Answers
Answer:
- 28Step-by-step explanation:
[tex]2 {x}^{2} - 4 {y}^{2} [/tex]
By putting the value of x = 2 and y = -3 then,
[tex] = ( 2 \times {2}^{2}) - (4 \times {( - 3)}^{2} )[/tex]
[tex] = (2 \times 4) - (4 \times 9)[/tex]
[tex] = 8 - 36[/tex]
= - 28 (Ans)
Related Questions
HELP PLEASE 24 POINTS
Answers
Since they are parallel they will never intersect. So there is no solution
What is the range of the function y = 3x + 2 when the domain is {-3, 0, 2}?
Answers
Answer:
{-7, 2, 8}
Step-by-step explanation:
We see that the domain is limited to three x-values: -3, 0 and 2. To find the range (which is the set of all y-values) we just need to plug-in these x-values and find the corresponding y-values.
So our equation is:
y = 3x + 2
Then we substitute for the x-values:
y = 3(-3) + 2
y = -9 + 2
y = -7
y = 3(0) + 2
y = 0 + 2
y = 2
y = 3(2) + 2
y = 6 + 2
y = 8
So our range would be {-7, 2, 8}.
please help me i really need this grade !
Answers
Answer:
C. 8
Step-by-step explanation:
still using the equation a^2 = b^2 = c^2
multiple choice pls help
A game is played with the following rules. Two ordinary number cubes, each with six sides labeled 1 to 6, are rolled. After each roll, a player is given a certain number of points depending on the outcome.
If the sum is 2 or 12, the player receives +5 points.
If the sum is 3 or 11, the player receives +2 points.
If the sum is any other number, the player receives -1 points.
What is the expected value of the number of points a player will receive after a roll?
-1/3
7/11
4/3
2
Answers
The surface area of a geometric solid is the amount of space inside the solid.
True or False
Answers
Answer:false
Step-by-step explanation:
Please help!! I don’t understand how to do this problem
Answers
Answer:
D.
Step-by-step explanation:
[tex]y = 3x \\ \frac{y}{3} = x \\ \\ \frac{3y}{3} + 2y = 45 \\ y + 2y = 45 \\ 3y = 45 \\ y = \frac{45}{3} \\ y = 15 \\ \\ x = \frac{y}{3} \\ = \frac{15}{3} \\ = 5[/tex]
$80 is 25% of what amount?
Answers
5. Writing to Explain How many 2-inch cubes could fit inside the
rectangular prism shown in Exercise 1? Explain how you know.
Answers
Range includes all but what
Answers
What does the 75th term look like of 6,9,12
Answers
Answer:
228
Step-by-step explanation:
We are adding 3 each time so general rule is
Tn= 3n + 3
Therefore
T= 3(75)+3
= 228
Answer:
228
Step-by-step explanation:
I don't need brainliest. What the other guy said with an explanation, i didn't want to copy & paste to make him think i took the explanation from him. But hey, we hope this helps
define radius of the circle
Answers
Answer:
Radius is from the center of a circle to the end
Step-by-step explanation:
You need radius to find area
Answer:
The radius of a circle is the length of a line from the middle of a circle to the circumference.
Step-by-step explanation:
Difference of two whole numbers is 33 and its ratio is 2:5 then find those
numbers.
Answers
Answer:
Step-by-step explanation:
Let the two whole numbers be 5x and 2x then
by the question
5x - 2x = 33
3x = 33
x = 33/3
x = 11
Therefore the numbers are
5x = 5*11 = 552x = 2*11 = 22hope it helps:)
Deshad runs a river tubing company that serves 300 customers a day during sunny, summer days. He
knows that 45% of the customers rent life jackets. Suppose that Deshad calculates the daily proportion
of customers who rent life jackets from his sample of 300. We can assume the customers each day
represent a random sample,
Which of the following distributions is the best approximation of the sampling distribution of p?
Each distribution uses the same scale.
Choose 1 answer.
0.45
3 of 9
Answers
Answer:
Step-by-step explanation:
what is the solution of x-6=2
Answers
Answer:
x=8
Step-by-step explanation:
You have to add 6 to both sides in order to get x by itself.
i need some help on my exit ticket lol
Answers
Answer:
The area of a circle can be found using the formula [tex]A=\pi r^2[/tex]
Step-by-step explanation:
Please help with question #8! BRAINLIEST to first correct answer!
