04.01 mc y-2x=-1 and 2y-x=4 choose the correct graph of the given systems of equations
Answers
Answer:
1st one m=0
y= 0.49875311x / cm
No horizonal asymptotes
x= 1/2 + 2.005 mcy
2nd one is
slope 1/2
y intercept (0,2)
x y
-4 0
0 2
Step-by-step explanation:
for 2
starting point ay y 2 make a point
then rise over run
go up 1 and to the right 2 and point , then up 1 and to the right 2 and point
there is your graph
Related Questions
HELP ME PLEASE I NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
>
Step-by-step explanation:
|-4| = 4
-|4| = -4 as the absolute value is applied first, then the number becomes negative because of the minus sine.
Here’s another one.. so sorry if this confused you..
(Also I got this question wrong..)
Answers
Answer:
hmmm did you try 14?
I dunno.. I keep thinking since it has the eighth meaning 8. Do 20-8=13
the readability of a balance is the smallest increment that can be read on that balance. what is the readability of a double-pan torsion balance (in milligrams)
Answers
The readability of a double-pan torsion balance is typically very small, usually in the range of a few milligrams (mg). This is because the double-pan torsion balance is a highly sensitive instrument used to measure very small masses.
The readability of a double-pan torsion balance is determined by the sensitivity of the torsion spring which is used to measure the mass on the scale pans. The higher the sensitivity of the torsion spring, the higher the readability of the double-pan torsion balance. The readability of a double-pan torsion balance is typically in the range of 0.1 to 0.5 mg.
This allows the balance to measure very small increments with a high degree of accuracy and precision. The readability of a double-pan torsion balance is critical for accurate measurements of very small masses, such as in the pharmaceutical, chemical and food industries.
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Suppose that X is a random variable with mean 20 and standard deviation 4. Also suppose that Y is a random variable with mean 40 and standard deviation 7. Find the mean and the variance of the random variable Z for each of the following cases. Be sure to show your work.
(a) Z = 40 - 5X
(b) Z = 15X - 20
(c) Z = X + Y
(d) Z = X - Y
(e) Z = -2X + 3Y
Answers
(a) The mean of Z in case (a) is -60 and the variance is 400.
(b) The mean of Z in case (b) is 280 and the variance is 3600.
(c) The mean of Z in case (c) is 60 and the variance is 65.
(d) The mean of Z in case (d) is -20 and the variance is 65.
(e) The mean of Z in case (e) is 80 and the variance is 505.
To find the mean and variance of the random variable Z for each case, we can use the properties of means and variances.
(a) Z = 40 - 5X
Mean of Z:
E(Z) = E(40 - 5X) = 40 - 5E(X) = 40 - 5 * 20 = 40 - 100 = -60
Variance of Z:
Var(Z) = Var(40 - 5X) = Var(-5X) = (-5)² * Var(X) = 25 * Var(X) = 25 * (4)² = 25 * 16 = 400
Therefore, the mean of Z in case (a) is -60 and the variance is 400.
(b) Z = 15X - 20
Mean of Z:
E(Z) = E(15X - 20) = 15E(X) - 20 = 15 * 20 - 20 = 300 - 20 = 280
Variance of Z:
Var(Z) = Var(15X - 20) = Var(15X) = (15)² * Var(X) = 225 * Var(X) = 225 * (4)² = 225 * 16 = 3600
Therefore, the mean of Z in case (b) is 280 and the variance is 3600.
(c) Z = X + Y
Mean of Z:
E(Z) = E(X + Y) = E(X) + E(Y) = 20 + 40 = 60
Variance of Z:
Var(Z) = Var(X + Y) = Var(X) + Var(Y) = (4)² + (7)² = 16 + 49 = 65
Therefore, the mean of Z in case (c) is 60 and the variance is 65.
(d) Z = X - Y
Mean of Z:
E(Z) = E(X - Y) = E(X) - E(Y) = 20 - 40 = -20
Variance of Z:
Var(Z) = Var(X - Y) = Var(X) + Var(Y) = (4)² + (7)² = 16 + 49 = 65
Therefore, the mean of Z in case (d) is -20 and the variance is 65.
(e) Z = -2X + 3Y
Mean of Z:
E(Z) = E(-2X + 3Y) = -2E(X) + 3E(Y) = -2 * 20 + 3 * 40 = -40 + 120 = 80
Variance of Z:
Var(Z) = Var(-2X + 3Y) = (-2)² * Var(X) + (3)² * Var(Y) = 4 * 16 + 9 * 49 = 64 + 441 = 505
Therefore, the mean of Z in case (e) is 80 and the variance is 505.
