Answer:
D.) -3x = 4y
Step-by-step explanation:
[tex] -3(-4) ≠ 4(-3) \\ \\ 12 ≠ -12[/tex]
I am joyous to assist you anytime.
The point (-4,-3) is not a solution to both Equation C: 2y-3x=6 and Equation D: -3x=4y. This is determined by substituting x with -4 and y with -3 in each equation and checking if the equation is balanced.
Explanation:To find which equation (-4,-3) is not a solution to, we substitute x with -4 and y with -3 into each equation, then see if both sides of the equation are equal.
For equation A: 5(-4) + 2(-3) equals -20 - 6, which is -26. So, (-4,-3) is a solution to this equation.For equation B: -3 equals 1 + (-4), which is -3. So, (-4,-3) is also a solution to this equation.For equation C: 2(-3) - 3(-4) equals -6 + 12, which equals 6. This equation does not equal 6. Therefore (-4,-3) is not a solution to this equation. For equation D: -3 equals 4*(-4), which is -16. This equation does not equal -16. So, (-4,-3) is also not a solution to this equation.So, (-4,-3) is not a solution to both Equation C: 2y-3x=6 and Equation D: -3x=4y.
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Describe a way to calculate 304-81 mentally by using reasoning other that the common subtraction algorithm. Then write a coherent sequence of equations that correspond to your reasoning
Answer:
The required way is shown above.
Step-by-step explanation:
Consider the provided calculation.
304 – 81 is very close to 304 – 100,
Now subtract 100 from 304 mentally, it will gives us 204
Now add 19 as we round 81 to 100.
204 + 19 = 223
So, the answer is 223.
Now write a coherent sequence of equations that correspond to your reasoning.
304 – 81 = 304 – (100 – 19)
= (304 – 100) + 19
= 204 + 19 = 223
Hence, the required way is shown above.
To subtract 81 from 304 mentally, round 81 to 80, subtract from 304 to get 224, and then add 1 to compensate for the rounding, giving a final answer of 225.
Explanation:To calculate 304-81 mentally, we can use the strategy of rounding and compensating. First, we can round 81 up to a number that is easier to subtract from 304, such as 80 or 100, and then we adjust the final result to account for the rounding. Here's how to think through it:
The coherent sequence of equations that correspond to this reasoning would be:
This mental math strategy involves rounding and compensation, which allows us to handle subtraction problems quickly without having to use the standard subtraction algorithm. Checking that the answer makes sense in the context of the original problem is a good practice to ensure accuracy.
3m-(7m+12)=2(m-3)solve this and show work
Answer:
[tex]m = - 1[/tex]
Step-by-step explanation:
[tex]3m - (7m + 12) = 2(m - 3)[/tex]
simplifying bracket first
[tex]3m - 7m - 12 = 2m - 6[/tex]
[tex] - 4m - 12 = 2m - 6[/tex]
grouping like terms
[tex] - 4m - 2m = - 6 + 12[/tex]
[tex] - 6m = 6[/tex]
dividing through by -6
[tex] \frac{ - 6m}{ - 6} = \frac{6}{ - 6} [/tex]
[tex]m = - 1[/tex]
Please I need help with 16-17
Answer:
first answer- zero point zero fourty nine thousdanths
Step-by-step explanation:
Find the slope of the line joining each pair of points. Then draw the line in a coordinate plane:
I(5, 2), J(5, −4)
I know this should be infinity or no solutions, but my homework site is marking both answers as wrong. I don't know what else it can be.
Answer:
Step-by-step explanation:
Here slope = (y2-y1)/(x2-x1)
Which comes out to be: (-4-2)/5-5 = -6/0 !!!
But we cannot divide by 0. So the slope is undefined. This is basically a vertical line. The "slope" of a vertical line. A vertical line has undefined slope because all points on the line have the same x-coordinate.
If your hw website is not accepting undefined as answer then what are the options that it provides?
Which two numbers are 4 units away from -1
The two numbers are 3 and -5. Let's start with 3. To get three, add 4 to -1. That means, going 4 to the right on a number line. When you do so, you will end up with 3. Since adding always go up.
Let's move onto -5 now. For this, go 4 to the left. Subtracting from negative numbers will be negative numbers. Since subtracting is going down, you go down on the number line.
Therefore, 3 and -5 is the answer!
Explaining channel:
Type HWsolver-Brainly. It should pop up at the bottom with a person thumbs up.
The two numbers that are 4 units away from -1 are -5 and 3.
What is a number line?In math, a number line can be defined as a straight line with numbers placed at equal intervals or segments along its length.
Now the given integer is, -1.
To find the numbers that are 4 units away we need to subtract and add 4 to get the required number.
So, 4 units forward from -1 is,
-1 + 4 = 3
And 4 units backward from -1 is,
-1 - 4 = -5
So the two numbers we get are 3 and -5.
Thus, the two numbers that are 4 units away from -1 are -5 and 3.
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There are 13 chickens and 9 roosters. What is the
ratio of chickens to roosters in lowest terms?
Answer:
13/9 or 1 4/9
Step-by-step explanation:
Miss Wheeler has 15 3/4 cups of flour in a container she uses one 1/4 cups of flour to make a loaf of bread how much flour does she have left
Answer: 15.5 or 15 1/2
Step-by-step explanation: becuz 15 3/4 - 1/4 = 15.5
(1 point) The histogram below gives the length of service of members of the Department of English at a particular university. The classes, in
years of service, are 0-4.9.5-9.9, etc., and the vertical axis represents the number of faculty
What percent of the department faculty have 5 or more years of service?
Answer
English Faculty
10
15
20
25
Years of Service
To find the percentage of faculty with 5 or more years of service, count the faculty with 5 or more years on the histogram, divide by the total faculty and multiply by 100.
Explanation:The task requires calculating the percentage of English department faculty with 5 or more years of service based on the data presented in the histogram.
Percentages
are calculated by dividing the part by the whole and multiplying by 100. We need to find the number of faculty members (y-axis) corresponding to service years of 5 and above (x-axis) and then calculate it as a percentage of the total faculty. Assume the total number of faculty is T and the number of faculty with 5 or more years of service is F, the percentage can be calculated as (F/T)*100. Please remember to count all the faculty in the histogram values starting from 5 years of service to the end. Ensure to consider these steps of data interpretation when dealing with histograms
.
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The 40% of the department faculty have 5 or more years of service.
To calculate the percentage of department faculty with 5 or more years of service, we can divide the number of faculty with 5 or more years of service by the total number of faculty and multiply by 100%.
% with 5 or more years of service = (number with 5 or more years of service) / (total number of faculty) * 100%
From the histogram, we can see that there are 10 faculty with 5 or more years of service and a total of 25 faculty in the department. Therefore, the percentage of department faculty with 5 or more years of service is:
% with 5 or more years of service = (10 faculty) / (25 faculty) * 100%
% with 5 or more years of service = 40%
Therefore, 40% of the department faculty have 5 or more years of service.
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A box contains 6 red balls, 7 yellow balls, and 2 green balls. All the balls are the same except for their color, Jaime picks a ball from the
box, records the color, then returns the ball to the box. He does this 3 times
What is the probability that all three balls that Jaime picked were red?
Answer:
The answer is 8/27
The probability that all three balls that Jaime picked were red is '0.064'
Now the box contains 6 red balls, 7 yellow balls, and 2 green balls
Thus the total number of balls in the box can be find by summing up all the balls in the box
Thus we get,
Total number of balls = 6 + 7 + 2 = 15 balls
Thus there are total of 15 balls in the box
Now Jamie picks a ball from the box, records the color, then returns the ball to the box.
Thus in the first try, the probability that the ball picked up is red:
Probability that the first ball picked is red = [tex]\frac{6}{15}[/tex]
where, '6' is the number of red balls
and '15' is the number of total balls in the box
Similarly as the ball picked up is again returned to the box the number of red balls and total number of balls won't change
Similarly probability that the second ball picked is red = [tex]\frac{6}{15}[/tex]
Similarly probability that the third ball picked is red = [tex]\frac{6}{15}[/tex]
Thus to find the combined probability we need to multiply all three probabilities
Thus probability that all three balls that Jaime picked were red is,
[tex]\frac{6}{15} *\frac{6}{15} *\frac{6}{15} = \frac{36}{225}* \frac{6}{15}\\ \frac{6}{15} *\frac{6}{15} *\frac{6}{15} =\frac{216}{3375}\\ \frac{6}{15} *\frac{6}{15} *\frac{6}{15} =0.064[/tex]
Thus '0.064' is our required answer
The perimeter of a rectangle is 38 in. The width
is 6 in. shorter than the length. Find the width
of the rectangle.
Good evening ,
______
Answer:
w=6.5in
___________________
Step-by-step explanation:
L : length
w : width
p : perimeter
38=2L+2w
38 =2(w+6)+2w
38 = 4w+12
38-12=4w
26=4w
26/4=w
w=6.5 in.
:)
how did you solve it and explain and what is the answer
Answer:
should be 3x^3+4 because all other choices don't make sense
Answer:
B
Step-by-step explanation:
(3x^2+4)*(x+1)
(3x^2+4)*x+(3x^2+1)*1
3x^3+4x+3x^2+1
3x^3+3x^2+4x+1
Find the nth term of this number sequence
1, 10, 19, 28, ...
Pls help
Answer:
9n - 8
Step-by-step explanation:
The sequence is arithmetic since the difference between consecutive terms is common
d = 10 - 1 = 19 - 10 = 28 - 19 = 9
The n th term of an arithmetic sequence is
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
here a₁ = 1 and d = 9, thus
[tex]a_{n}[/tex] = 1 + 9(n - 1) = 1 + 9n - 9 = 9n - 8, hence
[tex]a_{n}[/tex] = 9n - 8
We are required to find the nth term of the sequence 1, 10, 19, 28,....
The nth term of the sequence 1, 10, 19, 28, is 9n - 8
Given:
1, 10, 19, 28,
First term, a = 1
Common difference, d = difference between consecutive terms
10 - 1 = 9
19 - 10 = 9
28 - 19 = 9
nth term = a + (n - 1)d
nth term = 1 + (n - 1)9
= 1 + 9n - 9
= 9n - 8
Therefore, nth term of the sequence 1, 10, 19, 28, is 9n - 8
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The cost of renting a car is $25 per day plus a one-time fee
of $75.50 for insurance. How many days can the car be
rented if the total cost is to be no more than $525? Write
and solve an inequality to find the solution, and graph the
solution on a number line.
For $525 we can rent the car for 17 complete days.
What are inequalities and their types?Inequality is a relation that compares two numbers or other mathematical expressions in an unequal way.
The symbol a < b indicates that a is smaller than b.
When a > b is used, it indicates that a is bigger than b.
a is less than or equal to b when a notation like a ≤ b.
a is bigger or equal value of an is indicated by the notation a ≥ b.
Given, The cost of renting a car is $25 per day plus a one-time fee
of $75.50 for insurance.
Assuming the no. of days we can rent the car for $525 is x.
∴ 25x + 75.50 ≤ 525.
25x ≤ 449.5
x ≤ 449.5/25.
x ≤ 17.98 Or 17 complete days.
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10 POINTS
Find the distance between the points -6.4 and -9.2.
Show your work plz so I can understand it more
Evaluate the expression
2,322÷27
this will equal 86 is the anwer to question u have asked
Answer:86
Step-by-step explanation:
Step 1:Put 2,332 the (dividend) in the brackets,(in the box)
The divisor is 27 ,so it's outside of the brackets or outside of the box
Step 2:What is 232 into 27 , the reason I skipped 2 and 3 because there smaller than 27. 232 into 27 is 8 because it's closest to 232 which is 216 because 27*8 equals 216. 8 is now on top of the bracket and now you subtract 232-216 which is 16.
Step 3:Bring down 2 ,because 2 is the last number left.
Now we have to figure out what goes into 162
6 goes into 162 because 27*6=162
Step 4:Subtract 162-162=0
We stop because there's no more to go into unless it was a different number than 162 then we would of brung down the 0 because there's no more numbers after 2 and the number would of been a decimal but there's no more to go into.
6 down goes above the bracket next to 8 now we have an answer of 86.
So the quotient/answer=86
Manuel took 2 2/5
hours to clean the den. He took 1 1/3
hours to clean the bathroom. How much longer did it take Manuelt
clean the den?
It took Manuel approximately 1.07 hours longer to clean the den compared to the bathroom. This was calculated by converting the mixed numbers to improper fractions and subtracting.
Explanation:In this problem, we are comparing the time it took Manuel to clean the den and bathroom. To do this, we need to subtract. Firstly, you need to convert the mixed numbers, 2 2/5 hours and 1 1/3 hours, into improper fractions for ease. This would be 12/5 hours and 4/3 hours respectively. Now we subtract 4/3 from 12/5. You can use the least common denominator (LCD) to make this easier: 12/5 (which is 2.4 in decimal) minus 4/3 (which is 1.33 in decimal) equals approximately 1.07 hours. It means Manuel took 1.07 hours(approximately) longer to clean the den compared to the bathroom.
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whats the answer too -8(x + 4) -6x
Answer:
Step-by-step explanation:
-8(x + 4) -6x = -8 * x + (-8) * 4 - 6x
= -8x - 32 -6x
= -14x -32
The function f(x) = 5One-fifth is reflected over the y-axis. Which equations represent the reflected function? Select two options.
f(x) = One-fifth
f(x) = One-fifthOne-fifthOne-fifth
f(x) = 5One-fifth
f(x) = 5(5)x
f(x) = 5(5)–x
Answer:
The equations that represent the reflected function are
[tex]f(x)=5(\frac{1}{5})^{-x}[/tex]
[tex]f(x)=5(5)^{x}[/tex]
Step-by-step explanation:
The correct question in the attached figure
we have the function
[tex]f(x)=5(\frac{1}{5})^{x}[/tex]
we know that
A reflection across the y-axis interchanges positive x-values with negative x-values, swapping x and −x.
therefore
[tex]f(−x) = f(x).[/tex]
The reflection of the given function across the y-axis will be equal to
(Remember interchanges positive x-values with negative x-values)
[tex]f(x)=5(\frac{1}{5})^{-x}[/tex]
An equivalent form will be
[tex]f(x)=5(\frac{1}{5})^{(-1)(x)}=5[(\frac{1}{5})^{-1})]^{x}=5(5)^{x}[/tex]
therefore
The equations that represent the reflected function are
[tex]f(x)=5(\frac{1}{5})^{-x}[/tex]
[tex]f(x)=5(5)^{x}[/tex]
Answer:
c,d
Step-by-step explanation:
Marcie is playing a board game with a friend. She needs 20 points to win. She currently has -10 points. She wants to know the difference between the number of points she needs
Marcie needs 30 more points. 20-30=(-10)
What is the value of n in the equation –negative StartFraction one-half EndFraction left-parenthesis 2 n plus 4 right-parenthesis plus 6 equals negative 9 plus 4 left parenthesis 2 n plus 1 right-parenthesis.(2n + 4) + 6 = –9 + 4(2n + 1)? n =
The value of n in the equation is 1
Step-by-step explanation:
The equation is [tex]-\frac{1}{2}[/tex] (2n + 4) + 6 = -9 + 4(2n + 1)
At first we must do that:
1. Open the brackets in both sides
2. Add like terms
3. Solve to find n
L.H.S:
∵ [tex]-\frac{1}{2}[/tex] (2n + 4) + 6 = -n - 2 + 6
∴ [tex]-\frac{1}{2}[/tex] (2n + 4) + 6 = -n + 4
R.H.S:
∵ -9 + 4(2n + 1) = -9 + 8n + 4
∴ -9 + 4(2n + 1) = 8n - 5
∴ -n + 4 = 8n - 5
- Add 5 to both sides
∴ -n + 9 = 8n
- Add n to both sides
∴ 9 = 9n
- Divide both sides by 9
∴ n = 1
The value of n in the equation is 1
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ANSWER : The number one
Step-by-step explanation:
got it right
Evaluate −5(12)^3x for x = 1.
Answer:
x=3
Step-by-step explanation:
Answer: The answer is -8640.
Step-by-step explanation:You would first off by multiplying what's in the parenthesis by its exponent: (12)^3(1)= 1720. Then multiply 1728 by 5 so get your overall correct answer of -8640. Hope I helped you a lot and my answer is correct.!!
The capacity of the milk pitcher on the counter is 9/10 liter each one pitcher has3/8 of milk in it and the other pitcher has 5/12 of a liter milk in it much is there altogether?
Answer:
57/80L
Step-by-step explanation:
Given that the capacity (i.e maximum possible volume) of a pitcher is 9/10L
1st Pitcher is 3/8 full of milk
Hence Vol of milk in 1st pitcher = 9/10 x 3/8 = 27/80L
2nd Pitcher is 5/12 full of milk
Hence Vol of milk in 2nd pitcher = 9/10 x 5/12 = 3/8 = 30/80L
Total volume = 27/80 + 30/80 = 57/80L
Final answer:
Adding the milk from the two separate pitchers gives a total of 19/24 liters of milk together.
Explanation:
You are asking about a volume measurement related to liters, which indeed is a unit of capacity. One pitcher contains 3/8 of a liter of milk, and the other pitcher contains 5/12 of a liter. To find out how much milk is there altogether, we will simply add the volumes:
[tex]\(\frac{3}{8} + \frac{5}{12} = \frac{9}{24} + \frac{10}{24} = \frac{19}{24}\) liters[/tex]
To calculate this, we first find a common denominator, which is 24 (the least common multiple of 8 and 12). Then we convert each fraction to an equivalent fraction with a denominator of 24, before adding them together. So, the total amount of milk in both pitchers together is 19/24 liters.
2. Nine more than the opposite of a number is three less than twice the number. What is
the number?
Answer:
The number is 4
Step-by-step explanation:
* Lets revise some words in mathematics and how change them to
mathematical symbols
- More than ⇒ add (+)
- Less than ⇒ subtract (-)
- Twice ⇒ Multiplied by 2 (× 2)
- Opposite of a number ⇒ change its sign (additive inverse of it)
* Now lets solve the problem
- Nine more than the opposite of a number is three less than twice
the number
- Assume that the number is x
∴ 9 more than the opposite of x
- That means find the opposite of x and add it by 9
∵ The opposite of x is -x
∴ Nine more than the opposite of a number = -x + 9
- Three less than twice the number means 3 less than twice x
∵ The number is x
∴ Twice the number = 2 × x = 2x
∵ Three less than twice x = 2x - 3
∴ Three less than twice the number = 2x - 3
- The meaning of "is" between the two the statements is "="
∴ Nine more than the opposite of a number is three less than twice
the number is ⇒ -x + 9 = 2x - 3
* Lets solve the equation to find x
∵ -x + 9 = 2x - 3
- add x in both sides
∴ 9 = 3x - 3
- Add 3 to both sides
∴ 12 = 3x
- Divide both sides by 3
∴ x = 4
∵ x represents the number
∴ The number is 4
* Lets check the answer
9 more than opposite 4 is 3 less than twice 4
9 + (-4) = 2 × 4 - 3
9 - 4 = 8 - 3
5 = 5
The answer is right
Laura is looking for a way to save money this year on her medical expenses. Insurance is starting to get expensive, and her budget is tight. She figures that she has a 75% chance of needing to visit the doctor and get medication once in the winter, for a total of about $400. She also figures there should be some room in the budget for emergencies, so she estimates a 5% chance she will need to spend $300 at an emergency room.
Is it reasonable for Laura to set her medical budget at $300 for the year?
Answer: A
Step-by-step explanation: The expected value is over $300, so Laura will likely need more money to cover her expenses.
its not that hard
It's not reasonable for Laura to set her medical budget at $300 for the year. Considering her predicted medical expenses, her expected annual cost is $315, making her budget slightly understated.
Explanation:The answer to whether Laura's medical budget of $300 for the year is reasonable or not involves a concept in probability known as expected costs. Let's consider both events: there is a 75% chance of spending $400 and a 5% chance of spending $300.
We calculate the expected cost for both scenarios:
The expected cost for the doctor visit and medication is 0.75 * $400 = $300The expected cost for emergency spending is 0.05 * $300 = $15
Adding these costs, we find that her expected annual medical costs are $315, not $300. Therefore, Laura might need to reconsider her budget, possibly increasing it slightly.
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Henry is 4 years younger than Linda. Linda is 20 years old.
After correctly carrying out the Solve step of the five-step problem-solving plan, which solution should you arrive at to find Henry’s age?
28
24
16
12
Answer:
16
Step-by-step explanation:
20-4=16
pls give brainliest
28 - 6(2x + 4) = 124
Answer: x = -12 is the correct answer
Step-by-step explanation: the moderator that deleted this if is so wrong then just tell me why is wrong if you are so smart.
Explain how you can use multiplication to find the quotient 3/5 ÷ 3/15 then evaluate
To divide two fractions, multiply them by their reciprocals.
3/5 / 3/15
3/5 * 15/3
45/15
3
Using the properties of shapes, explain why all parallelograms are trapezoids.
Answer:
All parallelograms are trapezoids.
Step-by-step explanation:
A parallelogram has two pairs of parallel sides. A trapezoid has at least one pair of parallel sides. So if all parallelograms have two pairs, they are in the same category of the trapezoids.
Final answer:
A parallelogram is considered a trapezoid because it has at least one pair of parallel sides, which fits the basic definition of a trapezoid. Parallelograms have additional properties like equal opposite sides and angles, but these do not contradict the broader trapezoid classification.
Explanation:
Why All Parallelograms Are Trapezoids
A trapezoid is defined as a quadrilateral with at least one pair of parallel sides. A parallelogram, by definition, has two pairs of parallel sides. Therefore, since a parallelogram inherently possesses at least one pair of parallel sides, it meets the minimum criterion to be considered a trapezoid. This logical inclusion is based on the definition of shapes within geometry, and thus all parallelograms can be classified as trapezoids.
Properties of Parallelograms and Trapezoids
Parallelograms have some additional properties that trapezoids don't necessarily share, such as opposite sides being equal in length and opposite angles being equal. This does not, however, preclude them from the broader categorization of trapezoids because those extra properties do not contradict the definition of a trapezoid.
Applying similar triangles and their properties, although useful for understanding relationships between different shapes, is not directly necessary for explaining why parallelograms are trapezoids. Instead, it's the fundamental definitions of these shapes that establish the relationship between parallelograms and trapezoids. The Theorem 26 states that any triangle is always of equal area to a certain parallelogram having an equal base and half the altitude. While this theorem relates parallelograms to triangles, it does not affect the classification of parallelograms as trapezoids.
Connor is stuck in a traffic jam on a single-lane road. The traffic report tells him the traffic jam stretches for 5.5 miles. If Connor assumes each car is about 12.5 feet long, which calculation is most reasonable for Connor to use to find about how many cars are stuck in the traffic jam?
Connor can reasonably estimate that about 2323 cars are stuck in the traffic jam.
To find about how many cars are stuck in the traffic jam, Connor can divide the total length of the traffic jam by the length of each car.
Given:
- Length of traffic jam: 5.5 miles
- Length of each car: 12.5 feet
First, let's convert the length of the traffic jam from miles to feet since the length of each car is given in feet.
1 mile = 5280 feet
So, the length of the traffic jam in feet is:
[tex]\[ 5.5 \text{ miles} \times 5280 \text{ feet/mile} = 29040 \text{ feet} \][/tex]
Now, Connor can divide the total length of the traffic jam by the length of each car to find about how many cars are stuck:
[tex]\[ \frac{29040 \text{ feet}}{12.5 \text{ feet/car}} \approx 2323 \text{ cars} \][/tex]
What is 2 divided 5 over 7
Answer:
0.05714285714
Step-by-step explanation:
given:
2 divided 5 over 7
(2/5)/7
decimal value of 2/5 is 0.4
0.4/7=4/70=0.05714285714