Answer:
ad
Step-by-step explanation:
ddda
x-2y=3, x^2-2y=3, x^2-2xy+4y^2=11, find the value of x^2y-2xy^2
This is a system of three equations with two unknowns, x and y. To solve it, we can use the method of elimination. First, we can eliminate y by subtracting the first equation from the second equation:
x^2-2y=3 - (x-2y=3) => x^2-x=0
Then we can factor the resulting equation and find the values of x:
x^2-x=0 => x(x-1)=0 => x=0 or x=1
Next, we can substitute these values of x into any of the original equations and find the corresponding values of y. For example, using the first equation:
x-2y=3 => 0-2y=3 => y=-3/2 when x=0 x-2y=3 => 1-2y=3 => y=-1 when x=1
Finally, we can substitute these values of x and y into the expression x2y-2xy2 and evaluate it:
x2y-2xy2 => 02(-3/2)-2(0)(-3/2)2 => 0 when x=0 and y=-3/2 x2y-2xy2 => 12(-1)-2(1)(-1)2 => -3 when x=1 and y=-1
Therefore, the value of x2y-2xy2 can be either 0 or -3 depending on the values of x and y.
Yvonne used 5 tablespoons of butter for a recipe. For a second recipe she used 10% less butter than she did for the first recipe. The total amount of butter, in tablespoons, she used for both recipes can be found using the expression below:
5 + 5 – 5(10%)
Which other expression can be used to find the amount of butter, in tablespoons, she used for both recipes?
A. 10 – 5%
B. 10 – 50%
C. 5 + 5(0.9)
D. 5 + 5(1 – 10)
Identify the coefficient(s) in the expression: 9 + 4x +y
Answer:
4 and if its more than one than its 4 and 1 bc there is always a 1 next to a variabe where you cant see a number
Step-by-step explanation:
coefficient is the number besides the variable
if you were to roll the dice one time what is the probability it will NOT land on a 4?
Answer:
5/6 because there is six sides and you take away the 4 .
Step-by-step explanation:
Answer:
5/6
Step-by-step explanation:
total no.of trials= 6 (because dice has six numbers )chances of not getting 4 is 5
hence the answer is 5/6
Show a model that shows 3 items being divided equally for 4 people. How much will each person have?
Answer:
0.75
Step-by-step explanation:
3 divided by 0.75 is 4 which can be split depending on the item
Can somebody please help me with this ASAP!!!
Answer:
15.80
Step-by-step explanation:
Rafael is buying 1 and 3 over 8 pounds of salad at a salad bar that charges the amount shown. Salad bar: $6.80/lb
(1) Show that the amount of salad is a rational number.
(2) Write the amount of salad as a decimal.
(3) What will Rafael pay for the salad?
Please, please, please... please help me on this.
After you answer, please explain. Be reasonable, and please try.
Answer: for 2 it is 1.375 and for 3 it is 9 dollars and 55 cents
Step-by-step explanation:
Calculate the average velocity of a dancer who moves 5 m toward the left of the stage over the course of 15 s. ** Velocity = displacement/time
A. 3 m/s
B. 1/3 m/s
C. 1/3 m/s west
D. 3 m/s west
plzzz help A.S.A.P.!!!!
Answer:
V = Displacement / Time
V = 5 m / 15 s
V = 1/3 m/s
-hope this helped
What is the solution to this equation?
−1/5(x+1 3/4)=−2 1/
2
Responses
x=21 1/4
x equals 21 and 1 over 4
x=14 1/4
x equals 14 and 1 over 4
x=10 3/4
x equals 10 and 3 over 4
x=3 3/4
I WILL GIVE BRAINLYEST
Answer:
10 3/4
Step-by-step explanation:
\(x + \frac{7}{4} = - \frac{5}{2} \times - \frac{5}{1} \\ x = \frac{25}{2} - \frac{7}{4} \\ x = \frac{43}{4} \\ x = 10 + \frac{3}{4} \)
Help plssssssssssssssssssssssssssss
Answer:
Step-by-step explanation:
Substituting x and y values into the equations, we can get the equation
y = 7 -3x
slope: -3
Answer:
y=7-3x; m= -3; b= 7
Step-by-step explanation:
First to find the slope you use the formula m(slope)= (y2-y1)/(x2-X10
to get the values for (x1,y1) you can pick any pair of x and y values from the table and the same goes for (x2,y2). After that you plug the values into the formula for slope which gives you -3.
