answer.
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
kondor19780726 [428]
2 years ago
12

Twelve of the 20 students in Mr. Skinner’s class brought lunch from home. Fourteen of the 21 students in Ms. Cho’s class brought

lunch from home. Siloni is using two 15-section spinners to simulate randomly selecting students from each class and predicting whether they brought lunch from home or will buy lunch in the cafeteria.
If each spinner is divided into 15 congruent sectors, how does the spinner representing Mr. Skinner’s class differ from the spinner representing Ms. Cho’s class?
One more sector of the Skinner-class spinner will represent bringing lunch from home.
One fewer sector of the Skinner-class spinner will represent bringing lunch from home.
Two more sectors of the Skinner-class spinner will represent bringing lunch from home.
Two fewer sectors of the Skinner-class spinner will represent bringing lunch from home.
Mathematics
2 answers:
babymother [125]2 years ago
9 0

Solution:

Number of students in Mr.Skinner's class who brought lunch from home if there are 20 students in the class=12

Fraction of students who brought lunch from home in Mr. Skinner's class=\frac{12}{20}=\frac{3}{5}

Number of students in Ms. Cho's class who brought lunch from home if there are 21 students in the class=14

Fraction of students who brought lunch from home in Ms. Cho's class=\frac{14}{21}=\frac{2}{3}

As Siloni is using  two 15-section spinners to simulate randomly selecting students from each class and predicting whether they brought lunch from home or will buy lunch in the cafeteria.

Number of Congruent sectors in each Spinner=15

So, if we represent students from Mr. Skinner's class who brought lunch from home in Spinner having 15 congruent Sectors =\frac{9}{15}

So, if we represent students from Mrs. Cho's class who brought lunch from home in Spinner having 15 congruent Sectors =\frac{10}{15}

Mr Skinner class +1 = Mr's Cho's Class

So Ms Cho's class =One more sector of the Skinner-class spinner will represent bringing lunch from home.

Option A which is One more sector of the Skinner-class spinner will represent bringing lunch from home represents Ms Cho's Class.

lutik1710 [3]2 years ago
7 0

Answer: A

Step-by-step explanation:

You might be interested in
Bernita and Derek each plot a number on a number line. The numbers are unique but have the same absolute value. The sum of the a
grandymaker [24]

Answer:

<h2>The answer is 75 and 75</h2>

Step-by-step explanation:

hope this helps!!

6 0
2 years ago
Read 2 more answers
Jerome ate 4/11 of the Pizza how much did that leave for Zachary​
ratelena [41]

Answer:

7/11 of the Pizza was left for Zachary.

Step-by-step explanation:

Zachary had 1 - 4/11

= 11/11 - 4 /11

= 7/11.

5 0
2 years ago
On a coordinate plane, a curved line begins at point (1, 2) and ends at (5, 4). What is the range of the function on the graph?
slavikrds [6]

Answer:

Step-by-step explanation:

2<y<4

all real numbers >2 and < 4

5 0
2 years ago
G find the area of the surface over the given region. use a computer algebra system to verify your results. the sphere r(u,v) =
Svetach [21]
Presumably you should be doing this using calculus methods, namely computing the surface integral along \mathbf r(u,v).

But since \mathbf r(u,v) describes a sphere, we can simply recall that the surface area of a sphere of radius a is 4\pi a^2.

In calculus terms, we would first find an expression for the surface element, which is given by

\displaystyle\iint_S\mathrm dS=\iint_S\left\|\frac{\partial\mathbf r}{\partial u}\times\frac{\partial\mathbf r}{\partial v}\right\|\,\mathrm du\,\mathrm dv

\dfrac{\partial\mathbf r}{\partial u}=a\cos u\cos v\,\mathbf i+a\cos u\sin v\,\mathbf j-a\sin u\,\mathbf k
\dfrac{\partial\mathbf r}{\partial v}=-a\sin u\sin v\,\mathbf i+a\sin u\cos v\,\mathbf j
\implies\dfrac{\partial\mathbf r}{\partial u}\times\dfrac{\partial\mathbf r}{\partial v}=a^2\sin^2u\cos v\,\mathbf i+a^2\sin^2u\sin v\,\mathbf j+a^2\sin u\cos u\,\mathbf k
\implies\left\|\dfrac{\partial\mathbf r}{\partial u}\times\dfrac{\partial\mathbf r}{\partial v}\right\|=a^2\sin u

So the area of the surface is

\displaystyle\iint_S\mathrm dS=\int_{u=0}^{u=\pi}\int_{v=0}^{v=2\pi}a^2\sin u\,\mathrm dv\,\mathrm du=2\pi a^2\int_{u=0}^{u=\pi}\sin u
=-2\pi a^2(\cos\pi-\cos 0)
=-2\pi a^2(-1-1)
=4\pi a^2

as expected.
6 0
2 years ago
Lauren is running in a marathon to raise money for her favorite charity. The total distance of the marathon is 12.5 miles. So fa
kirill [66]
Hi! So when you are dividing or multiplying a decimal by 10, it becomes a lot easier than it looks. If you divide by 10, you move the decimal to the left one space. If you multiply the decimal by 10, you move the decimal to the right one space. Because you are diving 12.5 by 10, you move the decimal to the left one space, which then becomes 1.25. So, Lauren has run 1.25 miles. If you want to double check, you can multiply 1.25 by 10, which comes out to 12.5. Your answer is 1.25! Hope this helps!!
3 0
2 years ago
Other questions:
  • Carrie wants to decorate her party with bundles of balloons containing three balloons each. balloons are available in 4 differen
    10·2 answers
  • A school baseball team raised $810 for new uniforms. each player on the team sold one book of tickets. there were 10 tickets in
    13·1 answer
  • Alexander's dividing oranges into eighths he has 5 oranges.how many eights will be have
    10·2 answers
  • Felicia invested money at an interest rate of 4%. After six months, she had earned $90.00 interest. How much money did Felicia i
    6·2 answers
  • Yesterday, the snow was 2 feet deep in front of Archie’s house. Today, the snow depth dropped to 1.6 feet because the day is so
    5·1 answer
  • If luke’s is 5 years younger than 3 times Syndey’s age , s. in this situation what does 3s represent
    8·2 answers
  • The weight of a honeybee is 1.2 x 10^-1 g. The weight of the pollen collected by the bee on one trip is 6.0⋅10 ^−2 g.
    10·2 answers
  • What value should going to the empty boxes to complete the calculation for finding the product of 0.98×0.73? both numbersare the
    9·1 answer
  • What is the area of a rectangle with length 1/12 ft and width 3/4 ft
    13·1 answer
  • WHICH IS A TRUE STATEMENT BASED ON THE DOT PLOTS BELOW 10 POINTS
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!