What is the perimeter of the rectangle shown?
Answer:
74
Step-by-step explanation:
Got It? Do these problemst
Solve each system of equation
1. y=x
y = 2x - 4
answer
10
6420
10
Make a number line and mark the points that represent the following values of x. 5x<12
Answer:
x=2.5
Step-by-step explanation:
5x<12 1. /5 on both sides
x= 2.5
Answer:
x<2.4
Step-by-step explanation:
5x < 12
x < 12/5
x < 2.4
On the number line, draw an arrow going towards left from 2.4, with an open circle at 2.4
Can anyone help? I need help, and fast!
Twelve different video games showing substance use were observed and the duration of times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the sample data to construct a 98% confidence interval estimate of o, the standard deviation of the duration times of game play. Assume that this sample was obtained from a population with a normal distribution.
4058, 4336, 4707, 3927, 4718, 4139
4789, 4982, 4096, 4066, 4567, 3801
The confidence interval estimate is ___
Using the t-distribution, as we have the standard deviation for the population, it is found that the confidence interval estimate is (4044.2, 4653.4).
What is a t-distribution confidence interval?The confidence interval is:
[tex]\overline{x} \pm t\frac{s}{\sqrt{n}}[/tex]
In which:
[tex]\overline{x}[/tex] is the sample mean.t is the critical value.n is the sample size.s is the standard deviation for the sample.The critical value, using a t-distribution calculator, for a two-tailed 98% confidence interval, with 12 - 1 = 11 df, is t = 2.7181.
As for the other parameters, they are given by:
[tex]\overline{x} = 4348.8, s = 388.2, n = 12[/tex]
Hence:
[tex]\overline{x} - t\frac{s}{\sqrt{n}} = 4348.8 - 2.7181\frac{388.2}{\sqrt{12}} = 4044.2[/tex]
[tex]\overline{x} + t\frac{s}{\sqrt{n}} = 4348.8 + 2.7181\frac{388.2}{\sqrt{12}} = 4653.4[/tex]
The confidence interval estimate is (4044.2, 4653.4).
To learn more about the t-distribution, you can check https://brainly.com/question/16162795
Does anyone know the answer to number 2?
Answer: answer is 19 !!
Step-by-step explanation:
in 20 years,
Paul will be half the square
of the he was 4
years ago. How old is Paul ? ( need start of equation )
Answer:
Step-by-step explanation:
i honesty dont know if so i would help
Lin bought 4 bags of apples. Each bag had the same number of apples. After eating 1 apple from each bag, she had 28 apples left.
Which diagram best represents the story? Explain why the diagram represents it.
What part of the story does x represent?
Describe how you would find the unknown amount in the story.
Answer:
1. C
2. X=8
3. The unknown number is what the bag of apples started out with
Step-by-step explanation:
PLEASE HELP! math is stressing me
Answer:
Sin theta= a/c
= 5/7.8
= 0.64
= 1
Step-by-step explanation:
Lets find the hypotenuse first by applying Pythagorean theorem.
a^2+b^2=c^2
(6)^2+(5)^2=c^2
36+25=c^2
61=c^2 (FIND SQUARE ROOT)
7.8=c
Sin theta= a/c
= 5/7.8
= 0.64
= 1
Cos theta= b/c
= 6/7.8
Tan theta= a/b
= 5/6
Insert three arithmetic means between -16 and 4.
Answer:
Three arithmetic means between -16 and 4 are : 20 , 10 and [tex]\frac{20}{3}[/tex]
Step-by-step explanation:
we have to find out three arithmetic means between -16 and 4
-16 , ____ , ____ , ____ 4
so , lets take the mean like this ,
-16 , -16+d , -16+2d ,-16+3d , 4
First mean -: -16 +d = 4
d= 4+16
d = 20
second mean -: -16 +2d = 4
2d= 4+16 = 20
d= [tex]\frac{20}{2}[/tex]
d= 10
third mean -: -16+3d = 4
3d = 20
d=[tex]\frac{20}{3}[/tex]
Therefore , all the three arithmetic means between -16 ad 4 are 10 , 20 and [tex]\frac{20}{3}[/tex] .
can you give me all of the answers using the following directions please.
