What is the value of y2 – x4 when y = 9 and 2 =2?
Answers
Answer:
Not sure how the question goes.
Step-by-step explanation:
2Y - 4X
2(9) - 4(2) = 18 - 8 = 10
Or
Y^2 - X^4
(9)^2 - (2)^4 = 81 - 16 = 65
y2-x4
to solve this u need to place the variables for the given value
y= 9
x=2
(9)2-(2)4
9 times 2 is 18
2 times 4 is 8
18-8=10
or if it is
y^2-x^4
9^2- (2)^4
9^2=81
2^4=16
81-16 = 65
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Add 12 to me then add another 12 if you subtract 9 and then add 7 you get 24 what number am i
Mr. juan is three times old as his son eric. sum of their ages is 64. how old are they?
Solve by Elimination.x + 2y = 73x - 2y = -3
Answers
Answer:
B) -3
Step-by-step explanation:
The zeros of the function are found easily from the factors. They are 6 and -12. The x-coordinate is halfway between them, at (6 + (-12))/2 = -6/2 = -3.
If you want a formula, consider a quadratic with roots (zeros) p and q. Then it factors as
... y = (x -p)(x -q)
The line of symmetry through the vertex is also the line of symmetry between the roots, so has x-coordinate:
... x = (p+q)/2
___
In your problem, you have p=6, q=-12, so x = (p+q)/2 = -6/2 = -3 is the line of symmetry and the x-coordinate of the vertex.
The vertex of a parabola is the minimum or the maximum point on the parabola
The x-coordinate of the vertex is -3
The equation is given as:
Open brackets
Differentiate
Set to 0
Collect like terms
Divide both sides by 2
Hence, the x-coordinate of the vertex is -3
Read more about vertex at:
Answers
Answer:
x = 8, perimeter of triangle = 22 units
Step-by-step explanation:
the perimeter is the sum of the sides of the triangle , that is
x + x + 2 + x - 4 ( collect like terms)
= 3x - 2
the perimeter of a rectangle is calculated as
2 ( length + breadth )
= 2(x + 3) ← distribute parenthesis by 2
= 2x + 6
equate the 2 expressions for perimeter
3x - 2 = 2x + 6 ( subtract 2x from both sides )
3x - 2x - 2 = 2x - 2x + 6 ( simplify both sides )
x - 2 = 6 ( add 2 to both sides )
x - 2 + 2 = 6 + 2 ( simplify both sides )
x = 8
The perimeter of triangle is then
= 3x - 2
= 3(8) - 2
24 - 2
= 22 units
Answers
Answer:
y=3x+18
Step-by-step explanation:
Since slope-intercept form is y=mx+b, we first need to find the slope.
m=y2-y1/x2-x1
m=0-(-9)/-6-(-9)
m=9/3=3
Next we need to find b, or the y-intercept
to do that we plug in numbers to what we already have.
y=3x+b
0=-18+b
b=18
Now we put it all together.
y=3x+18
Answers
Answer:
The largest integer is x+2, or 31.
A. 3i-4j-2k
B. -14i-9j-4k
C. 5i +3j -4k
D. -4i -14j -9k
Find v x w if v=-3i-4j-8k & w=2i+6j+4k.
A. 12i -2j +3k
B. 8i +12j +32k
C. 32i -4j -10k
D. 10 i -8j +3k
Find the cross product <-6, 7, 2> x <8, 5, -3>. Is the resulting vector perpendicular to the given vectors?
A. <-31,-2,-86>;yes
B. <-37,-2,0>; no
C. <0,-86,-37>; yes
D. <-37, 0, -80>;no
Answers
v x w = 8 i - 24 j + 15 k + 10 j - 12 i - 24 k =
= - 4 i - 14 j - 9 k
Answer: D )
2.
v x w = -16 i - 16 j - 18 k + 12 j + 48 i - 8 k =
= 32 i - 4 j - 10 k
Answer: C )
3.
The cross product:
< - 6, 7, 2 > x < 8, 5, -3 > =
= - 21 i + 16 j - 30 k - 18 j - 10 i - 56 k =
= - 31 j - 2 j - 86 k = < - 31, - 2, - 86 >
Vectors are perpendicular if: cos ( u, v ) = 0
< - 6 , 7. 2 > * < -31, - 2, - 86 > = 186 - 14 - 172 = 0
< 8, 5 , - 3 > * < - 31, - 2, - 86 > = -248 - 10 + 258 = 0
Answer: A ) < - 31, - 2 , - 86 >, yes.