For example: (x1,y1) can be (0,7) and (x2,y2) can be (1,4)
m=(4-7)/(1-0)
m= -3/1
m= -3
From there finding the y value is very simple, pick any pair of x and y values for the table and plug them into the equation for slope intercept form, y=mx+b plug the x value in for x, the y value in for y, and the slope we got earlier in for m. b is the variable for the y intercept, which is what we are now trying to find. so once we have plugged in all of our values, we just simplify the equation
(0,7)
y=mx+b
7= -3(0)+b
7= b
Now that we have both our slope and y intercept we can just plug them into y=mx+b and then we have the equation of the relationship;
y=7-3x which can also be written as y= -3x+7
(will give branliest)Given a sphere with a diameter is of 6 cm, find its volume to the nearest whole number
Answer:
Here’s the answer Volume of a sphere with diameter 6 cm =?
Step-by-step explanation:
Diameter of sphere => 6 cm therefor, Radius =3 cm volum of the spher = 4/3 and the pie sign r to the 3 power = 4/3 x 3.14 x 3 with the power of 3 = 4/3 x 3.14 x x 3x3 x 3 = 4 x 3.14 x 3.14 x 3 x 3 = 113.04cm cubed Thus, volume of the sphere = 113.04 cu. cm
Ram is running a bakery. He has made a street sign to direct people to his bakery. He painted one side of the post and sign. What is the painted area? 10 in 10 in 6 in 45 in 5 in
A. 225 square inches
B. 355 square inches
C. 385 square inches
D. 275 square inches
Answer:
Step-by-step explanation:
d
The average person's head has about 100,000 strands of hair.
What is that in scientific notation?
PLS HELP WORTH 35 POINTS!!
in wich of the tables are x and y inversely proportional
A
x=1,2,3,4
y=6,3,2,1.5
B
x=2,3,5,7
y=7.5,5,3,2
C
x=1,3,4,24
y=24,8,6,1
D:
x=0.1,0.3,25,100
y=200,40,0.8,0.2
Answer:
A, C
Step-by-step explanation:
If it is inversely proportional then y = k/x
Let's try one by one for the options. (im replacing y and x in the equation and finding k to see if k is the same all throughout)
A.
6 = k/1 (k=6)
3 = k/2 (k=6)
2 = k/3 (k=6)
1.5 = k/4 (k=6)
Yes! It's the same everywhere so this is correct!
B.
7.5 = k/2 (k=15)
5 = k/3 (k=15)
3 = k/5 (k=15)
2 = k/7 (k=14)
For the last one k is not the same so nope. It is wrong.
C.
24 = k/1 (k=24)
8 = k/3 (k=24)
k = 6×4 = 24
k = 24×1 = 24
This is correct too.
D.
k = 0.1×200 = 20
k = 0.3×40 = 12
k = 0.8 × 25 = 20
We can already see that k is not the same everywhere.
Only A and C, x and y are inversely proportional for all of the values
Answer: c
Step-by-step explanation:
What is the interquartile range of this data?
Enter your answer in the box.
Answer:
I thank it is 7
Step-by-step explanation:
hope this help if it is wrong please let me now
Someone help me please
Answer: 5/22
Step-by-step explanation:
simplify at the end
Answer:
the answer is 11/26
Step-by-step explanation:
The Probability that draw results in a wild card 11/26.
What is Probability?
Probability is possibility deals that "occurrence chance random event".
According to the question,
Let 'X' be the random variable drawing wild card.
Number of cards in a deck = 104
From one replacement we get 44 cards
Formula for Probability P(E) =
= = =
P(E) = .
Hence, The Probability that draw results in a wild card 11/26.
Learn more about Probability here
Is the graph above proportional or non-proportional?
Answer:
it's proportional
Step-by-step explanation:
it starts at (0,0) and it's a straight line
UWU
Answer:non proportional
Step-by-step explanation:
Because I just did that in class
this is the most childish thing my teacher has given us. pls help i am 1 to lazy to do it and 2 i don't understand it because it is 12:30 am and my brain is not working properly :)
( ill have another post for the last 3 because brainly will only let me put 5 on here)
Help Please, There are 5 rectangular flower gardens each measuring 16 feet by 13 feet in a rectangular city park measuring 90 feet by 140 feet. How many square feet of the park is not used for flower gardens?
Answer:
11560 ft squared
Step-by-step explanation:
16 x 13 = 208
208 x 5 = 1040 ft2
1040 ft 2 is how much space used
90 x 140 = 12600 ft2
12600 ft2 is all of the space
12600 - 1040 = 11560 ft squared
Math needed in 20-30 mins Pls
Answer:
the two accounts don't compare and account A earned 180
Step-by-step explanation:
interest =beginning amount or principal amount *rate *time in years /100 so that would be 1500*4*3/ 100 and 1500*6*1.9/100
please help me i will give brainliest to first person to anwser.
Answer:
The first option, V ≈ 1607.7 in²
Step-by-step explanation:
Find the volume of the given cylinder.
\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)
Given:
r = 8 in
h = 8 in
π = 3.14
Find:
V = ?? in³
\(\hrulefill\)
Now solving,
Substitute the given values into the formula:
=> V = (3.14)(8)²(8)
Using a calculator to simplify:
=> V = 1607.68 in²
Rounded to the nearest tenth:
∴ V ≈ 1607.7 in²
Thus, the first option is correct.
Convert -3x + 2y = 10 into slope-intercept form.
y = 2/3x + 5
y = 3/2x + 5
x = -2y + 10
y = 3/2x - 5
1.Amit buys a pair of jeans for $33. He must pay 7% sales tax. He gives the cashier $40. How much change does he receive back?
2. Harold buys a backpack that costs $24.80. It is on sale for 25% off. Harold also has a coupon for an additional 10% off the lowest price. What is the final price of the
backpack (not including tax)?
3. Sarah buys a book for her music lessons that cost $24. It is on sale for 15% off, and she must pay 5% sales tax. What is the final price of the book?
4. Erik buys carrots and dip for a class snack. The carrots are $3.80, and the dip is $2.60. Erik has a coupon for 5% off his groceries. He does not need to pay tax. He gives the cashier $20. How much change does he receive back?
5. Liam buys a new TV that cost $360. The TV is on sale for 40% off, and the store is offering an additional 20% off all sale items. How much does Liam save on the TV?
Answer: The answer is $200
Step-by-step explanation:
Answer:
$200
Step-by-step explanation:
i took the test and got an a
Evaluate 4 - x, when x = -6
Answer:
10
Step-by-step explanation:
4--6
4+6=10
HEELPPEEPPPPPPPP! please and thank you .
Answer:
Answer is number b) corresponding angles
because one angle is inside the transversal and another is outside the transversal . They are lying in same side of transversal .
Please answer if you know only, question is down below, thanks :)
Answer: Option B
Step-by-step explanation:
The reason it is option B is because option A shows that only 100 bags of chips every 2 hours while the description said 100 bags of chips were made every hour.
Option B shows the correct amount of chips made in 1 hour.
40 points to whoever get these right!! <3
{11, 14, 22}
Step-by-step explanation:Triangle Inequality Theorem states that two sides of a triangle must be greater than the third side.
Using this method, the answer is {11, 14, 22} because 11+14>22, 11+22>14, and 14+22>11
[2] Answer:x = 67°
Step-by-step explanation:Same-side interior angles are supplementary.
x° + 113° = 180°
x° = 180° - 113°
x = 67°
[3] Answer:r = 2°
Step-by-step explanation:The little box represents 90 degrees, meaning that these angles are complementary.
9r + 2° + 70° = 90°
9r + 72° = 90°
9r = 18°
r = 2°
Multiply the pairs of numbers and match them with their products. Tiles (-5)(4.2) (-7)(-3) (4) (5) (2.5)(-9) Pairs 22.5 21 -22.5 -21 111
Here are the pairs matched with their products:
- (-5)(4.2) matches with -21
- (-7)(-3) matches with 21
- (2.5)(-9) matches with -22.5
Pairs (4) and (5) do not have corresponding products in the given options.
Explain the cosine rule and sine rule while also saying how to use it and provide examples (keep it in simple terms)
Answer:
Sure, I'll explain the cosine rule and sine rule in simple terms:
The cosine rule (also known as the law of cosines) is used to find the length of a side or the measure of an angle in a triangle given the lengths of the other sides and the angle between those sides. It states that c^2 = a^2 + b^2 - 2ab cos(C), where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.
Here's an example of how to use the cosine
Suppose we have a triangle with sides a=6, b=8, and an angle between them c=45 degrees. We want to find the length of the remaining side of the triangle, side a.
Using the cosine rule:
a^2 = b^2 + c^2 - 2bc * cosA
where A is the angle opposite side a, we can plug in our values and solve for a:
a^2 = 8^2 + 6^2 - 2(8)(6) * cos(45)
a^2 = 64 + 36 - 96 * 0.707
a^2 = 10.56
a = sqrt(10.56)
a = 3.25 (rounded to two decimal places)
Therefore, the length of side a is approximately 3.25 units.
Answer:
Step-by-step explanation:
help me anwser this please
Answer:
Step-by-step explanation: