Question 5
On problem #18, which variable will be the easiest to isolate in order to solve the system using
substitution?
A: x, in the top equation
B: y. in the top equation
C: x, in the bottom equation
D: y, in the bottom equation
Can someone please please please help me!
Answers
Related Questions
Find the value of 9x-5 given that – 2x-3=5.
Simplify your answer as much as possible.
Answers
Answer:
The value of 9x - 5 is -41.
Step-by-step explanation:
-2x - 3 = 5
-2x = 5 + 3
-2x = 8
x = -4
9x - 5
= 9(-4) - 5
= -36 - 5
= -41
when computing the correlation​ coefficient, what is the effect of changing the order of the variables on​ r?
Answers
The correlation coefficient (r) measures the strength and direction of the linear relationship between two variables. The value of r ranges from -1 to +1, where a value of -1 indicates a perfect negative correlation, +1 indicates a perfect positive correlation, and 0 indicates no correlation.
The correlation coefficient's sign will not change when the order of the variables in a correlation study is changed, but the coefficient's numerical value might. This is due to the symmetry of the correlation coefficient with regard to the two variables under comparison.
For instance, if you calculate the correlation coefficient between X and Y and the result is r = 0.7, it indicates that Y tends to rise as X does. The correlation coefficient between the variables Y and X will have the same sign (+ or -) but a different numerical value if the variables are computed in a different order.
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Let f(x) equals 1/2 X -3. Suppose you subtract six from the input of f to create a new function G, and then multiply the input of the function G by four than three a function each. What will the equation represent H
Answers
The equation of the function f(x) is h(x) = 1/2(4x - 6) - 3
How to determine the equation of the function f(x)?From the question, we have the following equation that can be used in our computation:
f(x) = 1/2x -3
Also, we have the following steps used to create the function h(x)
Subtract six from the input of f to create a new function G, Multiply the input of the function g by fourWhen these steps are represented as an equation, we have the following representations
Subtract six from the input of f to create a new function G: g(x) = 1/2(x- 6) - 3Multiply the input of the function g by four: h(x) = 1/2(x * 4- 6) - 3In the above computations, we have
h(x) = 1/2(x * 4- 6) - 3
Evaluate the product
h(x) = 1/2(4x- 6) - 3
Hence, the equation is h(x) = 1/2(3x- 6) - 3
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For the piecewise function, find the values h(- 5), h(0), h(1), and h(4).
Answers
Answer:
h(-5) = 2h(0) = 1h(1) = 3h(4) = 6Step-by-step explanation:
You want the value of the piecewise function for various values of x.
Piecewise functionThe first step in evaluating a piecewise function is determining which domain is applicable to the value of x you have. Then you use the corresponding function, evaluating it in the usual way.
h(-5)For x = -5, the applicable domain is x < -3, so the function is ...
h(-5) = -4(-5) -18 = 20 -18
h(-5) = 2
h(0)For x = 0, the applicable domain is -3 ≤ x < 1, so the function is ...
h(0) = 1
h(1), h(4)For x = 1 or 4, the applicable domain is x ≥ 1, so the function is ...
h(1) = 1 +2 = 3
h(4) = 4 +2 = 6
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You spin the spinner 80 times. About how many times do you expect it will land on something other than A? Explain your reasoning.
Answers
Answer:
60%
Step-by-step explanation:
I hopes this helps.
PLEASE HELP QUICKLY!!! 15 POINTS AND BRAINLEST PROVIDED!!!
6x + 7 + (-2x) + 4
Joshua says the correct way to simplify this expression is 4x + 11. Vera says once you simplify the expression to 4x + 11, you then need to add so the correct answer is 7x. Who is correct and how do you know?
Answers
Answer:
Joshua is correct
Step-by-step explanation:
6x+7+(-2x)+4
6x+7-2x+4
4x+7+4
4x+11
Hopes this helps please mark brainliest
Answer:
Joshua, you can’t simplify/add because they aren’t like terms
Which numbers are Irrational? Select all that apply.
A. √36
B. √15
C. √64
D. √57
E. √8
Answers
Answer:
B, D and E.
Step-by-step explanation:
These numbers are irrational because their exact values can only be represented by those square roots. If you try to "do the maths", it will be something like:
\sqrt{15} = 3.872983...\\
\sqrt{57} = 7.549834...\\
\sqrt{8} = 2.828427...
Answer:
A,D and E and this is the correct answer
A number is called "bright" if it is 34 times larger than the sum of its digits. How many "bright" three-digit numbers are there?
A : 0
B : 1
C : 2
D : 3
E : 4
Answers
Step-by-step explanation:
Let the number be \(\overline{abc}=100a+10b+c\).
\(100a+10b+c=34a+34b+34c \\ \\ 66a-24b-33c=0 \\ \\ 22a-8b-11c=0\)
Taking the equation mod \(11\) yields \(-8b \equiv \pmod{11}\), meaning \(b=0\).
So, \(22a-11c=0 \implies c=2a\).
So, the only possibilites are \((a,c)=(1,2), (2,4),(3,6), (4,8)\).
Therefore, there are \(4\) such numbers.
Write an example from daily life that uses each type of real number.
rational numbers
Answers
Write an example from daily life that uses rational numbers .
Real numbers that may be expressed as p/q, where p, q are integers, and q 0, are rational numbers. The money we have is a rational number. If we spend some sum out of it, it is subtraction of rational number.The running race involves rational numbers if you're an athlete.Rational numbers include the following:the distance runthe time needed to complete the distance,the number of competitors placing first, second, or thirdthe number of heartbeats you take per minute.We use fractions to represent taxes.If you split a pizza or any other food.When you finish a piece of your work, you indicate that you have done half, or 50%.Loan and mortgage interest rates.Savings account interest.To learn more about rational numbers, refer:
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Question
Solve the system of linear equations by substitution.
y=x−4
y=4x−10
Answers
Answer:
x = 2, y = -2
Step-by-step explanation:
To solve by substitution, you first need an isolated variable in one equation. Luckily, y is isolated in both equations.
Because y = y, we can set the other sides of the equations equal to each other.
x - 4 = 4x - 10 [substitute]
The next step is to isolate and solve for x
x = 4x - 10 + 4
x - 4x = -6
-3x = -6
x = 2
Next, you substitute x into both equations.
y = (2) - 4
y = -2
y = 4(2) - 10
y = 8 - 10
y = -2
Because both equations work out to the same value, you have the correct answer.
Construct the simplest polynomial with integer coefficients with the given roots:
√5,7,-1
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PLEASE HELP ASAP
WILL MARK BRAINLIEST
Answers
Answer:
The price of the shirt is $7.50
The price of the pants is $18.50
Step-by-step explanation:
If you want to write something for your proof of work:
4x + 3x = 85.50
3 (4x + 3y ) = 3 (85.50)
12x + 9y = 256.50
12 × 7.50 = 90
9 × 18.50 = 166.50
ALSO for the last question:
12 × 7.50 = 90
20 × 18.50 = 370
370 + 90 = $460.00
Question:
Why do you think there is a limit on the number of times you can withdraw or transfer money in your savings accounts?
(PLEASE ANSWER IN YOUR OWN WORDS!)
Answers
Answer:
Step-by-step explanation:
The bank uses money deposited into savings and other accounts for investments and loans. They need to ensure that the money won’t be withdrawn so they have use of that money.
just designed a cloister (a rectangular garden surrounded by a covered walkway on all four sides). the outside dimensions of the garden are 12 feets by 8 feet, and the area of the garden and the walkway together are 252 square feet. what is the width of the walkway?
Answers
The width of the rectangular walkway is 3 feet around.
The walkway has a uniform width around the rectangle.
Let the width of walkway be x
The total length of the garden and walkway will be (12+2x) feet
The total width of the walkway and garden would be (8+2x) feet
Area of the garden and the walkway together are 252 square
Let’s express this mathematically:
(8+2x)(12+2x) = 252
Let’s open the brackets;
96+ 16x+ 24x + 4x^2 = 252
4x^2 + 40x + 96 = 252
4x^2 + 40x + 96-252 = 0
4x^2 + 40x - 156 = 0
Let’s divide all through by 10. We have;
x^2 + 10x -39 = 0
X^2 +13x-3x-39 = 0
x(x + 13) -3(x+ 13) = 0
(x-3)(x + 13) = 0
x -3 = 0 or x + 13 = 0
x = 3 or -13
We ignore x = -13 since width cannot be negative in size
Therefore, the width of the rectangular walkway is 3 feet around.
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Four years ago you invested some money at 10% interest. you now have $439.23 in the account. if the interest was compounded yearly, how much did you invest 4 years ago?
