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4 years ago

a bag has 3 red marbles, 2 blue, 1 yellow and 4 green what is the probability of drawing a red or green

Mathematics

2 answers:

wel4 years ago

5 0

Answer:

0.7

Step-by-step explanation:

Total marbles: 10

P(red or green) = 7/10 = 0.7

Leni [432]4 years ago

4 0

Answer:

7/10

Step-by-step explanation:

3 red marbles, 2 blue, 1 yellow and 4 green = 10 marbles

red or green = 3+4 = 7 marbles

P(red or green) = red or green / total

= 7/10

You might be interested in

One diagonal of a rhombus has endpoints (-11, -9) and (-5, -3).

valina [46]

Answer:

(-10, -8) and (-6, -4)

Step-by-step explanation:

we know that

The diagonals of a rhombus are perpendicular

If two lines are perpendicular, then the product of their slopes is equal to -1

m1*m2=-1

step 1

Find the slope of the given diagonal

we have

(-11, -9) and (-5, -3)

m=(-3+9)/(-5+11)

m=-6/6=-1

Find the slope of the other diagonal

we have

m1=-1

Find m2

m1*m2=-1

(-1)*m2=-1

m2=1

step 2

Verify the slope of each of the endpoints of the other diagonal

The slope of the other diagonal must be equal to 1

case a) (-10, -4) and (-6, -8)

m=(-8+4)/(-6+10)

m=-4/4=-1

therefore

The points of case a) cannot be the end-points of the other diagonal

case b) (-8, -3) and (-5, -6)

m=(-6+3)/(-5+8)

m=-3/3=-1

therefore

The points of case b) cannot be the end-points of the other diagonal

case c) (-8, -4) and (-8, -8)

m=(-8+4)/(-8+8)

m=-4/0 -----> undefined

therefore

The points of case c) cannot be the end-points of the other diagonal

case d) (-10, -8) and (-6, -4)

m=(-4+8)/(-6+10)

m=4/4=1

therefore

The points of case d) can be the end-points of the other diagonal

6 0

3 years ago

Solve x3 = 64 over 27.

velikii [3]

X^3=64/27
x = 3√(64/27)
x = 4/3

3 0

3 years ago

Read 2 more answers

A utility company was interested in knowing if agricultural customers would use less electricity during peak hours if their rate

Misha Larkins [42]

Answer:

A) Status of Rate structure

B) Rate of usage of Electricity

C) Double blind

D) Neither

Step-by-step explanation:

A) The Explanatory variable is the Status of Rate structure during peak hours

B) The response Variable

The response variable in this experiment is the rate of usage of Electricity

( i.e. via meter readings )

C) The experiment can be considered a double -blind because the participants do not know the group they are assigned to ( either standard rate or time-of-day rate structure) but can only read their meters while the technician does not know what rate structure the participants where assigned to or what meter was assigned to each group

D) The experiment Did not use matched blocks or matched pairs

7 0

3 years ago

There are 80 major sources of pollen in state A. These pollen sources are categorized as grasses, weeds, and trees. If the numb

Oxana [17]

Answer:

Grasses: 12

Weeds: 29

Trees: 39

Step-by-step explanation:

Let G, W and T represent number of grasses, weeds, and trees that are major pollen sources.

We have been given that there are 80 major sources of pollen in state A. We can represent this information in an equation as: