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
belka [17]
3 years ago
7

HELPP PLEASE DUE TOMMOROW PLEASE ANSWER QUESTION B

Mathematics
1 answer:
marin [14]3 years ago
4 0

Answer:

28 non-blue marbles.

Step-by-step explanation:

Initial probability of choosing a blue marble = 4/12

Let the number of non-blue marbles to be added be x.

\frac{4}{12+x} =\frac{1}{10}

12+x=40 (cross multiply)

x=28

You might be interested in
Each team in the softball league plays each of the other teams exactly once. If
Aleks04 [339]
<span>Each team in the softball league plays each of the other teams exactly once. For every game, there is 2 team playing. The order is not important because  A vs B is same as B vs A
So you just need to makes a combination of 2 that have a result of 21. If there is t number of teams, the number of matches would be:
tC2 = t!/2!(t-2)! = 21
</span>t! / (t-2)! = 21 *2
(t)(t-1)= 42
t^2 -t -42=0
(t-7)(t+6)
t=7 ; t=-6

Excluding the minus result, you got 7 teams.
6 0
3 years ago
Which questions can be answered by finding the surface area? Check all that apply.
True [87]

Answer:

Step-by-step explanation:

Surface area is pretty synonymous with area.

How much paint is needed to paint the outside of a birdhouse?

Paint is measured in volume, so not surface area

How much wallpaper is needed to cover the walls of your room?

Since its just the walls its not total surface area, but surface area of the walls.

How much water will it take to fill a rectangular container?

water is measured in volume, especially when wanting to fill something.

How much topsoil can a gardener place in his wheelbarrow?

Wants to know how much topsoil is needed to FILL the wheelbarrow, filling is volume.  So not surface area.

How much fabric is needed to make a pillowcase for a pillow?

Not asking to fill the pillowcase, just how much is needed for the thin, one layer thick case.  So this is surface area.  

3 0
3 years ago
On a coordinate grid, both point (−4, −1) and (2, 6) point are reflected across the y-axis. What are the coordinates of the refl
vichka [17]
The reflected points are (4, -1) and (-2, 6).
4 0
3 years ago
Simplify please help
olchik [2.2K]

Answer:

all work is shown/pictured

3 0
3 years ago
Use this figure to find the value of ∠FOD.
MAXImum [283]
Would u mind sending the figure..!please

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the simplest form for 9/3?
    13·2 answers
  • 1/2 (3x−2)− 1/3 (x+1)=
    15·1 answer
  • *WILL MARK BRAINLIEST!!!!!!*
    14·1 answer
  • Adam is in mexico where the temperature is given in degrees Celsius. to convert to Fahrenheit, you multiply the Celsius temperat
    6·1 answer
  • Solve 3x-4=17 you may use the flowchart to help if u wish
    14·1 answer
  • -6 \times 5 = ?−6×5=?minus, 6, times, 5, equals, question mark
    12·1 answer
  • Its eitheir a or c b and d dont check out what is it image down below
    6·2 answers
  • Thank you if you solve this for me !!
    9·1 answer
  • ASAP
    11·1 answer
  • 3.01 Discussion: Two-Variable Linear Equations and Inequalities
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!