Answer:
1234567890
Step-by-step explanation:
Answer:
1234567890
Step-by-step explanation:
Help please need answers asap
Answer:
letter C
Step-by-step explanation:
hope its help
carry on learning godblessPLEASE!!! HELP ME! WILL GIVE BRAINLIEST, THANKS, AND 5 STARS!!! PLEASE GIVE A SOUND EXPLANATION TOO!!!! YOU GET 50 POINTS!
Answer:
-8
Step-by-step explanation:
Vertex of function f(x)
From inspection of the graph, the vertex of f(x) is (2, 1)
Vertex of function g(x)
Given: [tex]g(x)=2x^2-8x+1[/tex]
Standard form of a parabola is [tex]y=ax^2+bx+c[/tex]
Vertex form of a parabola is [tex]y=a(x-h)^2+k[/tex]
(where (h, k) is the vertex)
To convert from standard to vertex form, complete the square.
Set the equation to zero:
[tex]\implies 2x^2-8x+1=0[/tex]
Add 7 to both sides:
[tex]\implies 2x^2-8x+8=7[/tex]
Factor out common term 2 on left side:
[tex]\implies 2(x^2-4x+4)=7[/tex]
Factor expression inside brackets:
[tex]\implies 2(x-2)^2=7[/tex]
Subtract 7 from both sides:
[tex]\implies 2(x-2)^2-7=0[/tex]
Therefore:
[tex]g(x)=2(x-2)^2-7[/tex]
So the vertex of g(x) is (2, -7)
Solution
y-value of the vertex of f(x) = 1
y-value of the vertex of g(x) = -7
y-value of vertex of f(x) subtracted from the y-value of the vertex of g(x):
-7 - 1 = -8
HURRY PLEASE!!
Solve: x= 2t + 3w for t
Solve the compound inequality: 3x+1<-5 or 2x-5>7
Answer:
[tex]\frac{x-3w}{2}[/tex] = t
x < -2
x > 6
Step-by-step explanation:
For the first equation, let's solve for t.
Subtract 3w from both sides of the equation.
x - 3w = 2t
Now divide by 2.
[tex]\frac{x-3w}{2}[/tex] = t
t is equal to [tex]\frac{x-3w}{2}[/tex].
For the first inequality, let's solve for x.
First, subtract 1 from both sides, then divide by 3. The result is:
x < -2.
For the second inequality:
First add 5 to both sides, then divide by 2. The result is:
x > 6.
The compound inequality is as follows:
Solutions can be true if x is less than -2, or greater than 6.
what rational
i neeed to know
8. What percentage of the revenue did our costs from defects take up?
4.
3. If 2(4x + 3) - 12 = 3x - 6, then what value of x makes
the equation true?
Answer with supporting work:
Answer:
x=0
Step-by-step explanation:
2(4x+3)-12=3x-6
distribute
8x+6-12=3x-6
8x-6=3x-6
8x-3x=-6+6
5x=0
x=0
Jaleesa bought two
notebooks for $8.75 each
and one computer bag for
$74.95. If sales tax was 7%,
what was the total cost of
Jaleesa's purchases?
DONT ANSWER IF U DONT KNOW !
Answer:
Notebooks= 8.75
computer bags=74.95
Amount with tax = Approximately 89.559
x^2-x-2=0 as a complete square
17. Carol and Cathy are each saving money for a vacation. Carol started with $25 and saves
$7.50 a week. Cathy started with $10 and saves $10 a week. When will they have saved
the same amount?
Answer:
6 weeks
Step-by-step explanation:
Let x represent the weeks
[tex]25=10+ (10x-7.5x = 2.5)[/tex]
[tex]25-10=2.5x = 15[/tex]
[tex]\frac{15}{2.5}=x \\(150/25)\\x=6[/tex]
Carol and Cathy will have same saved amount after 6 weeks.