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Hamid bought 4.5 pounds of strawberries. The total cost of the strawberries was $8.10. How much did each pound of strawberries cost?
$0.08
$0.18
$0.80
$1.80
Answers
Answer:
D) $1.80
Step-by-step explanation:
$1.80 per pound. It cost $1.80 per pound.
Question 2 Which is NOT the method that can be used to show congruency of two triangles? a) SSS b) ASA c) SAS d) SSA 0) None of the above Review Question3 ASATABFE by the HL method mZ AST 48 and m FEB 3x Find x.
Answers
Answer:
NO.2- SSA is not the method to show the congruency of two triangles.
what is the first quartile of this data set?
11,12,15,16,17,19,22,24,29,33,38
Answers
The first quartile of the given data set would be 15 which is The middle of the numbers from the beginning up.
What is the first quartile of the data set?When data points are organized in ascending order, the first quartile, or lower quartile, (Q1), is the value at which 25% of them are located.
The given data set is:
11,12,15,16,17,19,22,24,29,33,38
Since the number of elements in the data set is 11. As a result, the data are divided into two equal parts by the sixth term. The median of the data is 19.
The middle of the numbers from the beginning up to and including the first middle value: 11,12,15,16,17.
The middle value is 15.
Therefore, the first quartile of this data set would be 15.
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Need a response bias question. So i have a Statistics project where I need to interview people at my school with a certain response bias question. Can anyone come up with any ideas?? also using random assignment or sample?
Answers
Answer:
Response bias would be something where answers would be skewed one way or another because of the way you asked. So maybe ask something embarrassing for someone to admit, like asking random students if they pick their nose. Some people will answer truthfully as no, and the people who do will likely also say no because they do not want to tell you that.
Analia is a school district manager. Here are some details about two schools in her district for the last school year:
School A School B
Number of students 300030003000 400040004000
Number of teachers 190190190 380380380
Graduation rate 86\%86%86, percent 90\%90%90, percent
Budget per student \$10{,}500$10,500dollar sign, 10, comma, 500 \$10{,}000$10,000dollar sign, 10, comma, 000
% of students in sports club 62\%62%62, percent 68\%68%68, percent
Number of sports medals won 999 777
SAT average 120012001200 105010501050
SAT range (max-min) 900900900 700700700
Analia wants to know which school has higher academic achievements relative to the budget per student.
1) Analia thought of two different ways to define this quantity. Identify these two definitions among the following options.
Choose 2 answers:
Choose 2 answers:
(Choice A)
A
SAT average divided by budget per student
(Choice B)
B
Graduation rate divided by budget per student
(Choice C)
C
Number of sports medals won divided by budget per student
(Choice D)
D
Graduation rate divided by number of sports medals won
2) Determine which school has higher academic achievements relative to the budget per student, according to the two definitions. Did you get the same result for both definitions?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Yes. According to both definitions, School A has higher academic achievements relative to the budget per student.
(Choice B)
B
Yes. According to both definitions, School B has higher academic achievements relative to the budget per student.
(Choice C)
C
No. The definitions have opposite results.
Answers
Answer:
a and b
no the definitions have opposite results
Step-by-step explanation:
The midpoint of XY is (3,-5). Find the coordinates of point X. Y=(2.5,-6.5)
Answers
Answer:
x=(2,-5.3)
Step-by-step explanation:
Hope this helps
XYZ is a triangle in which XY = 11 centimeters and YZ = 15 centimeters. The length of XZ is in whole centimeters and is greater than 20 centimeters. What are the possible lengths of XZ?
Answers
Answer:
Possible lengths of \(XZ\) are \(21\,\,cm,22\,\,cm,23\,\,cm,24\,\,cm,25\,\,cm\)
Step-by-step explanation:
According to triangle inequality theorem,
length of one side is less than the sum of remaining two sides.
Also,
\(XY=11\,\,cm\\YZ=15\,\,cm\\XZ>20\,\,cm\)
Therefore,
\(20<XZ<15+11\\20<XZ<26\)
The length of \(XZ\) is in whole centimeters.
Therefore, possible lengths of \(XZ\) are \(21\,\,cm,22\,\,cm,23\,\,cm,24\,\,cm,25\,\,cm\)
Hannah has liabilities totaling $30,000 (excluding her mortgage of $100,000 ). Her net worth is $45,000. What is her debt-to-equity ratio? 0.75 0.45 0.67 1.30 1.00
Answers
Hannah's debt-to-equity ratio when her liabilities was $30,000 (excluding her mortgage of $100,000 ) and her net worth is $45,000 is 0.75.
Debt-to-equity ratio is a financial ratio that measures the proportion of total liabilities to shareholders' equity. To calculate the debt-to-equity ratio for Hannah, we need to first calculate her total liabilities and shareholders' equity.
We are given that Hannah has liabilities of $30,000 excluding her mortgage of $100,000. Therefore, her total liabilities are $30,000 + $100,000 = $130,000.
We are also given that her net worth is $45,000. The net worth is calculated by subtracting the total liabilities from the total assets. Therefore, the shareholders' equity is $45,000 + $130,000 = $175,000.
Now we can calculate the debt-to-equity ratio by dividing the total liabilities by the shareholders' equity.
Debt-to-equity ratio = Total liabilities / Shareholders' equity = $130,000 / $175,000 = 0.74 (rounded to two decimal places)
Therefore, Hannah's debt-to-equity ratio is 0.74, which is closest to option 0.75.
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John had 506 marbles. Alice gave him some more marbles. John then had a total of 1,550 marbles. How many marbles did Alice give John?
Answers
Answer:
1'044
Step-by-step explanation:
First you borrow one from the five from the zero and subtract six form the 10. Then you subtract normally.
Answer: 1,044
Step-by-step explanation: 1,550 - 506 = 1,044
The price of a computer after discount was $850. If the discount was 25%, what was the original price of the computer?
Answers
Answer:
21.25
Step-by-step explanation:
I just smart
PLEASE HELP!
Simplify.
x^2-3x-10/x+3/2x^2-7x-15/x^2-9
Answers
Answer:
3rd option, x^2-x-6/2x+3
The expression in the simplified form will be (x² - x - 6) / (2x + 3). Then the correct option is C.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
The expression is given below.
⇒ [(x² - 3x - 10) / (x + 3)] / [(2x² - 7x - 15) / (x² - 9)]
Simplify the expression, then we have
⇒ [(x² - 3x - 10) / (x + 3)] / [(2x² - 7x - 15) / (x² - 9)]
⇒ [(x² - 3x - 10) (x² - 3²)] / [(2x² - 7x - 15) (x + 3)]
⇒ [(x² - 5x + 2x - 10) (x - 3)(x + 3)] / [(2x² - 10x + 3x - 15) (x + 3)]
⇒ [(x - 5)(x + 2)(x - 3)] / [(2x + 3)(x - 5)]
⇒ [(x + 2)(x - 3)] / (2x + 3)
⇒ (x² - x - 6) / (2x + 3)
The expression in the simplified form will be (x² - x - 6) / (2x + 3). Then the correct option is C.
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At a wedding there were 40 people from gromms side and 56 people from bride's family at the wedding
find the ratio of the groom's family to the bride's family at the wedding
Answers
Answer:
5 : 7
Step-by-step explanation:
groom's side: 40
bride's side: 56
ratio groom to bride = 40/56 = 20/28 = 10/14 = 5/7
Answer: 5 : 7
Explanation- 50+56 Is 106. So 106- 10=96.
There is your answer 96.
I’m giving brainlest pls help meeee
Answers
Answer:
gggggjwjwkekdbfjfnnf
Answer:
B is the correct answer
Step-by-step explanation:
Hope it helped have a great day
Please help me I need to finish this :)
Answers
What is the TOTAL area of polygon
The total area is__________square centimeters.
Answers
Answer:
66
Step-by-step explanation:
Find the area of the rectangle, then add up the area of the triangle.
The area of the rectangle
= 5 × 12
= 60 cm²
The base of the triangle
= 12 - 9
= 3 cm
The height of the triangle
= 9 - 5
= 4 cm
The area of the triangle
= (3 × 4) ÷ 2
= 6 cm²
The total area of the figure
= 60 + 6
= 66 cm²
During the fall, the deli counter in a grocery store offers a rice blend made of wild rice costing
$6.45 per pound and long grain brown rice costing $3.95 per pound. Overall, the blend costs
$4.95 per pound. If an employee has already measured out 59 pounds of wild rice, how many
pounds of long grain brown rice should she add to make the blend?
Write your answer as a whole number or as a decimal rounded to the nearest tenth.
Answers
If an employee has already measured out 59 pounds of wild rice. The number of pounds of long grain brown rice should she add to make the blend is: 88.5 pounds of long grain.
Number of pounds of long grainLet x represent number of pounds of long grain
6.45×59+3.95x=(59+x)×4.95
380.55+3.95x =292.05+4.95x
380.55–x =292.05
-x=292.05-380.55
-x = -88.5
x = 88.5 pounds of long grain
OR
6.45×59+3.95x=(59+x)×4.95
x=(6.45-4.95)×59
x=1.5×59
x=88.5 pounds of long grain
Therefore If an employee has already measured out 59 pounds of wild rice. The number of pounds of long grain brown rice should she add to make the blend is: 88.5 pounds of long grain.
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solve for x 5x+7=91-17
Answers
Answer:
x = 67/5
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to RightAlgebra I
Equality Properties
Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of EqualityTerms/Coefficients
Step-by-step explanation:
Step 1: Define
Identify.
5x + 7 = 91 - 17
Step 2: Solve for x
[Order of Operations] Simplify: 5x + 7 = 74[Subtraction Property of Equality] Subtract 7 on both sides: 5x = 67[Division Property of Equality] Divide 5 on both sides: x = 67/5Who answered the most questions correctly
Answers
to factorize the following algebraic expression: 3x² + 6x + 4x + 8 Provide a three-step guide on how to factorize the expression.
Answers
Answer:
Check below:
Step-by-step explanation:
To factorize the algebraic expression 3x² + 6x + 4x + 8, you can follow these three steps:
Step 1: Grouping
Group the terms in pairs so that you can factor out a common factor from each pair.
3x² + 6x + 4x + 8
(3x² + 6x) + (4x + 8)
Step 2: Factoring out the common factors
Factor out the common factors from each pair separately.
3x(x + 2) + 4(x + 2)
Step 3: Factoring out the common factor from the resulting expression
Notice that we have a common factor, (x + 2), in both terms.
(x + 2)(3x + 4)
Therefore, the factored form of the expression 3x² + 6x + 4x + 8 is (x + 2)(3x + 4).
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A triangle has sides with lengths of 4 meters, 5 meters, and 7 meters. Is it a right triangle?
Answers
Two shortest sides are legs (a and b) and the longest side is hypotenuse (c)
16 + 25 = 41
Square root of 41 is NOT 7
In the rainforest of Puerto Rico, I needed to measure the height of a really tall tree. I used a device to measure the angle of elevation from my line of sight to the top of a tree to be 31°. Find the height of the tree if my height is 6 feet and I was 275 feet from the tree
Answers
Answer:
Step-by-step explanation:
See image
3. The line segment drawn from a vertex of the triangle to the mid-point of the opposite
side is called
a) altitude
b) median
c) centroid
Answers
x-3(x-2)=3(2x) Solution
Answers
Step-by-step explanation:
x^2-2x-3x+6=6x
x^2-5x+6=6x
x^2+6=6x+5x
x^2+6=13x
x^2-13x=6
x(x-13)=6
x-7= -3(x+1) over 5
What is x?
Answers
5x-35=-3x-3
Add 3x and 35 to each side
5x + 3x = -3 + 35
8x = 32
Divide both by 8
X = 4
Factor the common factor out of each expression: 18u^2v^5-27uv^5+54uv^4
Answers
Answer:
9uv⁴
Step-by-step explanation:
9uv⁴(2v-3v+6)
Answer:
Factor out 9uv^4 from the expression
9uv^4(2uv - 3v + 6)
If you need more steps just ask :)
x² + y² +16y + 40 = 8x + 4y; center
Answers
To find the center of the given equation, we need to rewrite it in the standard form of a circle equation, which is:
\(\sf\:(x - h)^2 + (y - k)^2 = r^2 \\\)
where (h, k) represents the center coordinates of the circle and r represents the radius.
Given equation:
\(\sf\: x^2 + y^2 + 16y + 40 = 8x + 4y \\\)
Rearranging the terms:
\(\sf\:x^2 - 8x + y^2 + 16y - 4y = -40 \\\)
Completing the square for the x-terms:
\(\sf\: (x^2 - 8x + 16) + y^2 + 12y - 4y = -40 + 16 \\\)
Completing the square for the y-terms:
\(\sf\: (x^2 - 8x + 16) + (y^2 + 12y + 36) = -40 + 16 + 36 \\\)
Simplifying:
\( \sf\:(x - 4)^2 + (y + 6)^2 = 12 \\\)
Comparing this with the standard form, we can see that the center of the circle is at (4, -6).
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Answer: center is 8,5
Step-by-step explanation: i dont have one