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Lynna [10]
4 years ago
6

(-7 – 3i)+(5-7i) what’s the answer

Mathematics
2 answers:
Ede4ka [16]4 years ago
7 0
Combine like terms
(-7-5) + (3i-7i)
-12 + -4i
Solve for i:
-12+-4i
(Divide by -4 on both sides.)
3+i
3+i is the correct answer.
DerKrebs [107]4 years ago
4 0

to simplify:

-10+(-2)

to solve:

-12

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Kyle earned 4 times as much as Ken last summer. If they earned a total of $750, how much did they each earn?
Sholpan [36]

Answer:

600, 150

Step-by-step explanation:

Kyle is x

ken is y

x = 4y

x+y = 750

replace x with 4y

4y + y = 750

5y = 750

y = 150

so ken earned 150

x + 150 = 750

x = 600

so Kyle earned 600

6 0
3 years ago
An old truck has a fuel efficiency rating of 12 mpg. What is the cost
andrew-mc [135]

Answer:

The cost of 5 gallons of fuel would be 5x assuming the cost of 1 gallon to be x.

Step-by-step explanation:

An old truck has a fuel efficiency rating of 12 mpg.

We have to find the cost of gasoline that will be used up after we drive 60 miles.

To drive 60 miles , it uses 5 gallons.

let the cost of 1 gallon of fuel be x.

We have to find the cost of 5 gallons of fuel.

So the cost of 5 gallons of fuel = 5\times coat of 1 gallon of fuel

                                                      = 5x

5 0
4 years ago
Which option is equal to 7 1/5
masya89 [10]

Answer:

<h2><em><u>D. is the answer</u></em></h2>

Step-by-step explanation:

Question:

7^1/5

The number given has an exponent of a fraction: fraction exponent = 1/5

<h2><em><u>So, when you have a fraction - you always have a square root - Important!!</u></em></h2>

Since the top is one, the number 7 stays the same. = 7^1 = 7

The bottom is a 5. This means it is to the fifth root.

Answer = D

Hope this helped,

Kavitha

8 0
3 years ago
Read 2 more answers
—2t(t+1),<br> t &lt; 6<br> 5t<br> g(t) =<br> =<br> ,6 6<br> 2t2 + 3t<br> t&gt; 12<br> g(12) =
yuradex [85]

Answer:to Let f(t) = 6, g(t) = −5t, and h(t) = 2t2

Step-by-step explanation:

3 0
3 years ago
What is the number of square units in the area of the triangle is vertices are points A ( 2,0), B( 6,0) and C (8,5)
lakkis [162]

From points (2, 0) and (6, 0), you can get base = 6 - 2 = 4.

From point (8, 5), you get a height of length 5.

A = bh/2 = 4 * 5/2 = 10

Area = 10 square units

3 0
3 years ago
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