What do you mean by algebraic expressions ?
Algebraic expression is an equation which consists of variables and the arithmetic operations such as division , multiplication , etc.
It is given that Carol started with $25 and saved per week an amount of $7.50 whereas Cathy started with $10 and saved per week amount of $10.
Let's assume that after x no. of weeks they will have same saved amount.
So , we can write an algebraic expression which is :
25 + (7.5 × x) = 10 + (10 × x)
Now , reordering the like terms we get :
10x - 7.5 x = 25 - 10
Simplifying this we get :
2.5 x = 15
or
x = 15 ÷2.5
or
x = 6 weeks
Therefore , Carol and Cathy will have same saved amount after 6 weeks.
Learn more about algebraic expressions here :
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A ten pound bag of apples for $33.49
one pound of apples
Answer:
3.349
Step-by-step explanation:
3^2 −(9−4)^3 help please
Answer:
Step-by-step explanation:
?
Jesus deposited $2000 into a new savings account that paid interest at an annual rate of 3% compounded continuously. If there were no other transactions, approximately how much money was in Jesus' account 6 years after he made the deposit?
What is the quotient? 987 ÷ 6 This model describes the division calculation. Start with the greatest multiple of 100 that can be multiplied by the divisor with going over the dividend. Enter a number in each box to correctly complete the model and quotient.
Answer:
164.5
Step-by-step explanation:
987/6
164.5
The Quotient when 987 is divided by 6 is 164.
What is the Quotient?The dividend is the number that is being divided, and the divisor is the number that is being divided. The quotient is the end result of division.
Since we need to find the quotient of 987 when it is divided by 6. Therefore, we can write the quotient as,
Quotient = 987 ÷ 6
= 987 / 6
= 164
Hence, When we divide 987 by the 6 we will get 164 as Quotient.
To know more about Quotient click on the link below:
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What would the equation be for this problem: What is the cost, "c" for a disc that is $13 plus $1.95 for shipping and handling when you buy "n" discs.
Answer:
Step-by-step explanation:
Two possible equations, depending on how you read the question.
1. Is there a shipping and handling per disc?
If so:
[tex]C = 13n + 1.95n[/tex]
2. Shipping and handling is only charged once?
If so:
[tex]C=13n+1.95[/tex]
Hi I need some help with this
Answer:
10
Step-by-step explanation:
Snow is falling steadily in Syracuse, New York. After 2 hours, 4 inches of snow has fallen
If it continues to snow at the same rate, how many inches of snow would you expect after 6.5 hours? If you get stuck, you can use the table to help.
Answer:
13
Step-by-step explanation:
2 hours = 4 inches
2/2 equals 1 hour
4/2 equals 2 inches
2 inches of snow per hour
6.5*2 is 13
you should expect 13 inches of snow in 6.5 hours
Explain why the condition a=/ 0 must be stated to ensure that y = ax2 + bx + c is a quadratic relation.
Answer:
a = 0 makes the equation a linear equation, not quadratic
Step-by-step explanation:
A polynomial expression is quadratic if and only if its highest degree is 2. If the coefficient of the squared term is zero, then the polynomial does not contain a term of degree 2, so is not a quadratic. The coefficient of the squared term must be non-zero.
Penelope went to the store to buy x pounds of broccoli for $1.10 per pound and y cans of soup for $2.50 each. In total, she spent less than $10. The inequality relating the purchases she made and the total purchase price is
1.10x + 2.50y < 10. Which are reasonable solutions for this situation? Check all that apply.
(–1, 4)
(0, 2)
(3, 2.5)
(2, 4)
(0.5, 3.78)
(1.5, 3)
Answer:
the 2nd and last options
Step-by-step explanation:
Answer:
B and F
Step-by-step explanation:
PLEASE help ME! There is a picture!
Answer:
A
Step-by-step explanation:
so times it by two because there's two friends. Divide the numerator by 2 which is one there's Ur answer or u could just divide it by two which is basically timing the denominator