Answers
Refer to the figure for Exercises 21 & 22
22. Which pair of angles are corresponding angles?
A 21 and 24 C 22 and 25
B 2/6 and 28 D 28 and 27
23. Which pair of angles are alternate exterior angles?
A 4 and 8 C23 and 27
B 22 and 25 D 21 and 24
Answers
what is the following product of assume Y is greater than or equal to 0 square root y to the third Times Square Root why 2/3
Answers
Step-by-step explanation:
[tex] \sqrt{y3} \times \sqrt{y3} [/tex]
[tex] \sqrt{y3 \times y3} [/tex]
[tex] \sqrt{y3 + 3} [/tex]
[tex] \sqrt{y6} [/tex]
Consider the arithmetic series 3 + 7 + 11 + 15 + 19 + 23 + 27+ ....
(ii) Express Tin terms of S1
please help me
Answers
Answer:
105
Step-by-step explanation:
105
Which comparison is not correct?
-7 > -9
-2 < -9
8 > -9
-8 < -4
Answers
Answer:
a
Step-by-step explanation:
What is the distance between -70 and -30 on
Answers
Answer:
-40 I wanna say
Step-by-step explanation:
Answer:
Brainliest??
Step-by-step explanation:
40 units
In a group of 18 pupils, 2 play the flute only.
6 play the piano only.
7 play both instruments.
A student is chosen at random.
What is the probability the student plays neither instrument
Answers
Answer:
flute
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
6 + 7 + 2 = 15
18 - 15 = 3
Hope this is useful
For every 3 people that prefer soda, 7 people prefer water. If 18 people prefer soda, how many prefer water?
Answers
Answer:
42
Step-by-step explanation:
3 and 7
18 and ?
(3x6= 18) therefor you multiple 7 and 6 which gets you 42. The answer is 42.
Find the discriminant and the number of real roots for this equation.
x2 + 2x + 7 = 0
A. 28; two real roots
B. -24; no real roots
C. -24; one real root
D. 28; one real root
SB
Answers
Which equation can be rewritten as x + 4 = x2?
Assume x>0.
O √x+2=x
O √x+2 = X
O √x+4 = X
O √x2 + 16 = X
Answers
Which equation can be rewritten as x + 4 = x2?
Right ans is √x+4 = x
❣️
The equation x + 4 = x² will be written as √( x+2 ) = x. The correct option is B.
What is an expression?In mathematics, expression is defined as the relationship of numbers, variables, and functions using mathematical signs such as addition, subtraction, multiplication, and division.
The given expression is x + 4 = x². The given expression will be simplified as below,
x + 4 = x²
Remove the square and apply the square root on the left side of the equation.
x = √ ( x + 4 )
Therefore, the equation x + 4 = x² will be written as √( x+2 ) = x. The correct option is B.
To know more about an expression follow
https://brainly.com/question/25299241
#SPJ7
If x = 3 and y= -2, then
7x — Зу
2x + y
Answers
Answer:
(7 *3 -3*(-2))/(2*3+(-2)) = 6.75
Step-by-step explanation:
please help me, i have no clue what to do all it says is find the slopeof the line that passes through the given two points using ratio method.
Answers
Answer:
Δy = 9
Δx = -6
Slope = -3/2
Step-by-step explanation:
The slope formula is the change in y (Δy) over change in x (Δx).
Δy = [tex]y_2-y_1[/tex]
Δx = [tex]x_2-x_1[/tex]
We are given the points of (5,-3) and (-1,6).
[tex]m=\frac{6-(-3)}{-1-5}=\frac{9}{-6}=\boxed{-\frac{3}{2}}[/tex]
The slope is -3/2.
Hope this helps.
Help fast please!!!!!!
Answers
Answer:
to find the long side ( hypotneuse) you use the equation a^2+b^2=c^2 where c^2 is the hypotneuse. In this case 7^2 + 6^2=c^2
49+36=c^2
85=c^2
take the square root of 85 to get c
X= 9.2
Can someone pleaseeee help and if you’re correct i’ll give brainliest
Answers
Answer:
Area of the sector = [tex]\frac{\pi }{8}[/tex] cm²
Step-by-step explanation:
Measure of the given arc = 45°
Central angle formed by the arc = 45°
Formula to be used,
Area of the sector bounded by the arc = [tex]\frac{\text{Central angle}}{360}\times \pi r^{2}[/tex]
Here, r = radius of the circle
Area of the sector = [tex]\frac{45}{360}(\pi)(1)^2[/tex]
= [tex]\frac{\pi }{8}[/tex] cm²
What is the value of x in the figure below?
Answers
Answer:
x = 10
Step-by-step explanation: