x + 3y = -2
=> x = -2-3y ----iAlso 5x -3y = 26
=> 5 (-2-3y) -3y =26
=> -10 -15y -3y =26
=> -18y = 36
=> y = -2Putting y = -2 in equation i we get,
x= -2 -3(-2)
=> x = -2 +6
=> x = 4Thus The solution is (4, -2)Answer:
(4, -2)
Step-by-step explanation:
Please be sure to share ALL of the instructions. Here you meant "Solve the following set of simultaneous equations and present your solution in (x, y) form."
Note that the first equation features +3y and that the second features 5x - 3y = 26. Simply adding like terms results in our having eliminated the variable y:
6x = 24
Then x = 24/6 = 4
The x coordinate of the solution is 4; Substituting 4 for y in the first equation results in
4 + 3y = -2
which simplifies to 3y = -6. Thus, y = -2, and the solution is
(4, -2)
Round 9.17302 to the nearest thousandths, tenths, and nearest unit.
Answer:
i think its 17000 and 170000
Step-by-step explanation:
Answer:
Thousandths: 9.173
Tenths: 9.2
Nearest Unit: 9
Hope this helps :D
Dillon decided to construct a rectangular deck in his back yard. It is 16 feet long and 13 feet wide. He is trying to determine whether he should construct the deck using cedar or a pressure treated material.
The cedar costs $21.09 per square foot for materials.
The pressure treated material costs $18.90 per square foot for materials.
The cost for labor will be the same for either material.
How much money would Dillon save installing a deck with pressure treated material instead of cedar? Explain or show your reasoning. You may use diagrams, drawings, or equations as well as words.
Answer:
Step-by-step explanation:
d for yearsd for yearsd for yearsd for yearsd for yearsd for yearsd for yearsd for years
4 + x more than -12
Please help ;-;
Answer:
any number more than 0 including 0
Step-by-step explanation:
Answer:
It's 0,
Step-by-step explanation:
Why because 12 is less then if your were going to create a line and 0 is going to be in the middle, that shows in that case 12 is going to be on the left side of the 0 because 12 is a positive number and 0 is not.
A small, test batch of lemonade used 1/4 cup of sugar added to 1 cup of water and 1/4 cup of lemon juice. After confirming it tasted good, a larger batch is going to be made with the same ratios using 10 cups of water. How much sugar should be added so that the large batch tastes the same as the test batch?
Hint: there is extra information in this.
Answer:
2 1/2 cups of sugar
Step-by-step explanation:
Answer:
2.5 or cups of sugar
Step-by-step explanation:
Since the problem multiplied the water by ten, to keep the ratio even we multiply everything else by ten. 1/4*10= 2.5 We do not need the information about the lemon juice since we are trying to figure out the amount of sugar.
The original quantity is 20 and the new quantity is 15. Adam incorrectly says the percent decrease is about 14.29%. What is the correct percent decrease? What error did Adam likely make when finding the percent decrease? The correct percent decrease is 25 25%. What error did Adam likely make? A. divided the difference of the two quantities by the sum of the two quantities. B. divided the difference of the two quantities by the product of the two quantities. C. divided the difference of the two quantities by the new quantity. D. divided the new quantity by the original quantity.
Answer: A. divided the difference of the two quantities by the sum of the two quantities.
===================================================
Explanation:
The difference of the quantities is 20-15 = 5
The sum of the quantities is 20+15 = 35
Dividing those results leads to 5/35 = 0.142857 which rounds to 0.1429
That converts to 14.29%
This is likely the path Adam took. This path is incorrect. The correct steps are shown below
---------------------
Difference = 20-15 = 5
Divide the difference over the original quantity
5/20 = 1/4 = 0.25 = 25%
We have a 25% decrease because the new quantity (15) is smaller than the old quantity (20)
----------------------
Here's another way to approach the problem
A = old value = 20
B = new value = 15
C = percent change
C = [ (B-A)/A ] * 100%
C = [ (15-20)/20 ] * 100%
C = (-5/20)*100%
C = -0.25*100%
C = -25%
The negative C value means we have a negative percent change, ie we have a percent decrease. So this is another way to get a 25% decrease.
The temperature at a mountain base camp was −3 degrees Celsius on Monday. Tuesday morning, the temperature was 2 degrees Celsius lower than what it was on Monday. By Tuesday evening, the temperature was 4 degrees Celsius lower than what it was that morning. What was the temperature at the base camp Tuesday evening?
−9 degrees Celsius
−6 degrees Celsius
−5 degrees Celsius
−1 degree Celsius
Answer: -9 degrees Celsius
Step-by-step explanation: You subtract two degrees from -3 and get -5 (-3-2=-5). Then, you subtract 4 degrees from -5 and get the answer of -9 degrees Celsius.
These two triangles are scaled copies of one another. The area of the smaller triangle is 9 square units. What is the area of the larger triangle? Explain or show how you know please.
Answer:
The area of the larger is 36 units^2
Step-by-step explanation:
The scale factor is 6/3 = 2
When we work with areas, it is scale factor squared
scale factor ^2 = area of larger / area of smaller
2^2 = area of larger / 9
4 =area of larger / 9
Multiply each side by 9
4*9 = 36
The area of the larger is 36 units^2
Bilk is driving on a freeway to visit his friend.
He has been driving at a constant speed for
the last hour. If Birk is traveling at a speed of
60 miles per hour, which equation best
represents the relationship between time in
hours, t, and the distance in miles, d?
A d = 60t
B t = 600
c d = t + 60
D t = d + 60
Answer:
The answer is a i believe
Step-by-step explanation:
At a movie theater, the ratio of filled seats to empty seats is 6 : 5. There are
120 empty seats. How many seats are filled?
5 pounds of grapes cost $7. How much would it cost to buy 1 pound of grapes? (show your work)
A. $0.70
B.$1.25
C.$1.40
D.$1.50
Answer:
the answer would be c based on the proportional value
Answer:1.25
Step-by-step explanation:because tbh id ont know the work but my teacher showed me this
Lamar puts 3 cantaloupes that each weigh 2 pounds onto a scale. He adds 3 bunches of bananas that each have the same weight to the scale. If the total weight of the fruit is 18 pounds, what is the weight of one bunch of bananas? Write the equation and solve for the unknown.
4 is the weight of one bunch 6X4=18.
Yo can someone help me out
Answer:
Your answer is 3,947 ÷ 45 = 87 r 32
Hope this Helps
<3
Select all the correct answers.
Aisle 2 of a furniture store stocks 4-legged chairs, 4-legged tables, and 3-legged stools. If there are t tables, c chairs, and s stools, which expressions show the total number of furniture legs in aisle 2?
4t + 4c + 3s
4t + 4c + 4s
4(t + c) + 3s
4(t + c + s)
t + c + s
t + c + 3s
Answer:
4c + 4t + 3s = total number of legs
Step-by-step explanation:
A construction worker has a rope that is 4 feet long.He needs to cut it into pieces that are each 2/3ft long.How many such pieces can he cut without having amy rope leftover?
Answer:
6
Step-by-step explanation:
4 / 2/3
Think of it like this.
4 / 2/3 (if this were in fraction form)
4 * 3/2 (Reciprocal)
12/2
6
The variable y varies directly with the variable x.
A 2-column table with 3 rows. Column 1 is labeled x with entries 2, 10, 14. Column 2 is labeled y with entries 3, 15, blank.
If the value of x is 14, what is the value of y?
Answer:
I think the answer might be 21 (add half of the number to the number) but it might be incorrect
Step-by-step explanation:
Answer:
The answer is 21
Step-by-step explanation:
I just took the quiz. for this question lets take the first example 2-3 if you take half of 2 which is 1 then add 2 its 3 and for the next one 10-15 if you take half of 10 which is 5 then add 10 its 15 and then finally 14-? if you take half of 14 which is 7 then add 14 its 21 hope this helps
4=6-2m
help me babes!
Answer:
tbh idek bro good luck.... its 33
Jackson receives 4.63 as his change at the grocery store. He places it into a charity donation jar at the register.
Write an addition equation to represent Jackson's net change in money.
Enter your answer as an addition equation, formatted like this: 42+(-53)=-11
Do not enter the dollar sign. Do not enter any units. Do not use spaces.
Answer:
M+4.63=T
Step-by-step explanation:
M represents the amount that he spent on his groceries. T is total
The addition equation to represent Jackson's net change in money is x + (-y) = 4.63.
What is an arithmetic operation?It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.
It is given that:
Jackson receives 4.63 as his change at the grocery store. He places it into a charity donation jar at the register.
Let x be the initial amount before purchase
Let y be the cost of the item purchased
Initial amount + cost of the item purchased = change received
The addition equation to represent Jackson's net change in money is:
x + (-y) = 4.63
Here y is with the negative sign because it is incurred
The change received = 4.63
Thus, the addition equation to represent Jackson's net change in money is x + (-y) = 4.63.
Learn more about the arithmetic operation here:
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Mr. Davis has displayed data boxes using box and whisker plots representing the scores on the first exam in his two calculus classes. Using these plots, what can Mr Davis correctly deduce about how the scores of the two classes compare?
A biker rides for h hours at a speed of s miles per hour and travels d miles. Which equation models the relationship?
A)h equals s d
B)d equals s h
C)h equals s over d
D)d equals h over s
Answer:
B
Step-by-step explanation:
help plzzzzzzzzzzzzzz giveing brainlist
Answer: A
Step-by-step explanation: the answer would be a Ptolemy III ruled over a kingdom of peace and Ptolemy XIV over saw the development of beautiful architecture.
i know this because i have studies on this in the past and did a question just like that and got it correct. hope this helps oh and maybe try giving me brainlest.
What does c = 331t and t = (1/100)c equal?
Answer:
c = 331t c = 100t
Step-by-step explanation:
Hope this helps.
Norma bought a plastic bag that contains 100 balloons. The label on the bag says that there are 20 each of blue, yellow, red, green, and orange balloons. Norma will take one balloon from the bag at random. What is the probability that the balloon will be either red or blue?
A)3/2
B)2/3
C)3/5
D)2/5
Answer:
d
Step-by-step explanation:
ur welcome plz mark brainliest
2/5 t is the probability that the balloon will be either red or blue.
Thus option A is correct.
What is probability?The mathematical discipline known as probability specializes in determining the possibility of an event occurring. Probability, which expresses the probability of a risk, is calculated by dividing the total possible combinations by the frequency of favorable events. Composite reliabilities vary from 0 to 1, with 1 representing certainty and 0 representing hesitation.
The probability of the event will be taken as
The fact that the data of red and blue will have a chance of occurring in the event
The first draw chance would be 20/100 = 1/5
The second draw would be 20/100 = 1/5
P = 20 / 100 + 20 / 100
P = 1/5 + 1/5
P = 2/5
Therefore, option D is the correct option.
Learn more about probability, Here:
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A bicycle shop advertised all mountain bikes priced at 1/3 discount.
a. What is the amount of the discount if the bicycle originally costs $327 ?
b. What is the discount price of the bicycle? Explain how you came up with your answer.
Please explain
I will mark Brainly and this is worth 42 points
Answer:
a. 109$
b. 327/3= 109
you're welcome
Solve:
10c + 20 = 40
c =
Use the model to solve for x.
Please help me I will give out extra points and the brain thing.
Answer:
x = 7/3
Step-by-step explanation:
3x - 2 =5
Add 2 to each side
3x-2+2 = 5+2
3x = 7
Divide by 3
3x/3 = 7/3
x = 7/3
Answer:
x = 7/3
Step-by-step explanation:
So there's 3 x's, two -1s and 5 +1s.
3x + (2 * -1) = (5 * 1)
Multiply 2 times -1 and 5 times 1.
3x - 2 = 5
Add 2 to both sides (to cancel out the minus 2.)
3x - 2 + 2 = 5 + 2
3x - 0 = 7
3x = 7
Now, divide both sides by 3 to get the x by itself (so you end up with x = something).
(3x)/3 = 7/3
3/3 simplifies to 1 so you end up with:
x = 7/3
Please mark as Brainliest! :)
Julie figures that she will need at least 540 Marks (German money) to get the items she wants when visiting Germany. Give an estimating example of how Julie could guarantee herself of having at least 540 Marks. Show and explain your example below.
having at least 636.47 to exchange to 540 marks
The estimated money Julie should carry with herself is $572.64
What is estimation?Estimating in maths is a way of approximately calculating an answer or to check its accuracy.
Given that, Julie figures that she will need at least 540 Marks (German money) to get the items she wants when visiting Germany.
To find how much currency she should carry, we will convert the US currency into German currency
$1.06 = €1
Therefore, €540 = 1.06x540 = $572.64
Hence, The estimated money Julie should carry with herself is $572.64
For more references on estimation, click;
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PLEASE HELP ME! 40 POINTS!
there’s a photo that has the problem.
Which set of measurements will form a unique triangle?
angle measures of 45°, 45°, 90°
angle measures of 60°, 60°, 60°
side measures of 20 cm, 20 cm, 20 cm
side measures of 1 cm, 1 cm, 100 cm
How many solutions exist for the equation: 8(4-2x)=4(3-5x)+4x
A) Two solutions
B) One solution
C) No solution
D) Many solutions
Answer:
C
Step-by-step explanation:
We have the equation:
[tex]8(4-2x)=4(3-5x)+4x[/tex]
Let's expand both sides. Distribute on the left:
[tex]32-16x=4(3-5x)+4x[/tex]
Distribute on the right:
[tex]32-16x=12-20x+4x[/tex]
Combine like terms on the right:
[tex]32-16x=12-16x[/tex]
Add 16x to both sides:
[tex]32\neq12[/tex]
This is not true.
So, our equation has no solutions.
This would mean that our two linear equations are parallel to each other.
Our answer is C
Answer:
C
Step-by-step explanation:
There are no values of x that make the equation true.
No solution
Please help!!
Solve for x.
12x - 39 ≤ 9 AND -4x + 3 -9/4
d) There are no solutions
e) All values of x are solutions.
Will mark brainliest to the first answer!!