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mina [271]
2 years ago
7

Simplify the expression to a + bi form: (-7 - 3i) + (-5 + 10i)

Mathematics
2 answers:
Harman [31]2 years ago
6 0

Answer:

-12+7i

Step-by-step explanation:

(-7-3i)+(-5+10i)

-7-3i-5+10i

-7-5-3i+10i

-12-3i+10i

-12+7i

Please mark me as Brainliest if you're satisfied with the answer.

nignag [31]2 years ago
6 0

Answer:

→( - 7 - 3i) +( -  5 + 10i) \\  =  - 7 - 3i - 5 + 10i \\  =  -  7 - 5 - 3i + 10i \\  =  \boxed{ - 12 + 7i}✓

  • -<u>12 + 7i</u> is the right answer.
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Answer is (0,3)

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3 years ago
The area of the conference table in Mr. Nathan’s office must be no more than 175 ft2. If the length of the table is 18 ft more t
valentina_108 [34]
The answer is  0 < x <span>≤ 7 
</span>
First, we know that width =  x
Which means that length = x +18

So, the possible equation for the Table's area is

X (X + 18)  ≤ 175

X^2 + 18x - 175  <span>≤ </span>0

Next, we need to calculate is by using complete square method
x^2 + 18x + 81 <span>≤ 175 + 81

(x + 9)^2 </span><span>≤ 256

|x + 9| </span><span>≤ sqrt(256)

|x + 9| </span><span>≤ +-16

-16 </span>≤ x + 9 <span>≤ 16

</span>-16 - 9 ≤ x <span>≤ 16 - 9

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Since the width couldn't be negative, we can change -25 with 0,

so it become
</span> 0 < x ≤ 7 
7 0
3 years ago
Determine the ordered pair that satisfies the equation, 5x + 2y = 7.
AveGali [126]

Answer:

None of the first 4 do. so I guess the answers E.

Step-by-step explanation:

8 0
3 years ago
Miguel sells a house for 275,000. His commission for the sale is 7,562.5
valentinak56 [21]

Answer:

2.75\%

Step-by-step explanation:

To find what percentage a certain value is of another value, simply divide the first value by the second, respectively.

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\frac{7,562.5}{275,000}=0.0275

To convert from a decimal to a percentage, multiply by 100:

0.0275 \cdot 100=\boxed{2.75\%}

7 0
3 years ago
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This is the concept of linear proportionality, we are required to calculate the actual length between two buildings which have a distance of 1.7 cm when drawn to scale of 1 cm: 2.5 km. This can be calculated as follows;
actual distance= (distance on the map)*(scale factor)
actual distance=1.7*2.5=4.25 km

The answer is 4.25 km
4 0
3 years ago
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