Answer:
elsa's interval width will be greater than that of frank
Step-by-step explanation:
first of all we are told that both Elsa and Frank have the same sample proportion so their midpoint is also going to be the same.
now as the confidence level goes higher, so also would the margin of error increase. then the width of the confidence interval would rise so it can be more confident.
from this question elsa has a larger confidence level therefore her intervals width will be greater than franks own.
Rachel estimates the weight of her dog to be 50 pounds the actual weight of the dog is 52.5 pounds what is the percent error of Rachel’s estimate
Answer:
It is unidentified.
Step-by-step explanation:
Six out 8 teachers prefer expo markers to non bran markers. What is the ratio of teachers who do not prefer expo markers to those who do
Answer:
2 to 6
Step-by-step explanation:
If 6 teachers prefer expo markers then 6-8=2 then there are two teachers that don't prefer markers and 6 that do so the equals 2:6
Answer:
1:3
Step-by-step explanation:
What is an equation in point-slope form of the line that passes through (-7, 1) and (-3, 9)?
writing the linear equation can be used by any any of those coordinates that are given
y - y1 = m(x - x1)
m = Gradient
Making m the subject of the formulam = y - y1 / x - x1
Where:
(-7, 1) = (x, y)
(-3, 9) = (x1, y1)
Solving for mm = (1 - 9) /( -7 + 3)
m = -8/- 4
m = 2
Inputing this into our point slope form equation : y - y1 = m(x - x1)
We have:
y - 9 = 2(x + 3)
Therefore, Option D is the correct option
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What kind of lines are shown?
Answer:
vertical and horizontal
30 point question! WILL AWARD BRAINLIEST!
A ball is thrown across a playing field from a height of h = 5 ft above the ground at an angle of 45° to the horizontal at the speed of 20 ft/s. It can be deduced from physical principles that the path of the ball is modeled by the function
y = − (32/(20^2))x2 + x + 5
Find the horizontal distance the ball has traveled when it hits the ground. (Round your answer to one decimal place.)
Answer:
Answers are down below ;)
Step-by-step explanation:
y = − (32/(20^2))x2 + x + 5
Plug into the calculator: -32/20^2 = -.08x^2
Find the maximum height attained by the ball:
Rewrite the equation:
y= -.08x^2 + x +5
This parabola is a negative meaning that it will be maximum
to find the maximum we use the formula -b/2a
-(1)/ 2 (-.08) = -1/ -.16= 6.25
we plug 6.25 back into the equation y= -.08(6.25)^2+ (6.25) +5 = 8.125
The maximum height attained by the ball: 8.125 feet
Find the horizontal distance the ball has traveled when it hits the ground.
This can be found with the quadratic equation, x = [-b ± √(b2-4ac)]/2a
a= -.08 , -b= -1, c= 5 (When you are plugging in the numbers, make sure to break them down).
-(-1)± √(-1)^2-4(-.08)(5)] 2(-.08) -->
[-1 ± √(1 + 1.28)]/-.16 = [-1 ± √(2.6)]/-.16 = [-1 ± 1.61]/-.16 =
The horizontal distance of the ball is x = 16.31 feet
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A regression equation for this line is y = -0.42x + 19.26 a. What do the slope and y-intercept indicate? The slope indicates that the percent in 1985 should have been about 19%. The y-intercept indicates that the percent is falling at about 0.4% each year. b. The slope indicates that the percent is falling at about 0.4% each year. The y-intercept indicates the percent in 1985 should have been about 19%. The slope indicates tha the percent has remained the same for each year. The y-intercept indicates the percent in 1985 should have been 22%. d. There is not enough information to determine what the slope and y-intercept indicate.
Answer:
B.The slope indicates that the percent is falling at about 0.4% each year. The y-intercept indicates the percent in 1985 should have been about 19%.
Step-by-step explanation:
A regression equation is it this form:
Y' = b0 + b1X
I am going to identify the slope and intercept in this equation to help us go further in our solution.
b1X is the slope. The slope usually has an x value multiplied to it
b0 is the intercept.
Back to our question, the equation in this question is
Y = -0.42X + 19.26
The slope is -0.42X.
The y intercept is 19.26
The slope has a negative sign, this shows us that the percentage is falling by about 0.4% every year while an intercept of 19.26 tells us that percentage in 1985 should have been about 19%.
I hope you found my solution useful?
HELP PLEASE:(( I will give brainliest
Answer:
15
Step-by-step explanation:
what is the answer for 14x divided by 7x
Answer:
2x
Step-by-step explanation:
You're dividing 14 multiplied by a number by 7 multiplied by a number. So you'd get 2 multiplied by a number.
How can you use the order of operation to explain why you cannot combine the variable terms before using the distributive property when solving the equation 7(x+5)-x=42
Answer:
Step-by-step explanation:
The Order of Operations is very important when simplifying expressions and equations. The Order of Operations is a standard that defines the order in which you should simplify different operations such as addition, subtraction, multiplication and division.
This standard is critical to simplifying and solving different algebra problems. Without it, two different people may interpret an equation or expression in different ways and come up with different answers. The Order of Operations is shown below.
Parentheses and Brackets -- Simplify the inside of parentheses and brackets before you deal with the exponent (if any) of the set of parentheses or remove the parentheses.
Exponents -- Simplify the exponent of a number or of a set of parentheses before you multiply, divide, add, or subtract it.
Multiplication and Division -- Simplify multiplication and division in the order that they appear from left to right.
Addition and Subtraction -- Simplify addition and subtraction in the order that they appear from left to right.
Before we begin simplifying problems using the Order of Operations, let's examine how failure to use the Order of Operations can result in a wrong answer to a problem.
Without the Order of Operations one might decide to simplify the problem working left to right. He or she would add two and five to get seven, then multiply seven by x to get a final answer of 7x. Another person might decide to make the problem a little easier by multiplying first. He or she would have first multiplied 5 by x to get 5x and then found that you can't add 2 and 5x so his or her final answer would be 2 + 5x. Without a standard like the Order of Operations, a problem can be interpreted many different ways
We cannot combine the variable terms before using the distributive property when solving the equation as it will results in wrong answer.
What is distributive property of multiplication over addition ?
If we multiply a number by the sum of more than two, we use the distributive property of multiplication over addition.
Here the expression given is :
7(x+5)-x=42
The Order of Operations is very important when simplifying expressions and equations. The Order of Operations is a standard that defines the order in which you should simplify different operations such as addition, subtraction, multiplication and division.
Parentheses and Brackets -- Simplify the inside of parentheses and brackets before you deal with the exponent (if any) of the set of parentheses or remove the parentheses.
Exponents -- Simplify the exponent of a number or of a set of parentheses before you multiply, divide, add, or subtract it.
Multiplication and Division -- Simplify multiplication and division in the order that they appear from left to right.
Addition and Subtraction -- Simplify addition and subtraction in the order that they appear from left to right.
Without the Order of Operations one might decide to simplify the problem working left to right. He or she would add two and five to get seven, then multiply seven by x to get a final answer of 7x. Another person might decide to make the problem a little easier by multiplying first. He or she would have first multiplied 5 by x to get 5x and then found that you can't add 2 and 5x so his or her final answer would be 2 + 5x. Without a standard like the Order of Operations, a problem can be interpreted many different ways.
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Insurance withholding varies depending on whether an entire family is covered or only the employee is covered. True False
Answer:
it would True
Step-by-step explanation:
please help!!! thank you
Answer:
liseN iNn c1as
Step-by-step explanation:
Select all the expressions that equal -2 + 5. A -2 - (-5) B -2 - 5 C 5 - 2 D 5 + (-2)
Answer:
A
Step-by-step explanation:
What reference angle will you use to determine sin 330?
A.)30°
B.)45°
C.)60°
D.)0°
The circular opening of a vase has an inside diameter of 13.5 cm.
-13.5 c
What is the approximate area of this circular opening? (Use a = 3.14.)
Answer:
[tex]Area = 143cm^2[/tex]
Step-by-step explanation:
Given
Shape: Opening of a circular vase
[tex]Diameter =13.5cm[/tex]
[tex]\pi = 3.14[/tex]
Required
Determine the area
This opening implies a circle; hence the area will be calculated using area of a circle.
[tex]Area = \pi r^2[/tex]
Solve for radius (r)
[tex]r = \frac{d}{2}[/tex]
[tex]r = \frac{13.5\ cm}{2}[/tex]
[tex]r = 6.75\ cm[/tex]
Substitute 6.75 for r in [tex]Area = \pi r^2[/tex]
[tex]Area = 3.14 * 6.75^2[/tex]
[tex]Area = 143.06625[/tex]
[tex]Area = 143cm^2[/tex] --- Approximated
what is the product of -3 and 5
it's on engenuity so I need answer
Answer.........
-15
.______.
6+2(5×-3)=10 solve the equation?
Answer: The answer will be that x=1
Step-by-step explanation:Isolate the variable by dividing each side by factors that don't contain the variable. Hope this helps!
CAN SOMEONE HELP ME ASP!!
The profit function, P(x) , revenue function, R(x), and cost function, C(x), are related by the equation P(x)=R(x)-C(x) . Manuel has determined that the revenue and cost functions for a new product line at his business are given by these functions. R(x)=3x C(x)=600+2x. What is the profit function in standard form for Manuel's new product line
Answer:
P(x) = 5x - 600
Step-by-step explanation:
Given
Cost function C(x) = 600+2x
revenue function R(x) = 3x
If the profit function is related by the equation
P(x)=R(x)-C(x)
P(x)= 3x - (600-2x)
open the parenthesis
P(x) = 3x - 600 + 2x
P(x) = 3x+2x - 600
P(x) = 5x-600
Hence the profit function in standard form for Manuel's new product line is P(x) = 5x - 600
Ticket
Use the number 45,897,310.
Rearrange the digits in the number so that the 9 is worth
10 times as much.
EXPLAIN your thinking on the line below your angin
Answer:
The rearrangement can be 45, 987 , 310
Step-by-step explanation:
Here, we want to rearrange the number such that 9 is worth 10 times as what it is worth presently
The value of 9 presently is 90,000
So 10 times as worth will be 10 * 90,000 = 900,000
So we can have the new arrangement as;
45, 987, 310
4.9 • 10^4 - 8,200= ?
Answer:
40800
Step-by-step explanation:
Please help and i will brainliestttt
Answer:
7/3 cm per hour
Step-by-step explanation:
Answer: 7/3 or in decimal form 2.3 the three is repeating or in mixed number 2 1/3
Step-by-step explanation:
7 divided by 3= 3/3 or in decimal form 2.3 the three is repeating or in mixed number 2 1/3
7 is for how much snow fell and the 3 is from how much time
Starting with x=0.811, express x as a fraction in the simplest form
Show steps plz
Answer:
811/1000
Step-by-step explanation:
x =0.811
Step 1
Multiply both numerator and denominator by 1000
x = 0.811/1 × 1000/1000
= 811/1000
Therefore, x as a fraction in the simplest form is 811/1000
Solve the inequality for x:
8 + 4(x - 3) + 3x < 24
Answer:
7x - 4 < 24
Step-by-step explanation:
8 + 4x - 12 + 3x < 24
3x + 4x - 12 + 8 < 24
7x - 4 < 24
Hope this helps!
Have a nice day!
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Answer:
8 + 4x - 12 + 3x < 24
3x + 4x - 12 + 8 < 24
7x - 4 < 24
Step-by-step explanation:
Paula has a dog that weighs 3 times as much as Carla's dog. The total weight of the dogs is 68 pounds.
How much does Paula's dog weigh?
Use the diagram to find the weight of Paula's dog.
Carla's dog
Paula's dog
68 pounds
68 + 4 =
so Carla's dog weighs
pounds and Paula's dog weighs
pounds.
w
Answer:
51
Step-by-step explanation:
68/4=17
68-17=51
Answer:
Paula's dog weighs 51 pounds.
Carla's dog weighs 17 pounds.
17 times 3 equals 51.
Then 17 added to 51 equals to 68.
In the worst storm in Sunnyville history, 6 inches of rain fell in 8 hours. What was the amount of rainfall per
hour?
A: 1/2 of an inch
B: 3/4 of an inch
C: 1 1/2 inches
D : 2 inches
Answer:
B. 3/4
Step-by-step explanation:
6/8=0.75
Answer: B
Step-by-step explanation:
6 = 8
3 = 4
1.5 = 2
0.75 = 1
Hope this helps!
Calculate.
(2x105)(4.3x109)
Write your answer in scientific notation.
Answer:
9.8427x10⁴
Step-by-step explanation:
Answer:
98427x^2
9.8427x10^4
Step-by-step explanation:
Please put the following numbers in order largest to smallest: 19/50; 0.37; 40%
Answer:
19/50 40% 0.37
Step-by-step explanation:
19/50 = 0.38
0.37 = 0.37
40% = 0.40
40%, 19/50, 0.37
thanks who ever help
Answer:
Here's your answer! Let me know if you still need help?
What is 15,738 kilometers in miles rounded to the nearest whole number?
Answer:
16,000
Step-by-step explanation:
because 7 rounds it up to 16,000
The probabilities that stock A will rise in price is 0.42 and that stock B will rise in price is 0.58. Further, if stock B rises in price, the probability that stock A will also rise in price is 0.14. a. What is the probability that at least one of the stocks will rise in price? (Round your answer to 2 decimal places.)
Answer:
0.92
Step-by-step explanation:
a. What is the probability that at least one of the stocks will rise in price? (Round your answer to 2 decimal places.)
P(A) = 0.42
P(B) = 0.58
P(A|B) = 0.14
Step 1
P(A|B) × P(B) = 0.14 × 0.58
= 0.0812
The probability that at least one of the stocks will rise in price
P(A) + P(B) - 0.0812
0.42 + 0.58 - 0.0812
= 1 - 0.0812
= 0.9188
Approximately to 2 decimal place = 0.92
i need help on this really fast
Answer:
The correct answer is D. 37.975.
Step-by-step explanation:
