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lord [1]
3 years ago
6

Which expression is equivalent to (4 + 7i)(3 + 4i)?

Mathematics
1 answer:
ANTONII [103]3 years ago
4 0

Answer:

the answer is -16+37i

Step-by-step explanation:

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1:750 scale model of the Sydney Opera House after a trip to Australia. The length of the model is 24.4 centimetrers. Find the ac
vesna_86 [32]

Answer:

183 meters

Step-by-step explanation:

A 1:750 scale model means that each cm on the model corresponds to 750 cm of the actual Sydney Opera House. If the model is 24.4 centimeters long, the actual Opera House has a length of:

x = 24.4*750\\x=18,300\ cm\\x=183\ m

The actual length of the Sydney Opera House is 183 m.

6 0
3 years ago
How can i identify a slope
Nonamiya [84]

Answer:

Rise over Run.

Step-by-step explanation:

If it's on a line on a graph you count how many it goes up until it's aligned with the next point and then you count how ever many over until it hits it. So it could be 2 up and 4 over making the slope 2/4.

I'm sorry that might not make much sense I'm bad at explaining but let me know if that helps at all!!

3 0
3 years ago
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Show that det(A) = 0 without directly evaluating the determinant. A = [-4 1 1 1 1; 1 -4 1 1 1; 1 1 -4 1 1; 1 1 1 -4 1; 1 1 1 1 -
Anuta_ua [19.1K]
You could interpret them as system of equation and answer the question easily

from A 

-4x + y + x + w =1

write in same form from A 

as this system has five variables and four of them are unknowns it means the unique solution is not possible 

So, det (A) = 0



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3 years ago
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Which rule explains why these triangles are congruent?
ivanzaharov [21]

Answer:

These triangles cannot be proven congruent.

3 0
3 years ago
Is -5x+2-4=2x an expression or an equation
jek_recluse [69]

Answer is expression

Step-by-step explanation:

3 0
4 years ago
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