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Ksivusya [100]
3 years ago
5

Kiara is covering part of this rectangular box with duct tape. She is covering the

Mathematics
2 answers:
PolarNik [594]3 years ago
8 0

Answer:

my big  brother had the same question so ill ask him to help u

Step-by-step explanation:

Kamila [148]3 years ago
3 0
Hope it helps man by the way the formula for lateral surface area is 2x(lh+wh)

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Require help with this question
user100 [1]
A) There are a number of ways to compute the determinant of a 3x3 matrix. Since k is on the bottom row, it is convenient to compute the cofactors of the numbers on the bottom row. Then the determinant is ...
  1×(2×-1 -3×1) -k×(3×-1 -2×1) +2×(3×3 -2×2) = 5 -5k

bi) Π₁ can be written using r = (x, y, z).
  Π₁ ⇒ 3x +2y +z = 4

bii) The cross product of the coefficients of λ and μ will give the normal to the plane. The dot-product of that with the constant vector will give the desired constant.
  Π₂ ⇒ ((1, 0, 2)×(1, -1, -1))•(x, y, z) = ((1, 0, 2)×(1, -1, -1))•(1, 2, 3)
  Π₂ ⇒ 2x +3y -z = 5

c) If the three planes form a sheath, the ranks of their coefficient matrix and that of the augmented matrix must be 2. That is, the determinant must be zero. The value of k that makes the determinant zero is found in part (a) to be -1.

A common approach to determining the rank of a matrix is to reduce it to row echelon form. Then the number of independent rows becomes obvious. (It is the number of non-zero rows.) This form for k=-1 is shown in the picture.

5 0
3 years ago
What is the inequality shown with image attached
Mariana [72]

Answer:

-3>=x this is because the circle is closed as well as the arrow going the opposite from -3

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
3x^2 + 2x-4 = 0 help
igomit [66]

Answer:

I dont know

Step-by-step explanation:

how to answer that

5 0
2 years ago
Read 2 more answers
What is 2.5 in simplest form
vfiekz [6]
2.5 still if you make it a fraction it would be 2 and 1 1/2 so you can't simplify that any more
6 0
3 years ago
Read 2 more answers
PLS HELP ME WITH THIS ALGEBRA!
artcher [175]

Answer:

  • 120 g

Step-by-step explanation:

A salt solution contains 10% salt and weights 80g.

<u>Salt content of the solution is:</u>

  • 80*0.1 = 8 g

<u>4% solution has 8 g salt, total solution is:</u>

  • 0.04x = 8
  • x = 8/0.04 = 200 g

<u>Water to be added:</u>

  • 200 - 80 = 120 g

6 0
3 years ago
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