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Rus_ich [418]
3 years ago
13

This is a sat practice. need help ​

Mathematics
2 answers:
Mila [183]3 years ago
5 0
So you would have

(7+3i)+(-8+9i)

You go ahead and rewrite it like this

7-8+3i+9i

And then combine like terms

-1+12i

So your answer is A
nadya68 [22]3 years ago
4 0

Answer:

The answer is A) -1 + 12i

Step-by-step explanation:

(7 + 3i) + (-8 + 9i)

(7 - 8) + (3 + 9)i

7 - 8 = - 1

3 + 9 = 12

- 1 + 12

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4 years ago
A gift box is in the shape of a trapezoidal prism with base lengths of 7 inches and 5 inches and a height of 4 inches. The heigh
jek_recluse [69]
First of all there are multiple formula's to get the volume of a trapezoidal prism:

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Putting this into the equation:  V=(1/2 * (7 <span>+ 5) * 4) * 8
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6 0
4 years ago
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bezimeni [28]
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3 0
3 years ago
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Question: "Solve for volume and round to the nearest tenth, if necessary use 3.14."​
ira [324]
When I solved it I got 26648.8
3 0
3 years ago
a polygon has an area of 225 square meters. A similar polygon is created with an area that is triple the first. By what factor i
GuDViN [60]
The area of the original polygon is:
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The length of each side increased by:
 
k = (3) ^ (1/3)
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