A drawing class was assigned a final project where students had to choose one art medium and one subject. The teacher kept track of the types of projects submitted.
The probability that a student used chalk is 0.3, the probability that a student chose to draw a plant is 0.6, and the probability that a student used chalk and chose to draw a plant is 0.2.
What is the probability that a randomly chosen student used chalk or chose to draw a plant?
Answers
Using probability concepts, it is found that: 0.7 = 70% probability that a randomly chosen student used chalk or chose to draw a plant.
-----------------------------
I am going to treat the probabilities of these events as Venn probabilities, stating that:
Probability A: student used a chalk.Probability B: student chose to draw a plant.-----------------------------
0.3 probability of a student using a chalk, thus [tex]P(A) = 0.3[/tex]0.6 probability that the student chose to draw a plant, thus [tex]P(B) = 0.6[/tex]0.2 probability of both, thus [tex]P(A \cap B) = 0.2[/tex].-----------------------------
The probability of chalk or plant is:
[tex]P(A \cup B) = P(A) + P(B) - P(A \cap B)[/tex]
From the bullet points:
[tex]P(A \cup B) = 0.3 + 0.6 - 0.2 = 0.7[/tex]
0.7 = 70% probability that a randomly chosen student used chalk or chose to draw a plant.
A similar problem is given at https://brainly.com/question/24231264
Related Questions
Reflections. PLS HELP WILL MARK BRAINLIEST! if you dunno don't put anything. :)
Point Q is reflected over the x-axis onto its image Q'(-7,-3). Determine the coordinates of the pre-image.
(7, 3)
(-7, 3)
(7, -3)
(-7, -3)
Answers
Answer: (-7,3)
Step-by-step explanation: brainly plz
Answer:
(-7, 3)
Step-by-step explanation:
(-7, 3)
since your going over the x axis the x values stays the same
Which number is a counting number? Can you do both of them plz
Answers
Question 4 is: C. the counting number is 4. Hope this helped :)
hi guys can l ask...... A BABY IS 3WEEKS AND 4 DAYS OLD. WHAT IS THE AGE OF THE BABY IN DAYS
Answers
Answer:
25 days old
Step-by-step explanation:
7 days = 1 week
3 x 7 = 21
21 + 4 = 25
25 days old
Find the distance between the points (0,-5) and (6,-3)
Answers
Answer:
up 11 and left 2
Step-by-step explanation:
Answer:
x1=0 x2=6 y1 =-5 y3=-3
Distance^2 = Square Root [(x2 - x1)^2 + (Y2 -Y1)^2]
Distance^2 = Square Root [(6 -0)^2 + (-3 --5)^2]
Distance^2 = Square Root [6^2 + 2^2]
Distance^2 = Square Root [36 + 4]
Distance = 6.3245553203
To check the answer go here: https://www.1728.org/distance.htm
Step-by-step explanation:
Which two choices use the Distributive Property correctly?
Select one or more:
a. 2(8 + 3) = 8(2) + 8(3)
b. 2(6 + 5) = 2(6) + 2(5)
c. 3(11) = 3(5) + 3(6)
d. 6(20) = 6(10) + 6(3)
Answers
2+4(7+2²)
--------------
4×2+5×3
Answers
Answer:
[tex] \frac{46}{23} [/tex]
Step-by-step explanation:
[tex] \frac{2 + 4(7 + {2}^{2} )}{4 \times 2 + 5 \times 3} [/tex]
[tex] \frac{2 + 4(7 + 4)}{4 \times 2 + 5 \times 3} = \frac{2 + 4(7 + 4)}{8 + 5 \times 3} [/tex]
[tex] \frac{2 + 4(7 + 4)}{8 + 15} = \frac{2 + 4 \times 11}{8 + 15} [/tex]
[tex] \frac{2 + 4 \times 11}{23} = \frac{2 + 44}{23} [/tex]
[tex] = \frac{46}{23} [/tex]
Answer:
2+4(7+2)^2/4×2+5×3= 46/23
12 - 5 + 6 × 3 + 20 ÷ 4
Answers
Answer:
30
Step-by-step explanation:
12 - 5 + 6 × 3 + 20 ÷ 4
12 - 5 + 6 × 3 + 5
12 - 5 + 18 + 5
7 + 18 + 5
25 + 5
30
Solve the equation.
2(3x+5)=46
Answers
x=6
Step-by-step explanation:
2(3x + 5) = 46,6x + 10 = 46,6x = 36,x = 6
The solution to the equation is x = 6.
Given is an equation 2(3x + 5) = 46, we need to solve it,
Let's start by gradually simplifying both sides of the problem in order to find the answer:
2(3x + 5) = 46
First, multiply 2 with each term included in parentheses to apply the distributive property:
6x + 10 = 46
Next, remove 10 from both sides to isolate the variable term:
6x = 46 - 10
That amounts to:
6x = 36
Lastly, find x by multiplying both sides by 6:
x = 36 / 6
x = 6
Consequently, x = 6 is the answer to the equation.
Learn more about equation click;
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x is 5 years older than y.Z is 6 years older than x how old are each person if the sum of their ages is 31
Answers
x= 5+y
(Adding 5 years to y will make both equal)
z is 6 years older than x
z= 6+x
In terms of y:
z= 6 + (5+y)
x+y+z = 31
(5+y) + y + 6 + (5+y) = 31
16 + 3y =31
3y = 15
y= 5
The three ages are
y= 5
x= (5+y) = 10
z= (6+5+y)= 16
16+10+5= 31
F(x)=2+4 hurry I need it know guys
Answers
Answer:
f(x) = 6
simple as me haha
Step-by-step explanation:
please give brainliest i need it
How do I solve 4/9x - 10 > x/3 - 12 word for word steps?
Answers
the answer is in the photo
A store sells DVDs for $15 and CDs for $12. What is the total cost of 5 DVDs and 6 CDs?
Answers
Answer:
5 DVDs are $25 and 6 CDs are $72
Step-by-step explanation:
The required cost of a store of selling DVDs for $15 and CDs for $12 is $147.
Given that,
A store sells DVDs for $15 and CDs for $12. What is the total cost of 5 DVDs and 6 CDs is to be determined.
Cost price is the price for the buyer pays to the seller for an object or product.
What is arithmetic?In mathematics, it deals with numbers of operations according to the statements.
Here,
A store sells DVDs for $15 and CDs for $12
Cost of 5 DVD's = 5 * 15
= $75
Cost of 6 CD's = 6 * 12
= $72
The total cost of 5 DVD's and 6CD's = 75 + 72 = $147
Thus, the required cost of a store selling DVDs for $15 and CDs for $12 is $147.
Learn more about cost price here:
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7.005 is 1/10 of 70.55
Answers
Answer:
true if you mistyped it. 1/10 of it would be 7.055 not 7.005
Please Help!!
f(x) = square root of x plus 7 ; g(x) = 8x -11
Find f(g(x))
Answers
I'm not sure if you mean ( [tex] \sqrt{x + 7} [/tex] ) or ( [tex] \sqrt{x} + 7[/tex] ) I solved it both ways .
[tex]f(x) = \sqrt{x + 7} \\ \\ f( \: g(x) \: ) = \sqrt{(8x - 11)+ 7} \\ = \sqrt{8x - 11 + 7} \\ = \sqrt{8x - 4} \\ = 2 \sqrt{2x - 1} [/tex]
____o_____o______
[tex]f(x) = \sqrt{x} + 7 \\ \\ f( \: g(x) \: ) = \sqrt{(8x - 11)} + 7 \\ = \sqrt{8x - 11} + 7\\ [/tex]
I hope I helped you^_^
Errrrrrrrrrrrrrrrrr
Answers
Answer:
st and wx
Step-by-step explanation:
bc they are on oppostite sides
solve for x
the area if the triangle is 50 and the one angle is 61, what is x
Answers
6
Step-by-step explanation: that’s math
URGENT
Can someone please convert the equation below into a logarithmic function?
Answers
Answer:
Step-by-step explanation:
y = [tex]e^{.4t}[/tex]
ln y = .4t
answer needed with explanation
Answers
Answer:
75 is the greatest
Step-by-step explanation:
a and b have to be either 5 or 7 and if you do 10 × 7 + 5 it will be the greatest number
Answer:
[tex]a \: and \: b \: must \: be \: highest \: \\ so \: take \: a = 7 \: and \: b = 5 \: \\ because \: tey \: are \: the \: highest \: prime \: number \\ then \: n = 10a + b \\ n = 10 \times 7 + 5 \\ = 70 + 5 = 75 \\ thank \: you[/tex]
Brian spends 1/4 of his wages on rent and 1/3
on food. If he makes £480 per week, how much money does he have left?
Answers
Answer:
200
Step-by-step explanation:
The cost of 6 pounds of almonds is $23.28. What is the constant of proportionality that relates y, the cost in dollars, to x, the number of pounds?
