Answer:
X=9
Y=-9
Step-by-step explanation:
3x - 4y =9
-3x +2y=9 cross 3x and - 3x since they're opposite ــــــــــــــــــــــــ
-4y +2y =9 +9
-2y =18
Y =-18/2
Y= -9
Replace y in the first equation:
3x - 4 (-9)=9
3x +36=9
3x = 27
X= 27/3
X= 9
Hope this helps you.. Good luck
Answer:
x=-9 and y=-9
Step-by-step explanation:
Suzy has 7 separate rings as shown in the figure on the left. She wants to make one open chain as shown in the figure on the right. What is the least number of rings Suzy needs to cut?
Answer:
every other one
Step-by-step explanation:
to put it specifically rings, 2, 4 and 6
Examine the expanded form. y ∙ y ∙ y ∙ y ∙ y ∙ y ∙ y ∙ y ∙ y ∙ y Which represents the expanded form in exponential form? 10y 10y y10 y10y
Answer:
[tex]y^{10}[/tex]
Step-by-step explanation:
When you do that operation, the y's become an exponential.
Answer:
its c
Step-by-step explanation:
Write your own word problem that involves a multistep linear equation. Then translate your problem into its resulting math equation.
Answer:
The cost of admission to a festival was $112 for 9 children and 3 adults. The admission was $108 for 8 children and 3 adults in another festival. How much was the admission for each child and adult?
Step-by-step explanation:
Which process contributes to the formation of tornados? a. water droplets freeze, giving off energy b. the storm begins to rotate around a central eye c. warm air rises, resulting in a decrease in air pressure. d. a cold, dry air mass interacts with a warm, moist air mass
Answer:
D. A cold, dry air mass interacts with a warm, moist air mass.
Step-by-step explanation:
Tornadoes are very scary and kind of cool to look at. They have a great scientific reason behind them which we can easily understand. First, a funnel cloud forms that reaches down to the ground (you probably have seen this in video as a cloud that is heavily densed and circling). Then , warm air rises, resulting in a decrease in air pressure and finally, a cold, dry air mass interacts with a warm, moist air mass.
Answer:C. I think please don't get mad if it's wrong
Step-by-step explanation:
Hope this helps!
Which of the following demonstrates the Commutative Property of Multiplication? 2(6a − 3) = (6a − 3) ⋅ 2 2(6a − 3) = 12a − 6 12a − 6 = (6a − 3) ⋅ 2 (2 ⋅ 6a) − 3 = 2(6a − 3) will pick brainliest
Answer:
AStep-by-step explanation:
The Commutative Property of Multiplication states that it doesn't matter in what order you multiply terms to get the same answer:
In this case
A: commutative property
B: distributive property
C: distributive property
D: associative property
Thus the answer is option A
The end behaviour for the polynomial function h(x)=−x3+x4−2x+1 h ( x ) = - x 3 + x 4 - 2 x + 1 is: x→−[infinity], y→−[infinity] x → - [infinity] , y → - [infinity] and x→[infinity], y→[infinity] x → [infinity] , y → [infinity] x→−[infinity], y→[infinity] x → - [infinity] , y → [infinity] and x→[infinity], y→[infinity] x → [infinity] , y → [infinity] x→−[infinity], y→−[infinity] x → - [infinity] , y → - [infinity] and x→[infinity], y→−[infinity] x → [infinity] , y → - [infinity] Unable to tell.
Answer:
[tex]\text{As } x \to \infty, y \to \infty,$and as x \to -\infty, y \to \infty[/tex]
Step-by-step explanation:
Given the polynomial function: [tex]h(x)=-x^3+x^4-2x+1[/tex]
To examine its end behavior, we create a table of values that we can then examine.
[tex]\left|\begin{array}{c|c}x&h(x)\\--&--\\-4&329\\-3&115\\-2&29\\-1&5\\0&1\\1&-1\\2&5\\3&49\\4&185\end{array}\right|[/tex]
From the table, we see a repeating pattern of positive values of h(x) with h(1)=-1 being an axis of symmetry.
