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dsp73
3 years ago
15

Simplify the expression (9 + 2i)(9 − 2i). 81 − 18i 81 + 18i 77 85

Mathematics
1 answer:
Ymorist [56]3 years ago
5 0

Answer:

=85

Step-by-step explanation:

I'm pretty sure I'm correct

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defon

Answer:

do you have an attachment or anything?

Step-by-step explanation:

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2 years ago
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A household aquarium tank in the shape of a rectangular prism has a base length of 242424 inches (\text{in})(in)(, start text, i
mars1129 [50]

Answer:

The absolute change in the height of the water is 9.5 inches

Step-by-step explanation:

Given

l =24in --- length

w = 15in --- width

h =12in --- height

V_1 = 900in^3 --- the volume removed

Required

The absolute change in the height of the water

First, calculate the base area (b):

b = l * w

b =24in * 15in

b =360in^2

The height of the water that was removed is:

<em />H = \frac{V_1}{b}<em> i.e. the volume of the water removed divided by the base area</em>

H = \frac{900in^3}{360in^2}

H = \frac{900in}{360}

H = 2.5in

The absolute change in height is:

\triangle H = |h - H|

\triangle H = |12in - 2.5in|

\triangle H = |9.5in|

\triangle H = 9.5in

8 0
2 years ago
a contractor is looking at plans for building a storage shed. the side of the building on the plans is .75 inches long. if the s
Svetllana [295]

Answer:

108 in.

Step-by-step explanation:

12 he converted into inches would be 144 inches. 144×.75 is 108.

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3 years ago
WILL GIVR YOU BRAINLEST PLEASE HELP ASAP!
netineya [11]
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What is each expression written using each base only once? 8^8 · 8^4
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3 years ago
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