Answers
\(~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\dotfill & \$439.23\\ P=\textit{original amount deposited}\\ r=rate\to 10\%\to \frac{10}{100}\dotfill &0.1\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{yearly, thus once} \end{array}\dotfill &1\\ t=years\dotfill &4 \end{cases}\)
\(439.23=P\left(1+\frac{0.1}{1}\right)^{1\cdot 4}\implies 439.23=P(1.1)^4 \\\\\\ \cfrac{439.23}{1.1^4}=P\implies 399.3=P\)
A machine at a bakery is pouring out flour. The graph shows the amount of flour (in grams) in the machine versus time (in minutes).
Answers
Answer:
6
Step-by-step explanation:
7237 x 2 is 47
Yesterday, Jack drove 31 1/2 miles. He used 1 1/4 gallons of gasoline. What is the unit rate for miles per gallon.?
Answers
Answer:
25.2 miles per gallon
Step-by-step explanation:
the easiest way to solve would be to set this up as fractions
HELP PLEASE ILL GIVE BRAINLIST <3
Answers
Jessica plants a seed 3 1/2 inches below the ground. The plants grows from 15 3/4 inches . What is the height of the plant above ground?
Answers
Answer:
49/4 inches
Step-by-step explanation:
Inches below ground= 3 1/2 inches
Plant's full height=15 3/4 inches
Height above ground = 15 3/4 inches -3 1/2 inches
63/4 - 7/2
63-14/4
49/4 inches
A matched pairs experiment compares the taste of instant with fresh-brewed coffee. Each subject tastes two unmarked cups of coffee, one of each type, in random order and states which he or she prefers. Of the 60 subjects who participate in the study, 21 prefer the instant coffee. Let p be the probability that a randomly chosen subject prefers fresh-brewed coffee to instant coffee. (In practical terms, p is the proportion of the population who prefer fresh-brewed coffee.)
(a)
Test the claim that a majority of people prefer the taste of fresh-brewed coffee. Report the large-sample z statistic. (Round your answer to two decimal places.)
Answers
The given data is,A matched pairs experiment compares the taste of instant with fresh-brewed coffee. Each subject tastes two unmarked cups of coffee, one of each type, in random order and states which he or she prefers.
Of the 60 subjects who participate in the study, 21 prefer the instant coffee. We need to find the probability that a randomly chosen subject prefers fresh-brewed coffee to instant coffee, let's say p. The formula to calculate the proportion of the population is:
p = (n1 + n2) / (x1 + x2)n1 and n2 are the sample sizes of two categories and x1 and x2 are the number of favorable outcomes from the respective categories. Here, n1 = n2 = 60 and x1 = 39 (since 21 out of 60 prefer instant coffee, the remaining 39 must prefer fresh-brewed coffee).Now, p = (60 + 60) / (39 + 21) = 1.2. Since p is a probability, it must be between 0 and 1. But here, p is greater than 1, which is not possible. Therefore, there is an error in the given data and we cannot proceed with the calculation.
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help help help!! pleaseee
Answers
Answer:
b
Step-by-step explanation:
i dont know how to explain it lol but its b
with the options Givin I found the anserw was B
3x-2y=-4 can someone find the slope and y intercept for this? thank you.
Answers
Answer:
\(Slope:\frac{3}{2}\\y-intercept:2\)
Step-by-step explanation:
50 POINTS IF U ANSWER WITHIN 5 MIN AND BRAINLIEST!
Answers
Answer:
part a: 840 if she withdrew the first month down to 730 and the rate it decreases is 110 then it is 840
part b: 110every month she withdraws 55 dollars because 55 plus 55 is 110
so every 2 months she would have withdrawn 110 dollars
Step-by-step explanation:
--- Ensures items requested match item numbers on DA Form 3151-R
--- Loads and secures the ammunition
--- Placards the vehicle
Which of the following tasks does the unit personnel perform when receiving ammunition?
Answers
When receiving ammunition, unit personnel perform three tasks: ensuring items requested match item numbers on DA Form 3151-R, loading and securing the ammunition, and placarding the vehicle.
The first task performed by unit personnel when receiving ammunition is to ensure that the items requested match the item numbers on DA Form 3151-R. This form serves as a record of the types and quantities of ammunition being received. By comparing the requested items with the item numbers on the form, personnel ensure accuracy and prevent any discrepancies or errors in the delivery.
The second task involves the loading and securing of the ammunition. Unit personnel are responsible for safely and efficiently loading the ammunition onto the designated vehicle or storage area. This includes following proper handling procedures, using appropriate equipment, and adhering to safety protocols. The ammunition must be securely stored and arranged to prevent shifting or damage during transportation.
The final task is to placard the vehicle. Placarding involves visibly displaying the necessary warning signs or labels on the vehicle that indicate the presence of ammunition. This step is crucial for safety and compliance purposes, as it alerts other personnel and drivers to exercise caution when approaching or handling the vehicle. Clear and prominent placarding helps prevent accidents and ensures that everyone involved is aware of the potential hazards associated with transporting ammunition.
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five to the power x + 2 is equal to 1/25.find x?
Answers
Answer:
-4 is the value of x
Step-by-step explanation:
5^x+2 = 1/255^x+2 = 1/5×55^x+2 = 1/5²5^x+2 = 5^-2x+2 = -2x = -2-2x = -4question this visual representation shows the sets of real numbers. classify the number 4563. select all terms that are correct. natural whole integer rational irrational 4563 natural – 4563 whole – 4563 integer – 4563 rational – 4563 irrational – 4563
Answers
The correct classifications for the number 4563 are Natural, Whole, Integer, and Rational.
Based on the visual representation of sets of real numbers, the correct classifications for the number 4563 are:
- Natural number: 4563 (4563 is a positive whole number, so it is a natural number)
- Whole number: 4563 (4563 is a positive whole number, so it is also a whole number)
- Integer: 4563 (-4563 is not shown in the visual representation, but the integer category includes positive and negative whole numbers, so 4563 falls under this category)
- Rational number: 4563 (4563 can be expressed as the ratio of two integers, namely 4563/1, so it is a rational number)
The incorrect classifications are:
- Irrational number: -4563 (Irrational numbers cannot be expressed as a fraction or ratio of two integers, but -4563 is not shown in the visual representation, so we cannot make any conclusions about its classification as irrational based on the given information)
To summarize, the correct classifications for the number 4563 are Natural, Whole, Integer, and Rational.
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The complete question is:<Based on the visual representation and the classification of numbers, the correct classifications for the number 4563 are:
- Natural number (4563)
- Whole number (4563)
- Integer (4563)
- Rational number (4563)
However, the number 4563 is not classified as an irrational number or as a negative number (-4563) based on the given information.>
How many significant figures would this calculation have if it were completed: \[ (9.04-8.23+21.954+81.0) \times 3.1416 \]
A) 3 B)4 C)5 D)6
Answers
The calculation \((9.04-8.23+21.954+81.0) \times 3.1416\) would have 4 significant figures.
To determine the number of significant figures in a calculation, we follow the rules for significant figures:
1. Addition and subtraction: The result should have the same number of decimal places as the measurement with the fewest decimal places.
2. Multiplication and division: The result should have the same number of significant figures as the measurement with the fewest significant figures.
Let's break down the calculation step by step:
\(9.04-8.23+21.954+81.0\) yields \(104.764\).
Now, multiplying this result by \(3.1416\) gives \(329.5719744\).
The measurement with the fewest significant figures in the calculation is \(3.1416\), which has 5 significant figures.
According to the rule for multiplication and division, the result should have the same number of significant figures as the measurement with the fewest significant figures. Hence, the result, \(329.5719744\), will be rounded to 4 significant figures.
Therefore, the calculation \((9.04-8.23+21.954+81.0) \times 3.1416\) would have 4 significant figures.
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solve for x in triangle
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bc you find 180-125 bc it is a straight angle. You get 55 degrees. Then you add 65+55=120. 180-120=60 degrees. This is because every triangle must have a sum of angles that equals 180 degrees.
Hope this helps.
Which angle has a measure equal to the sum
of m_SQR and mzQRS?
O ZRSC
O LSRE
O ZDQS
O ZQSR
Answers
Answer:< RSC
Step-by-step explanation:
The angle has a measure equal to the sum of m <SQR and m <QRS is
m <RSC.
The correct option is A.
We have the information from which we can write
<SQR and < QRS are two interior angles of triangle QRS
Then, m<QSR = 180 - (sum of other 2 angles)
m<QSR = 180 - (m<SQR + m<QRS) (Angle sum property)
Also, m<RSC = 180 - m<QSR
Then <RSC = (m<SQR + m<QRS)
Thus, the ideal solution is A.
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write the segment addition posutlate for the poins described
Answers
Answer:
Segment Addition Postulate: 2 points A and C, a third point B lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC.
Step-by-step explanation:
Answer: Segment Addition Postulate: 2 points A and C, a third point B lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC.
hope this helped you kiddo.
Step-by-step explanation: