Answers
Answer:
[tex]-2a^2-2a+11[/tex]
Step-by-step explanation:
To solve the question, use the given values of the variables and substitute them into the given expression.
We know that [tex]C = 2a^2-5[/tex] and [tex]D = 3-a[/tex]. With these values, we need to find [tex]2D-C[/tex]. So, substitute [tex]2a^2-5[/tex] for the [tex]C[/tex] and [tex]3-a[/tex] for the [tex]D[/tex] in that expression. Then, solve:
[tex]2D-C\\\\= 2(3-a)-(2a^2-5)\\= 6-2a-2a^2+5\\= -2a^2-2a+11[/tex]
Thus, [tex]2D-C[/tex] equals [tex]-2a^2-2a+11[/tex].
Related Questions
A consumer products company is formulating a new shampoo and is interested in foam height (in millimeters). Foam height is approximately normally distributed and has a standard deviation of 20 millimeters. The company wishes to test Upper H Subscript 0 Baseline colon mu equals 175 millimeters versus Upper H Subscript 1 Baseline colon mu greater-than 175 millimeters, using the results of n equals 4 samples. Calculate the P-value if the observed statistic is
Answers
Answer:
The p-value of the observed statistic is 0.15866
Step-by-step explanation:
The given parameters of the system are;
The standard deviation of the foam height, σ = 20 mm
The null hypothesis, H₀; μ = 175 mm
The alternative hypothesis, Hₐ; μ > 175 mm
The number of observations that make the sample, n = 4
The observed statistic, [tex]\overline x[/tex] = 185
The test statistic is given as follows;
[tex]Z=\dfrac{\bar{x}-\mu }{\dfrac{\sigma}{\sqrt{n}}}[/tex]
Therefore, we get;
[tex]Z=\dfrac{185-175 }{\dfrac{20}{\sqrt{4}}} = 1[/tex]
P(Z > 1) = 1 - P(Z < 1) = 1 - 0.84134 = 0.15866
The p-value of the observed statistic = 0.15866
Three friends played a target game at a carnival.
•Elsie hit the target 5 out of every 8 times.
•Anjani hit the target 60% of time.
•Derek hit the target 5/6 of the time.
Which list shows the friends in order from the person who hit the target the least percent of the time to the person who hit the target the greatest percent of the time?
Answers
Answer:
Step-by-step explanation:
It’s B trust me
Connie has to solve the following problem.
5 boxes of cereal costs $12.50. How much will 18 boxes cost.
Choose EVERY proportion Connie could use to solve this problem.
- 12.5/5 = 18/x
- 5/12.5 = 18/x
- 5/12.5 = x/18
- 5/18 =12.50/x
Answers
Answer: A
Step-by-step explanation:
Because to find if proportional you need to divide
In a certain city, the population mean commute time to work was reported as 30 minutes. The director of human resources for a certain company in the city claimed the mean commute time for the
company's employees was greater than 30 minutes. The director surveyed 35 randomly selected employees and found that their mean commute time was 31.4 minutes. With all conditions for
inference met, a hypothesis test conducted at the significance level a = 0.05 resulted in a p-value of 0.381
Which of the following is an appropriate conclusion?
Answers
Answer:
Answer.The director does not have convincing statistical evidence to conclude that the population mean commute time is greater than 30 minutes.
Because the p value is very high and higher than level of significance ,so we fail to reject null hypothesis.
PLEASE ANSWER QUESTION
Answers
Answer:
1.) y=-2x+4
2.) y=1x-1
Step-by-step explanation yw
is a 4(2x-3)<8(x+1) always ,sometime,or never true?
Answers
Answer:
Step-by-step explanation:
Step 1: Simplify both sides of the inequality.
8
x
−
12
<
8
x
+
8
Step 2: Subtract 8x from both sides.
8
x
−
12
−
8
x
<
8
x
+
8
−
8
x
−
12
<
8
Step 3: Add 12 to both sides.
−
12
+
12
<
8
+
12
0
<
20
X squared over 5 gives you what?
Answers
Answer:(x^(2))/(5)
Step-by-step explanation
Plzz help me
A.36
B.48
C.144
D.288
Answers
Answer:
D.288
Step-by-step explanation:
6×4×12
Multiply 6 and 4 to get 24.
24×12
Multiply 24 and 12 to get 288.
288
Use the drawing tools from the correct answer on the graph.
Plot function g on the graph.
g(x) = 6, -7 < x < -2
2, -2 < x < 3
-2, 3 < x < 8
Answers
The function g(x) is a discrete function. It is continuous between -7 to -2, -2 to 3, and 3 to 8. And the open circle at -7, -2, 3, and 8. And the jump of the g(x) is 4 units after every interval.
What is a function?The function is an expression, rule, or law that defines the relationship between one variable to another variable. Functions are ubiquitous in mathematics and are essential for formulating physical relationships.
[tex]g(x) = \left\{\begin{matrix} \ \ \ \ 6, -7 < x < -2\\\ \ \ 2, -2 < x < 3\\-2, 3 < x < 8\\\end{matrix}\right.[/tex]
The function g(x) is a discrete function. It is continuous between -7 to -2, -2 to 3, and 3 to 8. And the open circle at -7, -2, 3, and 8.
And the jump of the g(x) is 4 units after every interval.
The graph is shown below.
More about the function link is given below.
https://brainly.com/question/5245372
Answer:
Step-by-step explanation:
I got 100% on this test
Um... anyone know this?
Answers
Answer:
show more picture pls!
Step-by-step explanation:
Simplify each expression by combining like terms:
9m-7m+13
Please explain if you can
Answers
the answer is 2m+13
Suppose that in a certain country, 10% of the elderly people have diabetes (call this Event D). It is also known that 30% of the elderly people are living below poverty level (call this Event P), 35% of the elderly population falls into at least one of these categories, and 5% of the elderly population falls into both of these categories. If a randomly selected elderly person is living below the poverty level, what is the probability that she/he has diabetes
Answers
Answer:
0.1667 = 16.67% probability that she/he has diabetes
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Living below the poverty level.
Event B: Having diabetes.
30% of the elderly people are living below poverty level.
This means that [tex]P(A) = 0.3[/tex]
5% of the elderly population falls into both of these categories.
This means that [tex]P(A \cap B) = 0.05[/tex]
If a randomly selected elderly person is living below the poverty level, what is the probability that she/he has diabetes
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.05}{0.3} = 0.1667[/tex]
0.1667 = 16.67% probability that she/he has diabetes
Use long division to find the value of 1875 ÷ 15 THIS IS A DIVISON PROBLEM SINCE THE OTHER ONE I WROTE A MULTIPLICATION PROBLEM
Answers
The division is given below.
The quotient is 125 and the remainder is 0.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
1875 ÷ 15
This can be written as,
15 ) 1875 ( 125
15
37
30
75
75
0
Thus,
The quotient is 125 and the remainder is 0.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ2
Rewrite the expression using the fewest terms possible n ( 3 + 2) + 3n
Answers
Add 3 and 2 to get 5
n x 5 + 3n
n x 5 = 5n
5n + 3n = 8n
Which quadrilateral always has four sides of the same length?
isosceles trapezoid
parallelogram
square
rhombus
It’s multi choice
Answers
Answer:
square,rhombus,parallelogram, and i think thats it
Step-by-step explanation:
y=24-4x function table
Answers
Answer:
here
Step-by-step explanation:
Answer:
Step-by-step explanation:
a baker bought 12 pounds of flour.He used 5/6 of the flour how many pounds are left
Answers
Answer:
2 pounds are left.
Step-by-step explanation:
12 pounds divided into 6 parts (or sixths) = 2 pounds each. 5 of those 6ths were used, so 10 pounds used. 2 pounds are left.
Alternately, multiply 12 x 5 for your numerator = 60, divide by 5, your denominator, and get 10 pounds used.
Can y’all solve this please
Answers
Answer:
it = my but lol
Step-by-step explanation:
lol sorry just trying to get points
can you please help me with this question?
Answers
Answer:
I have made it in above picture
hope it helps
Bill invests $3000 in a bound fund with an interest rate of 9% per year. If bill does not withdraw any money, in how many years will his bond fund be worth $5000?
Answers
Answer:
around 5.93 years
Step-by-step explanation:
A=P(1 + r/n)^n(t)
5000=3000(1 + .09/1)^1(t)
amelia spent $5.25 for a drink and a sandwich or drink cost $1.35 did she have a turkey sandwhich for $4.22 a tuna sandwich for $3.92 or ham sandwich for $3.46 use the equation S +1.35=5.27 to justify your answer
Answers
Answer:
$3.46 or $3.92
Step-by-step explanation:
it has to be $3.46 because you have to remember that tax is included and it could cost more than what you are paying for the sandwich or drink. but the other possible answer is $3.92 if you're not paying any tax.
The area of a rectangular pool is given by the trinomial 2y^2-y-3. What are the possible dimensions of the pool? Use factoring.
Answers
Answer:
(2y−3)(y+1) hope this helps!
HELP SOON! Please!!!!
How does an outlier affect the mean of a population? The median? The range?
How can we adjust for the effects of outliers?
Answers
A new parking lot is being built for a medical office. The expression representing the number of parking spots in the new lot is StartFraction 15 x over 4 EndFraction minus 9, where x represents the number of parking spots in the first row. How many spots are in the parking lot if there are 32 parking spots in the first row?
79
88
111
129
Answers
Answer:
111
Step-by-step explanation:
A variable is a letter, for example x, y or z, that represents an unspecified number. To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12.
Answer:
C
Step-by-step explanation:
Whoever answers first will get marked Best!A cheetah runs 177 miles in 3 hours,at this rate how many hours will it take to travel 531 miles?
Answers
Answer:
9 hours
Step-by-step explanation:
brainliest plss???
PLEASE HELP ITS DUE IN 3 HOURSSS!!!
Answers
Answer:
the 3rd option because Imma fresh man bro
A sum amounted naira 2,590
at 10% Per annum for the
Period of 4 Years. Find the sum
Answers
Answer:
1,769
Step-by-step explanation:
The computation of the sum is shown below:
Future value = Present value × (1 + rate of interest)^number of years
2,590 = Present value × (1 + 0.10)^4
2,590 = Present value × 1.10^4
So, the present value is
= 2,590 ÷ 1.10^4
= 2,590 ÷ 1.4641
= 1,769
Dollhouse furnishing comes in different sizes depending on the size of the dollhouse. Write a ratio of the size of the dollhouse item to the size of the larger item.
dollhouse sofa: 112 in. long
real sofa: 6 ft long
Answers
Answer:
20ft
Step-by-step explanation:
The ratio of the size of the dollhouse item to the doll house is 14 : 9.
What are ratios?Ratio expresses the relationship between two or more numbers. It shows the frequency of the number of times that one value is contained within other value(s).
What are the ratios of the dollhouse item to the doll house ?First convert feet to inches
1 feet = 12 inches
12 x 6 = 72 inches
dollhouse item : doll house
112 : 72
14 : 9
To learn more about ratios, please check: https://brainly.com/question/25927869
15x-7=13x+3
(please help)
Answers
Answer:
the answer is x=5
Hope this helps :)
Write an equation to represent the hanger.
Explain how to reason to find the value of x.
Answers
Answer:
a big pastry stuffed with cheese
Step-by-step explanation:
Answer:
2x = 1
Step-by-step explanation: