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Juliette [100K]
3 years ago
8

2. Write (2+5i)(3-1) as a complex number in standard form a+bi. real part + imaginary part

Mathematics
1 answer:
Burka [1]3 years ago
5 0

Answer:4+10i

Step-by-step explanation:

6+15i-2-5i

4+10i

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What is 45.13 rounded to the nearest one?
SCORPION-xisa [38]

Answer:

45

Step-by-step explanation:

8 0
3 years ago
I need to help with that
Bingel [31]
The ratio of people that can be served to milligrams of baking soda needed is:

Serving : Baking Soda
2 : 1600mg

Since you want 10 people, you can multiply this ratio by 5:5 to get 

10 people served = 8000mg needed

8000mg = 8 grams
3 0
4 years ago
Suppose that a sequence is defined as follows.a₁ = -4, an=3an-1+7 for n>2List the first four terms of the sequence.
maria [59]

The sequence is defined as

an = 3an - 1 + 7

This means that

a2 = 3(a(2 - 1) + 7

a2 = 3a1 + 7

From the information given ,

a1 = - 4

Thus,

a2 = 3 * - 4 + 7 = - 12 + 7

a2 = - 5

a3 = 3(a(3 - 1) + 7

a3 = 3a2 + 7

a3 = 3 * - 5 + 7 = - 15 + 7

a3 = - 8

a4 = 3(a(4 - 1) + 7

a4 = 3a3 + 7

a4 = 3 * - 8 + 7 = - 24 + 7

a4 = - 17

Thus, the first four terms of the sequence are

- 4, - 5, -

8 0
1 year ago
-2 (x + 3) &gt; 9 + 3x.<br>inequality​
spayn [35]

Answer:

x<-3

Step-by-step explanation:

-2(x+3)>9+3x - Distribute

-2x-6 > 9+3x - Subtract 3x to both sides

-5x-6 > 9 - Add 6 to both side

-5x > 15 - Divide -5 to both sides

Integer switches: x < -3 - Answer

Source: MathPapa

5 0
3 years ago
Which equation represents an exponential function that passes through the point (2, 80)?
Fudgin [204]

The function f(x) = 5(x)⁴, and f(x) = 5(4)ˣ represents the function that passes through the point (2, 80) option second and fourth are correct.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have; an exponential function that passes through the point (2, 80).

f(x) = 4(x)⁵

Plug (2, 80) in the abovew function:

f(2) = 4(2)⁵ = 128 (false)

f(x) = 5(x)⁴

Plug (2, 80) in the abovew function:

f(2) = 5(2)⁴ = 80 (true)

f(x) = 4(5)ˣ

f(2) = 4(5)² = 100 (false)

f(x) = 5(4)ˣ

f(2) = 5(4)² = 80 (true)

Thus, the function f(x) = 5(x)⁴, and f(x) = 5(4)ˣ represents the function that passes through the point (2, 80) option second and fourth are correct.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

3 0
2 years ago
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