What is the value of x in this simplified expression? (-j)^-7=1/(-j)^x

Answers

Answer 1

Answer:

$x=7\n\n\text{because}\n\na^(-n)=(1)/(a^n);\ a\neq0\n\n(-j)^(-7)=(1)/((-j)^7)$

$\text{Minus in a power means inverse.}$

$a^(-1)=(1)/(a)\n\n(-j)^(-7)=(-j)^(7\cdot(-1))=\left[(-j)^7\right]^(-1)=(1)/((-j)^7)\n\n\text{Used:}\n\n(a^n)^m=a^(n\cdot m)$

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Which equation does not represent a linear function of x?

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The floor of a rectangular meeting area was waxed and everyone needs to stay out. The length of the area is 5 meters. The width of the area is 9 meters. Which is the correct unit of measurement to use when figuring how much tape is needed to surround the waxed area?

Answers

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If the sphere shown above has a radius of 4 units, then what is the approximate volume of the sphere? A.
334.93 cubic units
B.
21.33 cubic units
C.
100.48 cubic units
D.
267.95 cubic units

Answers

Volume of the Sphere is D. 267.95 cubic units

Volume of a sphere can be found by multiplying the fraction of 4/3 to the Pi and the cube of the radius.

V = 4/3 * π * r³ where r = 4 units ; π = 3.14

V = 4/3 * 3.14 * 4³
V = 4/3 * 3.14 * 64
V = 4/3 * 200.96
V = 267.95 cubic units

Answer:

267.95

Step-by-step explanation:

cause it is,Trust

378 x 6 using place value with regrouping

Answers

4 4
378
× 6
-------- 8×6=48
2268. 7×6= 42+4=46
6×3=18+4=22

PLEASE HELP IM TIMED Joy is going to a sub shop for a sandwich. At the restaurant, she can choose either a roll (R), bread (B), or a wrap (W). There are two meat choices, ham (H) and turkey (T), and 2 kinds of cheese, Swiss (S) and American (A). Before she goes, Joy wants to make a list of her choices. If she chooses one item from each selection, which will be part of her list? A. RBW, RBH RBT, RBS, RBA B .RSA, BSA, RHT, BHT, HSA C. RH, RT, BH, BT, WH D. RHS, RHA, RTS, RTA, BHS

Answers

Answer:

its D

Step-by-step explanation:

i was to dumb and answered it wrong and it showed that it was d lol

How do you write 4.293 in expanded form?

Answers

4.000 plus 200 plus 90 plus 3

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