Therefore, as:
[tex]x \to \infty, h(x) \to \infty\\x \to -\infty, h(x) \to \infty[/tex]
Gabriella drives her car 300 miles and averages a certain speed. If the average speed had been 9mph less, she could have traveled only 240 miles in the same length of time. What is her average speed?
Answer:
Her average speed is 45 mph
Step-by-step explanation:
Let the average speed be x mph
Time taken complete the journey = distance/ average speed
Time = 300/x
Now , at 9 mph less, she could have only traveled 240 miles in same time
At 9 mph less, the average speed is x-9
so the time would be 240/x-9
since the time is same as before;
300/x = 240/x-9
Divide both sides by 60
5/x = 4/x-9
Cross multiply
5(x-9) = 4(x)
5x - 45 = 4x
5x -4x = 45
x = 45 mph
Which situations can represent the expression n + 2?
Answer:
Many situations can do so.
Step-by-step explanation:
Imagine your father gave you $n (n dollars), your mother then gives you $2 dollars. How many dollars do you have now? n+2 dollars.
You have two assignments to complete for this term. Your Physics teacher decides to give you n assignments to do. How many assignments do you need to do to complete the term? n+2 assignments.
On Brainly, you have n points. You answered a Geography question which awarded you 2 points. How many points do you have now? n+2 points.
Hope it helps!
The discriminant of the function is
Answer:
A. is 0
Step-by-step explanation:
When the discriminant is 0, there is one solution to the function, meaning the parabola intersects the x-axis at only one point. Here, that point is (2, 0).
I hope this helps :))
If the scores of 3 students in a test are 5,6 and 7. Find the standard deviation of their scores.
Answer:
0.82
Step-by-step explanation:
Step 1: (Calculating mean)
=> [tex]\frac{5+6+7}{3}[/tex]
=> [tex]\frac{18}{3}[/tex]
=> Mean = 6
Step 2:
=> (5-6)² = (-1)² = 1
=> (6-6)² = (0)² = 0
=> (7-6)² = (1)² = 1
Step 3: (Adding all values calculated in step 2)
=> 1+ 0 + 1 = 2
Step 4: (Dividing the result in step 3 by no. of observations)
=> 2/3 = 0.67
Step 5: (Get square root to calculate the deviation.)
=> [tex]\sqrt{0.67}[/tex] = 0.82
Simplify this expression. 4x-12/x^2-9
Answer:
4/(x+3)Step-by-step explanation:
write the expression down:
4x-12/x^2-9
factor:
4(x-3)/(x+3)(x-3)
simplify:
4/(x+3)
We created this inequality to represent how Amy can meet her revenue goals:
-100x2 + 15,750x + 212,500 ≥ 243,600
In this activity, you’ll solve this inequality to find the minimum ticket price Amy should charge to meet her minimum revenue goal.
Part A
Set the inequality greater than or equal to 0.
Part B
Simplify the inequality by dividing by the GCF so the leading coefficient is positive.
Part C
Factor the left side of the inequality by grouping.
Part D
Solve the quadratic inequality. Remember to check any possible solutions for viability.
Part E
What is the minimum number of $2 increases that Amy needs to apply to the ticket price to reach her desired revenue?
Part F
What’s the minimum ticket price that Amy can charge and reach her goal? Recall that the ticket price is represented by 25 + 2x, where x represents the number of $2 increases.
Answer:
x = 2
Price = $29
Step-by-step explanation:
If x is the number of $2 dollars increases, then the minimum number of increases required to meet her goal is:
[tex]-100x^2 + 15,750x + 212,500 \geq 243,600\\-100x^2 + 15,750x -31,100\geq 0\\x^2 -157.5x + 311\geq 0\\x=\frac{157.5\pm\sqrt{157.5^2-(4*1*311)} }{2}\\ x_1= 2\\x_2=155.5[/tex]
The only realistic value is x = 2 $2 increases
If the original price was $25, then the new rice required to reach Amy's goal is:
[tex]P=25+2*2\\P=\$29[/tex]
The minimum ticket price is $29.
Answer: B: 2x^2-315x+622_< 0
C: (2x-311)(x-2)_< 0
("_<" means greaten than for equal to)
Jenny wants to buy a new dress for her first school dance. She borrows $25.63 from her sister to help pay for the dress. Then Jenny earns $16.33 helping her dad organize his home office. If she gives all the earnings to her sister, Jenny will still owe her sister $__ .
Answer:
$9.30
Step-by-step explanation:
If you subtract 16.33 from the total of 25.63 you will have 9.3 or 9.30. (They're the same number.)
3. Graph the line by finding the x and y intercepts. 2x + 3y = 6
Answer:
x-int: (3, 0)
y-int: (0, 2)
Step-by-step explanation:
The x-int is found when y = 0. Set y to 0 to solve for the x-int.
The y-int is found when x = 0. Set x equal to 0 to solve for the y-int.
Can I get the answer to this?
m<JKL=45°
Please see the attached picture for full solution
hope it helps..
Good luck on your assignment...
Answer:45°
Step-by-step explanation:
Factorise the following quadratic equations
Answer:
see explanation
Step-by-step explanation:
In 13 - 17
Consider the factors of the constant term which sum to give the coefficient of the x- term
13
x² - x - 42 = (x - 7)(x + 6)
15
x² + x - 6 = (x + 3)(x - 2)
17
x² - 27x + 50 = (x - 25)(x - 2)
19
r² - 25 ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b) , thus
r² - 25
= r² - 5² = (r - 5)(r + 5)
1. (x+6)(x-7)
2. (x+3)(x-2)
3. (x-2)(x-25)
4. (x-5)(x+5)
I hope it helps
Marcus spent 10 hours doing his homework last week. This week he spent 11 hours doing homework. He says that he spent 110% more time doing homework this week. Is he correct?
Answer:
[ 11 - 10 ] / 10 x 100%
= 1 /10 x 100%
= 10%
Only 10% longer
√5 (6 - 4·√3) I need this simplified
Answer:
[tex]6\sqrt{5}-4\sqrt{15}[/tex]
Step-by-step explanation:
[tex]\sqrt{5} \times (6 - 4\sqrt{3} )[/tex]
[tex]\sqrt{5}\times 6-\sqrt{5}\times4\sqrt{3}[/tex]
[tex]6\sqrt{5}-4\sqrt{5}\sqrt{3}[/tex]
[tex]6\sqrt{5}-4\sqrt{5 \times 3}[/tex]
[tex]6\sqrt{5}-4\sqrt{15}[/tex]
Answer:
6[tex]\sqrt{5}[/tex] - 4 [tex]\sqrt{15}[/tex]
Step-by-step explanation:
1. Multiply each term in the parentheses by [tex]\sqrt{5}[/tex]
2. calculate the product
3. solution :)
Plz Answer this question fast, Thank You
Answer:
162
Step-by-step explanation:
20736 x 729 x 4/216 x 64 x27
Now go ahead and do the cancellations
20736/216 =96
729/27 =27
64/4 =16
so you end up getting 96 x 27 x1 /26
96/16 =6
so you get 27 x 6 =162
Help! Quadratic sequences! Find the next two terms in these: 1,4,9,16 1,8,27,64 ty!
Answer:
1. 25, 36
2. 125, 216
Step-by-step explanation:
in the sequence of 1.4.9.16. The next two terms are 25 and 36. This is because we are calculating the squares of the number in the term in other words, the nth term = n^2
For the sequence starting 1,8,26,64. The next terms are 125 and 216. This is because the nth term = n^3
Hope this helps
if x=2 what is x-6/8 + 5
Answer:
[tex] \frac{9}{2} [/tex]Solution,
X=2
Now,
[tex] \frac{x - 6}{8} + 5 \\ = \frac{2 - 6}{8} + 5 \\ = \frac{ - 4}{8} + 5 \\ = \frac{ - 4 + 5 \times 8}{8} \\ = \frac{ - 4 + 40}{8} \\ = \frac{36}{8} \\ = \frac{9}{2} [/tex]
hope this helps ..
Good luck on your assignment..
In order to avoid heavy traffic, Antonio can drive home after working less than 7 hours or after working more than 9 hours. How can this be written as a single compound inequality?
Answer:
h < 7 or h > 9
Answer:
C. h < 7 or h > 9
if joe earns 90 buck a month and he need 700 how many months will he need to work
The diagram below is divided into equal parts. Which fraction of the parts is white?
Answer:
3/7
Step-by-step explanation:
3 parts out of 7 are white
Answer: The correct answer will be 3/7. :)
Step-by-step explanation:
Describe the transformations from the parent function, and define the function of the following graph.
Answer:
From the parent graph f(x) = x², the graph moved horizontally left by 3 units and vertically down by 5 units.
The equation of the new graph is f(x) = (x + 3)² - 5
Step-by-step explanation:
SIMPLIFY (2a^2)^3/4a^4 please help
Answer: 2a^2
Step-by-step explanation:
2^3 = 8
8 / 4 = 2
————————
(a^2)^3 = a^6
a^6 / a^4 = a^2
A person places $728 in an investment account earning an annual rate of 4.4%, compounded continuously. Using the formula V = Pe^rt where V is the value of the account in t years, P is the principal initially invested, e is the base of a natural logarithm, and r is the rate of interest, determine the amount of money, to the nearest cent, in the account after 16 years.
Answer:
Step-by-step explanation:
For us,
P = 728,
r = .044,
e is Euler's number (a constant), and
t is 16. Filling in:
[tex]V=728e^{(.044)(16)}[/tex] and
[tex]V=728e^{(.704)}[/tex] and
V = 728(2.02182385) so
V = $1471.89
A person places $728 in an investment account earning an annual rate of 4.4%, compounded continuously. The value of the account in t years is $1471.89.
We have given that,
P = 728,
r = 0.044,
e is Euler's number (a constant), and
t = 16.
What is the formula of the account in t years?The formula of the account in t years is,
[tex]V = Pe^{rt}[/tex]
Use the given value in the above formula,
V = 728(2.02182385)
Therefore we get,
V = $1471.89
Therefore, the value of the account in t years is $1471.89.
To learn more about the account balance visit:
https://brainly.com/question/25987747
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What is the value of (4 minus 2) cubed minus 3 times 4? Negative 20 Negative 4 4 20
Answer:
-4
Step-by-step explanation:
(4-2)^3 - 3*4
PEMDAS
P arentheses
(2)^3 - 3*4
E xponents
8 -3*4
MD multiply and divide from left to right
8 - 12
AS add and subtract from left to right
-4
Answer:
-4
Step-by-step explanation:
When solving an expression, use PEMDAS!
4-2 = 2
2^3 (Cubed means to the 3rd) = 8
3 x 4
8-12 = -4
Allie has 10.25 in quarters and dimes.. how many dimes does she have
Answer:
(Depending on the available answers) Allie has 37 quarters and 10 dimes.
Step-by-step explanation:
37 quarters add up to $9.25 (37 x 0.25 = 9.25). 10 dimes add up to $1 (10 x 0.10 = 1). 37 quarters and 10 dimes add up to $10.25. There are other ways you can divide $10.25 into quarters and dimes (such as 21 quarters and 50 dimes) but this is just one of them. I hope this helped, good luck on your test/work!
Select the correct answer.
What is the solution to this system of equations?
x - 2y = 15
2x + 4y=-18
O A. x= 1, y= -6
B.
x= 1, y=-7
C. x= 3, y=-6
D. x= 3. y=-7
Reset
Next
Answer:
A. x=3, y= -6
Step-by-step explanation:
x - 2y = 15
2x + 4y= -18
Solving for x
x-2y=15
Subtract x from both sides
-2y= -x+15
Multiply both sides by -1
2y=x-15
Multiply both sides by 2
4y=2x-30
2x+4y= -18
Subtract 2x from both sides
4y= -2x-18
Combine equations:
-2x-18=2x-30
Add 2x to both sides
-18=4x-30
Add 30 to both sides
12=4x
4x=12
Divide both sides by 4
x=3
Solving for y
x-2y=15
Add 2y to both sides
x=2y+15
Multiply both sides by 2
2x=4y+30
2x + 4y= -18
Subtract 4y from both sides
2x= -4y-18
Combine equations:
-4y-18=4y+30
Add 4y to both sides
-18=8y+30
Subtract 30 from both sides
8y= -48
Divide both sides by 8
y= -6
Answer:
anwser c
Step-by-step explanation: