Answer:
x = - 1, y = 1
Step-by-step explanation:
Given the 2 equations
2y + 7x = - 5 → (1)
5y - 7x = 12 → (2)
Adding the2 equations term by term will eliminate the term in x, that is
7y = 7 ( divide both sides by 7 )
y = 1
Substitute y = 1 into either of the 2 equationsand solve for x
Substituting into (1)
2(1) + 7x = - 5
2 + 7x = - 5 ( subtract 2 from both sides )
7x = - 7 ( divide both sides by 7 )
x = - 1
solution is x = - 1, y = 1
My sister asks you guys for help once more!
What is the value of 7/10 - 3/6?
Answer:
Part 1: 10, Part 2: 6
Step-by-step explanation:
Answer:
1/5
Step-by-step explanation:
7/10 - 3/6
42/60 - 30/60 = 12/60
12/60 = 6/30 = 1/5
5 people will equally split 861 acres of land. How much land will each person get?
Write your answer as a decimal.
Answer:200.25
Step-by-step explanation:
please simplify
-2c + 7 + 2c
Answer:
7
Step-by-step explanation:
Let's simplify step-by-step.
−2c+7+2c
Combine Like Terms:
=−2c+7+2c
=(−2c+2c)+(7)
=7
A dolphin was swimming 3 feet below sea level. The number line shows the
location of the dolphin. It then dove down 6 feet. Describe how to use the
number line to find the new location of the dolphin,
Answer:
-9
Step-by-step explanation:
you have to go left wards 6 times from -3
The correct answer is option C which is on the number line move 6 units left and stop at -9 the dolphin will now be at 9 feet below sea level.
What is a graph?A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.
It is given that a dolphin was swimming 3 feet below sea level. The number line shows the location of the dolphin. It then dove down 6 feet.
In the graph, we can see that from -3 point the 6 units left will be -9 point. Therefore the correct answer is option C which is on the number line move 6 units left and stop at -9 the dolphin will now be at 9 feet below sea level.
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Find the value of n: 4/5* n/6=4/5 /n/6
The value of n is ±6.
What is Multiplication?
Multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
The expression is given as,
4/5 × n/6 = 4/5/n/6
Now, Solve the equation as,
4/5 × n/6 = 4/5/n/6
4/5 × n/6 = 4/5 × 6/n
n/6 = 6/n
After cross multiplication,
n² = 36
Taking square root,
n = √36
n = ±6
Hence, The value of n is ±6.
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160 is what % of 40
plz explain
Answer:
150%
Step-by-step explanation:
this is because you can make a part to whole ratio where you have x/100 (which would symbolize the percent) and 160/40 (which would symbolize the part) then, multiply 160 by 100 to get 16000 and then divide by 40 to fulfill the x. Hope this helps!
The Davis family traveled to Silver Lake in five hours. Their return trip took StartFraction 7 Over 8 EndFraction of the time it took to travel to the lake. How long did the return trip take?
Answer: Im pretty sure the answer is 4 and 3/8
Step-by-step explanation:
hope this helps!
Answer:
4 and 3/8
Step-by-step explanation:
Plz brainliest
Examine the following figure.
If JL = 16, KM = 4x - 1, and KM is a perpendicular bisector of JL determine which of the following values are correct. Select THREE that apply
Answer:
C.KM = 15
D.KL = 17
F.Perimeter or triangle JKL = 50
Step-by-step explanation:
just finished the test
What will happen to the slope of line P if the line is shifted so that the y-intercept increases and the x-intercept remains the same?
The slope will change from positive to negative
The slope will increase
The slope will change from negative to positive
The slope will decrease
Answer:
Step-by-step explanation:
⊕ The slope will increase
A ski resorts offers private lessons to their customers. Big time ski mountain charges $5 per hour plus $50 insurance. Powder hills charges $10 per hour plus $30 insurance. How many hours would make the cost of lessons the same for each resort?
Answer:
4 hours
Step-by-step explanation:
Big time ski mountain charges $5 per hour plus $50 insurance.
Powder hills charges $10 per hour plus $30 insurance.
Let the number of hours be x.
For big time ski mountain, it means the total cost of x hours of lesson is:
[tex]B=50+5(x)\\B=50+5x[/tex]
For powder hills , it means the total cost of x hours of lesson is:
[tex]P=30+10(x)\\P=30+10x\\[/tex]
We need to equate both equations to find the time that the costs would be the same.
That is :
[tex]50+5x=30+10x[/tex]
Collect like terms:
[tex]10x-5=50-30\\5x=20[/tex]
Divide through by 5:
[tex]x=\frac{20}{5} \\x=4 hours[/tex]
It would take 4 hours for the cost of the lessons to be the same.
PLEASE MARK ME AS BRAINLIEST
Hope you guys have a good Christmas!!!
Answer:
hope I will and you do to
Good capitalization. I am impressed.
estimate of 372 divided by 4
Nick bought jeans for $34.95 and a shirt for $24.95. The cashier said the total cost including 8.5% sales tax was $68.40. Below are the steps the cashier completed: Step 1: 34.95 + 24.95 = 59.90 Step 2: 59.90 + 8.50 = 68.40 Are the cashier's steps correct? If not, explain the error and then state in complete sentences how to calculate sales tax and total cost correctly. Make sure you give the correct total. (Round the final answer to the nearest hundredth
Answer:
The cashier is wrong
[tex]Amount = 64.99[/tex]
Step-by-step explanation:
Given
[tex]Jeans=34.95[/tex]
[tex]Shirt = 24.95[/tex]
[tex]Sales\ Tax = 8.5\%[/tex]
Solving (a): Is the Cashier's step correct?
The cashier is wrong at step 2 because instead of calculating the sales tax, the cashier add the sales tax percentage to the total cost.
Solving (b):
First, calculate the total cost by adding the cost of jeans and shirt respectively:
[tex]Total = 34.95 + 24.95[/tex]
[tex]Total = 59.90[/tex]
Next, multiply the sales tax percentage to the total cost to get the sales tax amount.
[tex]Sales\ Tax = 8.50\% * 59.90[/tex]
[tex]Sales\ Tax = 5.0915[/tex]
Add the sales tax to the total, this gives the total payable amount.
[tex]Amount = 59.90 + 5.0915[/tex]
[tex]Amount = 64.9915[/tex]
[tex]Amount = 64.99[/tex] approximated
need help w algebra pls asap. i’ll mark brainlist!!
Answer:
The mistake is that they left the i^2 as it is instead of making it -1 because i is the square root of -1. You fix this by replacing i^2 by -1 and you will get (4-7i)/5
Step-by-step explanation:
Solve for x. 4(4x-8)^2+16=25
Let's solve your equation step-by-step.
4(4x−8)2+16=25
Step 1: Simplify both sides of the equation.
64x2−256x+272=25
Step 2: Subtract 25 from both sides.
64x2−256x+272−25=25−25
64x2−256x+247=0
Step 3: Factor left side of equation.
(8x−13)(8x−19)=0
Step 4: Set factors equal to 0.
8x−13=0 or 8x−19=0
x=13/8 or x=19/8
Which is not Figurative
List the first five multiples of each number.
5
7
12
16
Answer:
For the number 5 the multiples are 5, 10, 15, 20, 25
For the number 7 the multiples are 7 ,14 ,21 ,28 ,35
For the number 12 the multiples are 12 ,24 ,36 ,48 ,60
Last for the the number 16 the multiples are 16, 32, 48, 64, 80
Step-by-step explanation:
HAVE A GOOD DAY!
Answer:
Step-by-step explanation:
5- 5,10,15,20,25.
7- 14, 21, 28, 35
12- 24, 36, 48, 60, 72
16- 32,48,64, 60
I hope this helps:)
Plz help im on a timer
Does the graph represent a
proportional or non-proportional
relationship?
Answer:
i think its non-proportional
Solve Each Equation PLS SHOW WORK
9. |8m + 7| - 5 = 60
Answer:
Step-by-step explanation:
assuming '|' is ()
(8m + 7) - 5 = 60
8m + 7 = 60 + 5 = 65
8m = 65 - 7 = 58
m = 58/8 = 7.25
John is making a recipe that call for 1/4 cup of flour for every 1/2 cup of water. How much water will he need if he uses 1 1/2 cups of flour?
or
On his way to work this morning, Gabe stopped and bought a salad to eat for lunch. He paid for it with $9 from his wallet.
What integer represents the change in the amount of money in Gabe's wallet?
An integer is a whole number that can be positive, negative, or zero.
The integer that represents the change in the amount of money in Gabe's wallet is -9.
What is an integer?An integer is a whole number that can be positive, negative, or zero.
We have,
Salad cost = $9
Let the total amount in the wallet = $M
Now the amount in the wallet = $M - $9
There will be $9 less in Gabe's wallet.
The change can be denoted by a negative integer -9 from the wallet.
Thus,
The integer that represents the change in the amount of money in Gabe's wallet is -9.
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Question below
image below vvvvvv firsts gets brainiest
Answer:
I believe the answer is b I hope you do well:)
Sandy went for a jog and completed 2 miles. How many yards did she jog?
Answer:
3,520
Step-by-step explanation:
Answer:
3,520 yards
Step-by-step explanation:
I converted miles to yards
AD = DB and AE = EC
m AED = 32
EF = 6
m ECF = ?
Match the number to the quadrant they are on in the complex plane.
4 + 41
-7 +3i
9 - 181
-1 - 31
Answer: 44
4
13
Step-by-step explanation:
SIMPLE SLOPE MATH QUESTION PLS HELPPPPPPPPPPP
Answer:
9/2
Step-by-step explanation:
Please mark as brainliest. I'm happy to help
Answer:
9/2
Step-by-step explanation:
slope formula is :
( Y2-Y1)
----------- =
( X2-X1)
Nathan has a 16 ounce energy drink. He drinks 9 ounces. Enter the percentage of ounces Nathan has left of his energy drink. Round your answer to the nearest hundredth
Answer:
56%
Step-by-step explanation:
Let me know if you need an explanation! Hope this helped :)
Answer:
43.75%
Step-by-step explanation:
step 1
16-9=7
7ounce remains
step2
7 of 16 ounce remains
convert into percentge
7/16×100=43.75%
A car travels 198 miles in 3 hours. Assuming that the distance varies directly with the time, how far will the car travel in 5 hours
Answer:
330 miles
Step-by-step explanation:
198/3 = 66; this shows how fast the car is going per hour
66 * 5 = 330; this is how far the car goes in 5 hours
I need help with this rq
The two functions appear to be symmetric about the y axis, and satisfy the equation:
[tex]g(x) = f( - x) \\ g(x) = \frac{1}{2} (3) {}^{ - x} [/tex]Answer: Option 3