A sporting goods store sells two types of bicycles, in two colors. The table
shows its sales over the last year.
Road bike
Mountain bike
Total
Silver
81
39
120
Black
54
26
80
Total
135
65
200
Are buying a road bike and buying a silver bike independent events?
A. Yes, because P(road bike) = 0.675 and P(road bike | silver) = 0.675.
B. No, because P(road bike) = 0.675 and P(road bike | silver) = 0.6.
C. Yes, because P(road bike) = 0.405 and P(road bike | silver) = 0.675.
O D. No, because P(road bike) = 0.675 and P(road bike | silver) = 0.675.
Answer:
Answer D
Step-by-step explanation:
120 + 81+ 39=240 silver bikes
80+54+26= 160 black bikes
Total 200 + 135 + 65= 400
240+ 160=400
Answer:
Answer is C
Step-by-step explanation:
ap3xxx
Which statement correctly compares -9 and 2?
Answer:
-9<2 is a correct comparison
Please answer quick.
Answer:
e
Step-by-step explanation:
BRANDI WANTS TO CALCULATE THE AVERAGE SPEED
OF A CAR THAT TRAVELED 275 MILES IN THREE
HOURS. WHICH FORMULA BELOW IS CORRECT?
A. S = 3 x 275
B. S = 3/275
C. S = 275/3
D. S = 3-275
MISTER SCIENCE
Answer:
C. S = 275/3
Step-by-step explanation:
The formula for speed is S = d/t
The d is = 275
The t is = 3
So S = 275/3
Hope this helps ya!!
Which is smaller, one-ninth of 54 or one-fourth of 36?
Answer:
one-ninth of 54
Step-by-step explanation
54*1/9=6
36*1/4=9
Answer:
1/9 of 54 is smaller than 1/4 of 36
Step-by-step explanation:
1/9 of 54 is 54/9 and that is 6
1/4 of 36 is 36/4 and that is 9.
Please mark brainliest
The amount of Jen’s monthly phone bill is normally distributed with a mean of $75 and a standard deviation of $8. What percentage of her phone bills are between $51 and $99?
A. 99.7%
B. 95%
C. 99.99%
D. 68%
Nineteen less than four times a number is greater than forty-seven.
Please i will give away all my points to the person that answers this in number form thanks
Answer: pretty sure it's the number you multiply by 4 is 17
Step-by-step explanation:
when you multiply 4 and 16 you'll get 64 then you subtract 19 and get 45 which is less than 47 so by reasoning if you were to multiply 4 and 17 you'll get 68 then you subtract 19 from 68 and you should get 49 ( you didn't include how much greater than 47 the number should be but the safest bet would be to use 17)
30 is 2/3 of what number
Answer:45
Step-by-step explanation:
Key Word:of
30*2/3 = 45
Answer:
Step-by-step explanation:
let the number be x.
then,
2/3 of x = 30
=> 2/3x = 30
=> x = 30 × 3/2
=> x = 45
so, the required number is 45 .
hope it helps...!!!
Cecilia packed a fruit basket for her new neighbors. If 20% of 30 pieces of fruit were bananas, what fraction of the fruit were bananas? Help!
Answer:
6/30
Step-by-step explanation:
20 percent of 30 is 6 ^_^
What is the predicted value of fuel efficiency (in miles per gallon) for a car with a 2.5 cubic liters engine? Round your answer to two decimals, if needed.
Answer:
25.92
Step-by-step explanation:
Fuel efficiency is the measure or effort that is required to convert the chemical energy in the fuel to the kinetic energy which the cars needs to move. It is meant by how good or effectively the fuel is utilized by the vehicle. It is the ability of the engine to extract more energy from the fuel.
In the context, the size of the engine is 2.5 cubic liters. Then the predicted value of the fuel efficiency will be 25.92 miles per gallon.
31.8 dived 0.58 answer
Answer:
54.8275862069
Step-by-step explanation:
If you want rounded than 54
Solve the equation.
x² + 6x+15=0
Answer:
x = -3 + i√6 and x = -3 - i√6
Step-by-step explanation:
Let's apply the "completing the square" method to find the roots of this equation.
Take half of the coefficient 6 of x, square it and add this result to x^2 + 6x. Then subtract the same quantity:
x^2 + 6x + 15 becomes
x^2 + 6x + 3^2 - 3^2 + 15 = 0
Rewriting the first three terms as the square of a binomial, we ge:
(x + 3)^2 - 9 + 15 = 0, which simplifies to:
(x + 3)^2 + 6 = 0, or (x + 3)^2 = -6
Taking the square root of both sides:
x + 3 = ±i√6
Then the two roots are complex:
x = -3 + i√6 and x = -3 - i√6
The graph y=f(x) is graphed below. What is the end behavior of f(x)?
Answer:
as x → -∞, y → ∞ and as x → ∞, y → -∞
Step-by-step explanation:
Just check the first quadrant of the given graph.
In the first quadrant, when x gets smaller, the value of y is increasing to positive infinity.
In other words, as x → -∞, y → ∞
Now, observe the behavior of the graph in the 4th quadrant.
In the 4th quadrant, when x gets larger, the value of y is decreasing to negative infinity.
In other words, as x → ∞, y → -∞
Therefore, the behavior of f(x):
as x → -∞, y → ∞ and as x → ∞, y → -∞
Therefore, option (C) is true.
The end behavior of a graph is defined as what is going on at the ends of each graph when the function approaches positive or negative infinity.
End behaviour of given graph is, x⇒ -∞ then y⇒∞ and x ⇒∞ then y⇒ -∞
Since, here a graph is attached.
From graph it is observed that, when x tends to negative side, graph is going to upward direction. and when x tends to positive side then graph is going to downward direction.
So, when x tends negative infinity then y tends to positive infinity.
when x tends to positive infinity then y tends to negative infinity.
Therefore, end behaviour of given graph are,
x⇒ -∞ then y⇒∞ and x ⇒∞ then y⇒ -∞
Learn more:
https://brainly.com/question/14962400
please help me with this please
( Mathematical sentences can describe real-world problems. Note the following inequalities and real-world problems. Write either the inequality or real-world problem that corresponds to the given information. Do not simplify any inequalities.
(a) Real-World Problem: Toy cars cost c dollars. Stan had $3. He purchased 3 toy cars with his money. Frank had $6. He purchased 8 toy cars with his money. After their purchases, Stan had more money than Frank
Inequality:
(b) Inequality: 3x + 2 < 2x + 10
Real-World Problem:
Answer:
Mathematical sentences can describe real-world problems. Note the following inequalities and real-world problems. Write either the inequality or real-world problem that corresponds to the given information. Do not simplify any inequalities.
(a) Real-World Problem: Toy cars cost c dollars. Stan had $3. He purchased 3 toy cars with his money. Frank had $6. He purchased 8 toy cars with his money. After their purchases, Stan had more money than Frank
Inequality:
(b) Inequality: 3x + 2 < 2x + 10
in general the value measured by the vertical axis is called the _____ variable
Answer:
Dependent
Step-by-step explanation:
in general the value measured by the vertical axis is called the DEPENDENT variable.
A flagpole casts a shadow that is 24 ft long at the same time you cast a shadow that is
4.5 ft long. If you are 6 ft tall, how tall is the flagpole?
Answer:
32 ft tall
Step-by-step explanation:
24 divided by 4.5 is 5.3 repeating. 6 times 5.3 is around 32
What is the slope of the graph of
4x + 3y = 15?
Answer:
-4/3
Step-by-step explanation:
y=mx+b
3y=-4x+15
y= -4/3 x +5
m is slope b is y intercept
Your school carnival charges $2 for admission and $.50 for
each game. You go to the carnival with $5.50. Write and solve
an inequality that represents the possible number of games
you can play. What is the maximum number of games you can
play?
Answer:
you give $2 for admission so that is $3.50 now you can ride 2 games per ride and the total will be riding 7 games
Goodd Luck!
llllllllllaa
Answer:
Step-by-step explanation:
Positive integers = 2 5 8 11 13 28
Negative integers = - 3 - 7 - 9 - 11
The integer that's troubling her the most is 0 because zero is defined as neither positive nor negative
Samira used the calculator to find 254.3 × 2.5. Which statement best describes her work? Samira is correct. Samira is incorrect. The calculator should not give an answer that includes a decimal point. Samira is incorrect. The correct answer should only be about twice as much as 254.3, and the number on the screen is much larger. Samira is incorrect. The answer on the screen is not large enough to be the correct answer.
Answer:
A samira is correct
Step-by-step explanation:
Because she did her own expression right, now she has to solve
Answer:
the answer is c
Step-by-step explanation:
I used a caculator
A market research company wishes to know how many energy drinks teenagers drink each week. They want to construct a 80% confidence interval with an error of no more than 0.08. A consultant has informed them that a previous study found the mean to be 7.3 energy drinks per week and found the standard deviation to be 0.7. What is the minimum sample size required to create the specified confidence interval
Answer: 126 samples
Step-by-step explanation:
Given that :
Standard deviation (σ) = 0.7
Mean (m) = 7.3
Error (E) = 0.08
α = 80%
The sample size n can be obtained using the relation :
n = [(Zcrit * standard deviation) / Error]^2
The Zcritical at 80% = 1.282
Hence,
n = ((1.282 * 0.7) / 0.08)^2
n = (0.8974 / 0.08)^2
n = 11.2175^2
n = 125.83230625
n = 126
What is the ordered pair that represents the solution to the system of equations shown below?
2x + y = 7
10x - 6y = 46
Ya'll hows this drawing that I made look I wored realky hard on it
Answer:
i LOVE ITTTTTTTTTTTTTTTTTTTTTTT
Step-by-step explanation:
Answer:
its cute
Step-by-step explanation:
have a nice day :)
Ariel bought 3 raffle tickets for $5. How many tickets could Ariel
buy for $15?
Answer:
9 raffle tickets
Step-by-step explanation:
Because 3 raffle tickets are $5
and to find out the number of tickets you can buy with $15 you have to
divide $15 by $5 which is 3
then multiply the 3 times 3 to get 9 raffle tickets
Have a great day, I hope this is helpful to you.
Answer:
9
Step-by-step explanation:
3=5 6=10 9=15
in 2017, the price of a Forever stamp from the United States Postal Service was $0.49. How many Forever stamps could be purchased for $30.38?
this is for fun type as many Christmas songs as you can below my fav will get brainiest you will get 10 points as well.
Answer:
"as many Christmas songs as you can below my fav will get brainliest you will get 10 points as well."
Step-by-step explanation:
I typed it.
Answer: um all I want for Christmas and jingle bells.
Step-by-step explanation: make me brainest
Would appreciate some help first to answer gets brainliest
How do I solve this?
Answer:
The answer is 7.5
Step-by-step explanation:
3x+18=9x−27
3x+18−9x=9x−27−9x
−6x+18=−27
−6x+18−18=−27−18
−6x=−45
−6x /−6 = −45 /−6
x = 15 /2 which is equal to 7.5 as a decimal.
What is the slope of line that passes through the points (-3, 5) and (0, -1).
Answer:
[tex]m=-2[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (-3, 5)
Point (0, -1)
Step 2: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m.
Substitute [SF]: [tex]m=\frac{-1-5}{0+3}[/tex]Subtract/Add: [tex]m=\frac{-6}{3}[/tex]Divide: [tex]m=-2[/tex]