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Butoxors [25]
3 years ago
5

Factor the expression. k2 + kf – 2f2

Mathematics
2 answers:
Lynna [10]3 years ago
5 0
Work: k^2+kf-2f^2
Factor
(K+2f)(k-f)
Answer: (k+2f)(k-f)
Check your work:
K+2f k-f
K^2+2kf-kf-2f^2
K^2+kf-2f^2

The answer is correct
Alex73 [517]3 years ago
5 0

Answer:

Factorized form of the given expression is (k + 2f)(k - f).

Step-by-step explanation:

The given expression is k² + kf - 2f² and we have to factorize the given expression.

k² + kf - 2f² = k² + 2kf - kf - 2f²

= k(k + 2f) - f(k + 2f)

= (k + 2f)(k - f)

So the factorized form of the expression is (k + 2f)(k - f).

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Which description best describes the solution to the following system of equations?
Ksivusya [100]
Y=-x/2+9
y=x+7
If we solve this system of equations, we can find the solution to the following system of equation.
we can solve this system of equation by equalization method.
-x/2+9=x+7
lowest common multiplo=2
-x+18=2x+14
-3x=-4
x=-4/-3=4/3

y=x+7=4/3  + 7=(4+7*3)/3=25/3

The solution is (4/3, 25/.3)

answer: Line y=-x/2+9 intersects line y =x+7
8 0
3 years ago
Read 2 more answers
(Please answer, 100 points)
Ymorist [56]

use the formula 2πr

  • 106.76
  • 300.96
  • 2×3.14×(1/2)×39 = 122.46
  • 78.5

the c bit I did the whole process cuz the diameter is given and for the d bit i thought what you were trying to say is 25 diameter.

hope it helps and don't forget to put the units wherever necessary.!!!!

5 0
3 years ago
What is Adele's error?
vaieri [72.5K]

Answer: She should have multiplied the total of all the choices.

Step-by-step explanation:

It wouldn’t make any sense to add them together.

6 0
4 years ago
Read 2 more answers
Can someone help me on these 4 problems. I don't know how to do them
Harman [31]
Question 84:
The given triangle is an isosceles triangle.
We have measure angle 2 = measure angle 3
We are given that angle 1 = 70°
We know that the sum of the interior angles of the triangle is 180.
This means that:
180 = angle 1 + angle 2 + angle 3
180 = 70 + angle 2 + angle 3
angle 2 + angle 3 = 110
Since both angles are equal, therefore:
measure angle 2 = 110/2 = 55°
We are given that:
measure angle 2 = x + 64
This means that:
x + 64 = 55
x = 55 - 64
x = -9

Question 85:
The given triangle is an isosceles triangle.
We have the two base angles are equal.
Since one of them is 30°, this means that the other is also 30°
We know that the sum of the interior angles of the triangle is 180.
This means that:
180 = angle 1 + angle 2 + angle 3
180 = 30 + angle 2 + 30
angle 2 = 120
We are given that:
measure angle 2 = 14x - 6
This means that:
14x - 6 = 120
14x = 126
x = 126/14
x = 9

Question 86:
The given triangle is an isosceles triangle.
We have the two base angles are equal.
Since one of the base angles is 40°
This means that the other one is also 40°
Therefore:
measure angle 2 = 40°
We are given that:
measure angle 2 = 47 + x
This means that:
47 + x = 40
x = 40 - 47
x = -7

Question 87:
The given triangle is an equilateral triangle. This means that all three interior angles are equal and each is measuring 60°.
Therefore:
measure angle 2 = 60°
We are given that:
measure angle 2 = x + 71
This means that:
x + 71 = 60
x = 60 - 71
x = -11

Hope this helps :)
8 0
4 years ago
Jenny is covering the top of her freshly made cake with a piece of aluminum foil. The diameter of the cake is 5 inches. What is
Rasek [7]

Answer:

Unrounded, it would be 19.625, and rounded it would be 19.63

Step-by-step explanation:

Following the formula pi r^2, I came up with this answer. Hope this helps!

3 0
3 years ago
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