Elimination
Solve the system using elimination
2x-y=2
-6x+y=-18
Answers
Answer:x=4
Y=6
Step-by-step explanation:
Answer:
x = 4, y = 6
Step-by-step explanation:
Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables. Then you have your answer.
Related Questions
What is the quotient of 65,610 ÷ 18?
Answers
Answer:
3645
Step-by-step explanation:
65610/18=3645
(2x+5+8)/x-2 there should be a remainder left, pls help
Answers
Answer: 13/2
Decimal answer 6.5
im sorry if it was wrong it was what I got
Step-by-step explanation:
In a standard deck of cards, what is the probability of drawing a red card or a face card?
Answers
Answer:
3/26
Step-by-step explanation:
6 of the 52 cards are red
The probability of drawing a blue
marble from a bag containing
these marbles is 1/2.
If you replace the marble each time,
predict how many times a blue marble
will be chosen out of 50 draws
Answers
We can expect that out of 50 draws with replacement, approximately 25 blue marbles will be chosen on average.
If the probability of drawing a blue marble from the bag is 1/2, and the marble is replaced after each draw, we can expect that the probability of drawing a blue marble remains constant for each draw. Therefore, for each individual draw, there is a 1/2 chance of selecting a blue marble.
To predict how many times a blue marble will be chosen out of 50 draws, we can use the concept of expected value. The expected value is calculated by multiplying the probability of an event by the number of times it is expected to occur.
In this case, the probability of drawing a blue marble is 1/2 for each draw, and we are drawing 50 times. Therefore, the expected number of blue marbles drawn can be calculated as:
Expected number of blue marbles = Probability of drawing blue × Number of draws
= (1/2) × 50
= 25
Based on this calculation, we can expect that out of 50 draws with replacement, approximately 25 blue marbles will be chosen on average.
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How much simple interest would Alexis earn if he deposits $2450 in a savings account with a simple interest rate of 12% for 15 years.
Answers
Answer:
4410
Step-by-step explanation:
It takes 56 minutes for 7 printing machines to
produce a batch of newspapers.
a) How many minutes would it take just 1 machine?
b) How many minutes would it take 8 machines?
Answers
Answer:392
Step-by-step explanation:
a) It would take one machine 392 minutes.
b) It would take one machine 49 minutes.
Define the term proportion?Two ratios are said to be equal when a proportion is stated. When comparing two quantities, ratios are used to divide one quantity by the other.
a) Here given that, to produce a batch of newspaper 7 printing machines needed 56 minutes.
Using this relationship, we can set up a proportion:
as given, 7 printing machine needed = 56 minutes
So, 1 printing machine needed = 7 × 56 minutes = 392 minutes
Therefore, it would take one machine 392 minutes to produce the same batch of newspapers.
b) Similarly, to find out for 8 machines to produce the same batch of newspapers, we can use the same relationship:
1 printing machine needed = 392 minutes
So, 8 printing machine needed = (392 / 8) minutes = 49 minutes
Therefore, it would take one machine 49 minutes to produce the same batch of newspapers.
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Find the solutions of the equation.
23 <3x-3(-) ≤ 66
a) (-, 11)u[33, [infinity])
b)(-, 11]u[33,[infinity])
c) (11,33)
d) [11, 33]
e) (11, 33]
f) None of the above.
Answers
The solution to the inequality is:
x ∈ (-∞, -21].
The correct option is F.
To solve the given inequality, we'll first simplify the expression:
23 < 3x - 3 ≤ -66
To simplify the inequality,
23 < 3x - 3 ≤ -66
Adding 3 to all parts of the inequality:
23 + 3 < 3x - 3 + 3 ≤ -66 + 3
Simplifying:
26 < 3x ≤ -63
Next, divide all parts of the inequality by 3:
26/3 < 3x/3 ≤ -63/3
Simplifying:
8.67 < x ≤ -21
Therefore, the solution to the inequality is:
x ∈ (-∞, -21]
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Given the definitions of f (x) and g(x) below, find the value of g(f (2)).
f(x) = 3x² – 3x – 3
g(2) =x+1
Answers
znjsndjssjjfjfkd
the product of a number and 3
as an expression
Answers
Answer:
3x
Step-by-step explanation:
Let the number be 'x'
The product of a number and 3 = 3*x = 3x
Answer:
3x
.................
For the rectangular prism, the length is 312 inches, and the height is 512 inches.
What is the width?
Answers
Answer:
I'm very sorry but you would need the volume to find the width.
Step-by-step explanation:
Answer: The answer is 396 in²
Step-by-step explanation:
TRUST ME I AM TRUSTWORTHY PERSON
set up the integral that uses the method of disks/washers to find the volume v of the solid obtained by rotating the region bounded by the given curves about the specified lines.y=x2/3+3,y=3,x=6
About the line y=16.
Answers
\(\pi \int\limits^6_0 {\frac{26}{3} } \, x^{2} -\frac{1}{9} x^{4} dx\) is the integral that uses the method of disks/washers to find the volume v of the solid obtained by rotating the region bounded by the given curves about the specified lines.
A method for determining the volume of a solid of revolution of a solid-state material while integrating along an axis "parallel" to the axis of revolution is known as disc integration, also known as the disc method in integral calculus.
This technique stacks an endless number of discs with varied radii and minuscule thickness to produce the final three-dimensional form. To create hollow solids of revolutions, the same ideas may also be applied when using rings in place of discs (this is known as the "washer technique").
As opposed to this, shell integration integrates along an axis that is parallel to the axis of revolution. The solution can be seen in the attached images below.
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Four people each roll a fair die once. Quantity A: The probability that at least two people will roll the same number Quantity B: 70%
Answers
How likely something is to occur is known as its probability.Probability when die rolled 1st time is 6C1 i.e. (1,2,3,4,5,6).
Find the probability ?How likely something is to occur is known as its probability.We can discuss the probabilities of various outcomes—how likely they are—when we aren't sure how a particular event will turn out. Statistics describes the examination of events subject to probability.
Probability when die rolled 1st time=6C1 i.e. (1,2,3,4,5,6) suppose 1 comes, then 2nd time it should not be .as it is given that no 2 people will roll same number.
so 2nd time probability=5C1 i.e. (2,3,4,5,6). same way 3rd and 4th time probability=4C1 and 3C1 respectively.Probability that no one rolls the same no. = 6*5*4*3and total possibility =6^4
p(same number)= 6*5*4*3/ 6^4
= 5/18
p(no same number will roll)=1-5/18
=13/18
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1. You buy 3 pounds of organic apples for $7.50. The graph shows the price for regular apples.
What is the unit rate for each type of apple?
9 ν ε
1 2 3 4 5 6
1 2 3 4 5 6
pounds
O organic $2.50/pound; regular $3.00/pound
O organic $0.40/pound; regular $0.50/pound
O organic $2.50/pound; regular $2.00/pound
Onone of the above
Answers
The rate of each type of the given apples above would be = organic apple $2.50/pound;regular $2.00/pound. That is option C.
How to calculate the rate of the two types of apple given?For organic apple;
The quantity of apples sold for $7.50 = 3 pounds.
The amount that is sold for an apple would be = ?.
That is ;
$7.50 = 3 pounds
$x. = 1 pound
make X the subject of formula;
X = 7.50/3
Therefore 1 pound = 7.50/3 = $2.50/pound.
For regular apple;
The rate can be detected from the graph;
1 pound of apple = $2
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This is the 100% daily value of added sugar in a 2,000 calorie diet 10%kcal 28 g 2300mg 50 g
Answers
Answer:
28 g. ................
Can we conclude that (x-5) is a factor of the polynomial x^3+8x^2+11x-20
Answers
Answer: No
Step-by-step explanation:
Let \(f(x)=x^3 +8x^2 +11x-20\).
Then, \(f(5)=5^3 +8(5)^2 +11(5)-20=360\).
Since \(f(5) \neq 0\), \((x-5)\) is not a factor of \(f(x)\) by the factor theorem.
How long will it take a car to accelerate from 15.2 m/s to 23.5 m/s if the car has an average acceleration of 3.2 m/s2?
Answers
Answer:
t=2.59s
Explanation:
v=23.5m/s u=15.2m/s a=3.2m/s^2 t=? using equation v=u+at t=(v-u)/a t= (23.5-15.2)/3.2=8.3/3.2=2.59s
the model represents the equation x - 1 < -4. What is the solution for the inequality?
Answers
Answer:
any number equal to or less than -4
Step-by-step explanation:
x - 1 < -4
< represents that -4 is a larger number than x - 1. we know that -4 is a negative number, so anything below -4 would be less. x = -4 would be a good solution, but the reality is that any number equal to or less than -4 is the correct answer. I hope this helps!
if there is a very weak correlation between two variables, then the coefficient of determination must be group of answer choices
Answers
Answer:
If there is a very weak correlation between two variables, then the coefficient of determination (R-squared) must be low as well.
This is because the coefficient of determination measures the proportion of variance in the dependent variable that can be explained by the independent variable(s).
When the correlation between the variables is weak, there is less variance in the dependent variable that can be explained by the independent variable(s), resulting in a lower R-squared value. So, the answer is "low".
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Mike's Movers charges a flat rate of 550 plus $25 per hour. If one of their customers was charged a total of $225, for how many
hours were they charged?
Please asap
Answers
not 9 the answer should be 3
33/25 as a decimal rounded to the nearest tenth
Answers
Answer:1.3
Step-by-step explanation:
33/22=1.32
Round to nearest 10th
1.32=1.3
solve the system of equations
Answers
Answer:
y = -3 when x = 4
Step-by-step explanation:
2x-4y = 20
x = 4
2(4) - 4y = 20
8 - 4y = 20
-4y = 12
y = -3
a dog is 3 times as old as a cat. in 8 years the dog will be twice as old as the cat will be then. if x repsents the age of the cat in years which stament is true
Answers
Answer:
The first answer is true
Step-by-step explanation:
I took the test
square root 2x-7 = 1
Answers
Answer:
4
Step-by-step explanation:
To solve for x in the equation:
√(2x - 7) = 1
We can start by isolating the square root by squaring both sides of the equation:
(√(2x - 7))^2 = 1^2
2x - 7 = 1
Next, we can isolate the variable by adding 7 to both sides of the equation:
2x = 8
Finally, we can solve for x by dividing both sides by 2:
x = 4
Therefore, the solution to the equation √(2x - 7) = 1 is x = 4.
What is the probability of rolling a number less than 4 and then rolling a prime number
Answers
Answer:
1/6
Step-by-step explanation:
Find the distance between the two numbers on the number line.
1.8
12.
-2.5
-3
-2
1
0
1
2
F. 4.1
G. 0.7
H. 4.3
I. -0.7
Answers
Answer:
Step-by-step explanation:
A simple way to calculate the distance between numbers on a number line is to count every number between them. A faster way is to find the distance by taking the absolute value of the difference of those numbers. Absolute value of a number on a number line is its distance from 0 on the number line .
Cody Ray's credit card company uses the unpaid-balance method and charges a monthly periodic rate of
1.8%. His finance charge was $17.54, he made $376.90 in new charges and a $250 payment.
Answers
Based on Cody Ray's credit card details and the unpaid-balance method, Cody Ray's unpaid balance is $144.44 and his previous balance is $144.44. His new balance is $147.04
What are Cody Ray's balances?His unpaid balance is:
= Purchases + Finance charge - (Payments + Credit)
= 376.90 + 17.54 - 250
= $144.44
Previous balance is the $17.54 finance charges.
New balance:
= Unpaid balance + Finance charge + New Purchases
= 144.44 + (144.44 x 1.8%)
= $147.04
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If angle 1 = (2x+5) and angle 7 = (4x-17), find x
Answers
The value of x is 11
What is supplementary angle ?
Two angles are said to be supplementary if their sums total 180 degrees. A linear pair's two angles, like angles 1 and 2 in the illustration below, are always supplementary. But two angles don't have to be close to one another to be supplementary. In the following image, 3 and 4 are supplementary since their sums equal 180 degrees.
Angles ∠1 and ∠7 are alternate exterior angles where a transversal crosses parallel lines, so are congruent.
∠ 1 = ∠ 7
∴2x + 5 = 4x - 17
4x - 2x =17+5
2x = 22
x = \(\frac{22}{2}\)
x = 11
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What is 2p + (3q + 2) = (2p + 3q) + 2
Answers
Answer:
associative property of addition
Step-by-step explanation:
2p + (3q + 2) = (2p + 3q) + 2
There are no terms that can be combined since there are no like terms
We are using the associative property to move the parentheses from one group of terms to the other.
Find the length of the missing side. The triangle is not drawn to scale.
Select one:
a. 10
b. 48
c. 28
d. 100
Answers
Answer:
10.. love yall hope i helped can i get brainliest
Step-by-step explanation:
Answer:
[See Below]
Step-by-step explanation:
✦ Formula:
✧ a² + b² = c²
✦ Rewrite:
✧ 8² + 6² = c²
✦ Solve the powers:
✧ 8² = 64
✧ 6² = 36
✦ Add:
✧ 64 + 36 = 100
Now find the root of 100:
✧ √100 = 10
So the answer is A, 10.
~Hope this Helps Mate. If you need anything feel free to message me.
Glen is building a roof for a garage with the dimensions shown below. What is the surface area of the roof, in square feet? Round your answer to the nearest hundredth. Show all the steps you took to solve the problem.
Answers
Answer:
2806.72
Step-by-step explanation:
use the phythagrome theorm