Answer:
6
Step-by-step explanation:
PLEASE HELP
Mrs. Ameldo's class has 5 students with blue eyes, 7 with brown eyes, 4 with hazel eyes, and 4 with green eyes.
Two students are selected at random. Find each probability.
HINT: These events are DEPENDENT
a) Probability of selecting a green-eyed student, and then a brown-eyed student = ___
1. 11/20
2. 7/100
3. 7/95
4. 7/10
b) P(two blue) = ___
1. 1/20
2. 5/20
3. 1/19
4. 2/5
Be sure to reduce your fractions!
(Remember, once a blue-eyed student is picked, there will be ONE LESS blue-eyed student and ONE LESS student in total.)
PART 2
a) P(hazel then blue) = ___
1. 1/19
2/ 7/380
3. 1/20
4. 1/2
b) P(brown then blue) = ___
1. 7/80
2. 7/76
3. 3/5
4. 1/4
Answer:
please mark my answer as brainliest:
7/100, 1/19
1/20, 7/80
Step-by-step explanation:
firstly, figure out the total amount of students:
5+7+4+4=20
remember that dependant variables means you have to multiply the values
a)
figure out probability of choosing a green eyed student:
4/20
figure out probability of choosing a brown eyed student:
7/20
multiply values:
4/20 x 7/20 = 7/100
b)
probability of choosing a blue eyed student:
5/20 = 1/4
probability of choosing another blue eyed student:
4/19 (bc theres 1 less)
multiply:
1/4 x 4/19= 1/19
PART 2
a)
probability of choosing a hazel eyed student:
4/20
probability of choosing a blue eyed student:
5/20 = 1/4
multiply:
4/20 x 1/4 = 4/80= 1/20
b)
probability of choosing a brown eyed student:
7/20
probability of choosing a blue eyed student:
5/20 = 1/4
multiply:
7/20 x 1/4 = 7/80
PLZ HELP ME!!! NO LINKS PLZ!!!!!!
The results of a survey of students' favorite food are organized in the frequency table below. What is the sum of all of the relative frequencies for all types of food?
Food Preferred Frequency
Pizza 10
Hamburger 6
Spaghetti 1
Hotdog 5
Taco 4
*THE ANSWER IS NOT 26*
Select one:
a. 0
b. 100
c. 1
Answer:
100
Step-by-step explanation:
because it seems right
Answer:
C. 1
Step-by-step explanation:
The sum of relative frequencies in a distribution always equals 1
which set of sides will NOT make a triangle?
12cm, 7cm, 5cm
2cm, 3c, 4cm
11cm, 13cm, 3cm
19cm, 14cm, 7cm
PLZ HELP!
Use the parabola tool to graph the quadratic function f(x)=-x^2+4
Graph the parabola by first plotting its vertex and then plotting a second point on the parbola.
Answer:
vertex and x= -b/2a = 0
second point, when x=1, y=3
third point the mirror of the second point over the vertex
Step-by-step explanation:
Do as described
In a right triangle, a and b are the lengths of the legs and c is the length of the hypotenuse. Of a = 7 miles and b = 3 miles, what is the perimeter? If necessary, round to the nearest tenth.
Answer:
17.6 miles.
Step-by-step explanation:
Use Pythagoreans Theorem to find c.
a^2+b^2=c^2
49 + 9 = c^2
58 =c^2
√58=c
7.6=c
Now add all of your sides together to find the perimeter.
7 + 3 + 7.6 = 17.6 miles.
The perimeter of the triangle is 17.6 units.
What is the Pythagorean theorem?The Pythagorean theorem says that the sum of the square of the perpendicular and the base will be equal to the square of the hypotenuse of the right-angle triangle.
Using the Pythagorean theorem, we can find the length of the hypotenuse c:
c² = a² + b²
c² = 7² + 3²
c² = 58
c = √58 ≈ 7.6 miles
The perimeter is the sum of the three sides:
Perimeter = a + b + c
Perimeter = 7 + 3 + 7.6
Perimeter ≈ 17.6 miles
To know more about the Pythagorean theorem follow
https://brainly.com/question/31615311
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Kim has a rope that is meter long, she wants to cut it into 5 places, Each piece must be the same size.
How long will each piece of rope be?
Answer:
1/5 meter per piece
Step-by-step explanation:
Divide this 1-meter-long rope by 5:
1 meter
--------------- = 1/5 meter per piece, or 200 mm
5 pieces
james ran 1 mile in 8 minutes in the morning and 3.5 miles in 28 minutes in the evening
cool, what's the question?
Please help! Struggling with this a bit
Answer:
Rate of change= 9 Starting amount= 65
The equation would be y= 9x + 65
After 9 months, he would have 146 vreels
For the graph, put the points (0, 65) (2, 83) and (4, 101)
HELP ME SOLVE THIS PLEASE You paid $600 for a new guitar. Your guitar cost $40 more than twice the cost of your friend's guitar. How much did your friend's guitar cost?
Answer:
520??
Step-by-step explanation:
600-80=520??
educated guess.
please I've been looking for an answer to this question
Answer:
x = 9cm
using sine rule
a/sine(A) = b/sine(B)
a= x; A= 64° ( alternating angles)
b= 10 cm ; B = 90°
x/sine(64) = 10/sine(90)
x= {10 × sin(64)}/ sin 90
x = 9cm
Answer:
650
Step-by-step explanation:
what is the range of the given data above?
a.26
b.28
c.30
d.34
what is the width of tye class interval of the given data above
a.4
b.5
c.6
d.7
The range of the given data is 34.
The width of the class interval in the given data is 4.
What is the range?
Range is the difference between the highest and lowest values of a set of observations
Range =Upper-class boundary of the highest interval – Lower class boundary of the lowest interval
79 - 45 = 34
What is the class width?
The class width is the difference between the upper bound and lower bound.
Class width : 49 - 45 = 4
To learn more about range, please check: https://brainly.com/question/12372689
At the aquarium, posters of sharks cost $2 and posters of jellyfish cost $6. Mr. Benson spent $64 to buy 12 posters. How many of each type of poster did Mr. Benson buy?
Answer:
8
Step-by-step explanation:
Step 1: Add the cost of the posters together
Shark: 1 = $2
Jellyfish: 1 = $6
2 + 6 = 8
Step 2: Divide the result by the total amount Mr. Benson spent
64 ÷ 8
[tex]= \frac{64}{8}[/tex]
[tex]= 8[/tex]
Therefore, Mr. Benson bought 8 of each type of poster.
Two employees of Frontier Fence Company can install 100 feet of fence in two days. Help a. What is the unit rate for one employee? b. Write a proportion to show the relationship between this rate and 150 feet of fence. c. At this same rate, how many employees are needed to install 150 feet of fence in one day? -2020 CPM Educational Program. All rights reserved.
Answer:25/day
Step-by-step explanation:
HELP I WILL GIVE BRAINIEST
Which of the following equations is represented by the figure?
Which of the following is equal to 2?
A. 6 + 4 ÷ (2 + 1) × 3
B. (6 + 4 ÷ 2) – 1 × 3
C. 6 + (4 ÷ 2) + 1 × 3
D. (6 + 4) ÷ 2 – 1 × 3
Answer:
D
Step-by-step explanation:
Start with the values inside parentheses.
6 + 4 = 10
10 / 2 = 5
Then subtract 1*3.
5 - 3 = 2
*B is incorrect because according to order of operations, 4/2 should be calculated before adding 6.
what is the answer to y= 4x + 11
Answer:
x=-11/4
Step-by-step explanation:
4x+11 x=4 hope this helps
3. A class rolled number cubes. Their results are shown in the table. What is the experimental probability of rolling the number 1? Round your answer to the nearest tenth.
17.2%
16.4%
15.7%
17.5%
Answer:
15.7%
Step-by-step explanation:
Experimental probability is the probability of something that is determined by doing an experiment.
To find the probability, divide the number of rolling a one and add all the occurrences of every other result.
So,
42 / (42 + 44 + 45 + 44 + 47 + 46) =
42 / 268 =
0.156716 =
15.6716
Rounded to the nearest tenth, the probability of rolling a one would be 15.7%.
Find the volume. I need answer answer ASAP
Answer:
[tex]A=448[/tex]
Step-by-step explanation:
To find the volume of the given figure, one must multiply the lengths of all sides together. Therefore, set up an equation and solve,
[tex]V = (l)(w)(h)[/tex]
(V) indicates volume, (l) indicates the length of the base, and (h) indicates the height of the figure.
Substitute,
[tex]V=(8)(14)(4)[/tex]
Solve,
[tex]A=448[/tex]
Which function is represented in this graph?
f(x) = |x + 5| − 1
f(x) = |x + 1| − 5
f(x) = |x − 1| − 5
f(x) = |x − 5| − 1
Answer:
the first one
Step-by-step explanation:
f(x) = |x+5| -1
At the electronics emporium, 10 CDs are on sale. Marie can only afford to buy 3 CDs. How many combinations of CDs are possible?
Answer:
120 combinations of CDs are possible
Step-by-step explanation:
The total combinations could be
[tex]10C_3[/tex]
[tex]\frac{10*9*8*7!}{7!*3!}[/tex]
On further expanding, we get -
[tex]\frac{10*9*8}{3!} \\\frac{10*9*8}{3*2*1} \\= 10*3*4\\= 120[/tex]
Hence, 120 combinations of CDs are possible
a boy kicks a 0.445kg soccer ball with the force of 75 newtons what is the acceleration of the soccer ball
Answer:
168.5 m/s^2
Step-by-step explanation:
in a bag, there are 5 red marbles, 2 blue marbles and 3 purple marbles. what is the probability of drawing a purple marble
Answer:
The probability of drawing a purple marble is 3/10
please help me I’m not sure if I’m right lol :)!!!!
Answer:
You are correct :)
Step-by-step explanation:
Area of a circle = π * r2
R = 39
So 39 squared is 1521.
1521 times pi is 4775.94
Answer:
You are correct! The answer is 4775.94 in^2
Step-by-step explanation:
πr^2 or π(39)^2
help please and thanks
Answer:
28km
Step-by-step explanation:
Pythogreom therom
Answer: use p h o t o m a t h
Step-by-step explanation:
pls help i need this done very soon :
Find the volume (show work)
V = 1/3 × base × height
V = 1/3 × ( 8 × 8 ) × 7
V = 1/3 × 64 × 7
V = 448/3
V = 149.33333
V = 149.3
Barbara says that the expression
6 - 3y + 4 + 2y is equivalent to the expression
5y + 10. Is Barbara correct?
Answer:
No she is wrong.
Step-by-step explanation:
Let's simplify step-by-step.
6−3y+4+2y
=6+−3y+4+2y
Combine Like Terms:
=6+−3y+4+2y
=(−3y+2y)+(6+4)
=−y+10
Answer:
=−y+10
A line passes through the point (12,0) and is parallel to the line with the equation y = 1∕6x + 1. What's the equation of the line?
Answer:
y=1/6x-6
Step-by-step explanation:
The first step is to set up the equation. Since the lines are parallel the slopes will be the same.
Note: y=mx+b; m is the slope and b is the y-intercept
Since we know that the slopes are the same all we have to do is plug in (12,0) in the equation to find b (y-intercept),
0=1/6(12)+b
0=6+b
-6=b
Now that we know b all we have to do is put it in the formula y=mx+b
y=1/6x-6.
Answer:
y = (1/6)x - 2
Step-by-step explanation:
"Parallel" means "has the same slope as..." so the slope of the line you want is 1/6.
y = (1/6)x + b where b is the y-intercept (now, find it using the point (12, 0) ).
0 = (1/6)(12) + b
0 = 2 + b
b = -2
The equation is y = (1/6)x - 2
Jessica made 6 19/20 cups of punch. Her punch had two different types of juices in it. If the lunch had 4 1/5 cups of one type of juice, how many cups of the other type of juice did it have?
Answer:
2 3/4 cups
Step-by-step explanation:
Jessica made 6 19/20 cups of punch. Her punch had two different types of juices in it. If the lunch had 4 1/5 cups of one type of juice, how many cups of the other type of juice did it have?
We solve this question using the Subtraction operation
Total cups = cups of first type of juice + cup of other type of juice
6 19/20 = 4 1/5 cups + x
x = 6 19/20 - 4 1/5 cups
Lowest Common Denominator = 20
x = 6 - 4 + (19/20 - 1/5)
x = 2 + (19 - 4/20)
x = 2 15/20 cups
x = 2 3/4 cups
Other type of juice had 2 3/4 cups of juice