GIVING BRAINLIEST
Answers
Step-by-step explanation:
y = 23.28/6 x
y = 3.88 x
so, the constant of proportionality is 3.88
Find the slope of the line passing through the points (-8,-3) and (-3,4).
Answers
Answer:
2.333333
Step-by-step explanation:
Answer:
[tex]slope = \frac{y2 - y1}{x2 - x1} \\ = \frac{4 - - 3}{ - 3 - - 8} \\ = \frac{4 + 3}{ - 3 + 8} \\ = \frac{7}{5} = 1.4 \\ thank \: you[/tex]
What is an equation of the line that passes through the point (3,-1)(3,−1) and is parallel to the line 5x+3y=65x+3y=6?
Answers
Step-by-step explanation:
5x+3y = 6
5x = 6 - 3y
5x = 3(2-y)
5x/3 = 2 - y
y = 2 - (5x/3)
slope = x coefficient.
= - 5/3
Perpendicular slopes must be opposite reciprocals of each other: m1 * m2 = –1
new slope = 3/5
the equation formula
y = mx + b
m = new slope = 3/5
y = (3x/5) + b
From the point given (3 , -1 )
x = 3.
y = -1
-1 = (9/5) + b
b =( -5/5) - (9/5)
b = - 14 / 5
[tex]y = \frac{3}{5} x - \frac{14}{5} [/tex]
At the grocery store a Sprite costs $0.85, a 6 pack of Sprite is $4.08, and a 12 pack of Sprite is $8.52. Which is the better buy.
Answers
Answer:
it's better to buy the six pack
Step-by-step explanation:
4.08/6 is 0.68
8.52/12 is 0.71
making the 6 pack the better deal
Angle a and angle b are verticle angles if angel = (2x+26) and angle b = (3x+21) then find rhe measure of angle b
Answers
Answer:
36°
Step-by-step explanation:
a° = b°
2x+26 = 3x+21
x=5
thus a = 2(5)+26 = 36°
and b = 3(5)+21 = 36°
Sixteen is equal to 7 increased by the product of 3 and a number.
Answers
Answer:
number is 3
Step-by-step explanation:
let the number be n then the product of 3 and the number is 3n , so
16 = 7 + 3n ( subtract 7 from both sides )
9 = 3n ( divide both sides by 3 )
3 = n
That is the number is 3
what did the boy candy say to the girl candy
Answers
Step-by-step explanation:
Ahh!! that question is complicated....
I didn't realize that candy had genders.
Help me thank y'all so much
Answers
Answer:
15 p - 3 is the answer....
Good afternoon guys...
plz give the answer...
i will mark you brainliest...
class- 8
subject- maths
genius give the answer fast...
Answers
Step-by-step explanation:
Blue brackets denote answers
All the best
hope it helps
The reciprocal of 0 is 1/0
We know that it's impossible to divide by 0.
The numbers 2/2 and 1/1 .. are their own reciprocals.
The reciprocal of -5 is 1/5.
2. Rational numbers:
2/4, 3/5, 3/7, 4/2, 4/3
-3/3, -3/4, 1/2, 1/4, 1/7.
A rational number is a fraction. Something my Acellus Algebra I teacher told me:
Rational numbers are fractional.
32^2=32*32=1,024
46^2=46*46=2,116
Square root:
[tex]\sqrt{2304}[/tex]
48
[tex]\sqrt{529}[/tex]
23
Hope it helps!
HELP DUE IN 10 MINS!
Solve for x.
x + 1 / x + 5 = 7/6
Answers
Answer:
[tex]x = ( - 29)[/tex]
Step-by-step explanation:
[tex] \frac{x + 1}{x + 5} = \frac{7}{6} \\ use \: \: \: cross \: \: multipication \\ 7(x + 5) = 6(x + 1) \\ 7x + 35 = 6x + 6 \\ 7x - 6x = - 35 + 6 \\ x = - 29[/tex]
hope this helps you.
Given 1/f=1/v+1/u. make v the subject of the relation
Answers
Answer:
v = [tex]\frac{fu}{u-f}[/tex]
Step-by-step explanation:
Given
[tex]\frac{1}{f}[/tex] = [tex]\frac{1}{v}[/tex] + [tex]\frac{1}{u}[/tex]
Multiply through by fuv to clear the fractions
uv = fu + fv ( subtract fv from both sides )
uv - fv = fu ← factor out v from each term on the left side
v(u - f) = fu ← divide both sides by (u - f)
v = [tex]\frac{fu}{u-f}[/tex]
