center at (-9,2) and passing through (2,-2) in the form of (x-A)^2+(y-B)^2=C where A,B,C are
    9·1 answer
  • PLEASE HELP ME WITH THIS PROBLEMS 2.
    11·1 answer
  • What is the domain of H
    11·1 answer
  • Find the quotient.<br> 4/5 ÷ 40<br>a.50 <br> b.32  <br>c.5/10 <br> d.1/50
    7·2 answers
  • Graph each function using a table of values, then identify its key characteristics.
    6·1 answer
  • Helppppppppppppppppppp
    8·1 answer
  • Please help as soon as possible my grades are being put in tomorrow! Question 3
    14·1 answer
  • 90 over 7 EndFraction divided by 1 and three-fourths
    6·1 answer
  • The perimeter of a semicircle is 81.212 yards. what is the semicircle's diameter?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!