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maria [59]
3 years ago
15

Multiply (9 - 4i)(2 + 5i)​

Mathematics
1 answer:
LenaWriter [7]3 years ago
4 0

Answer:

38+37i

Step-by-step explanation:

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her teacher has informed her that her final answer is wrong. Explain to Jessley where she made a mistake and why
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3 years ago
Help with #7. Can someone show me step by step how to do please
aleksley [76]

Answer:


Step-by-step explanation:

9y + 12 = 4y - 10

Sub. 4y from both sides

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y = -2/5

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3 0
3 years ago
use a system of linear equations with two variables and two equations to solve. a number is 11 more than another number. twice t
Eva8 [605]

The value of required two numbers x and y are 7 and -4 respectively. These values are find out using Elimination method.

Let the required first number and second numbers be x and y respectively .

We have given that, one Number is more than other by 11

i.e., the difference of two numbers is equal to 11

x - y = 11. …..(1)

And twice the sum of the two numbers is 6 i.e.,

2(x + y) = 6 => 2x + 2y = 6 => x +y = 3 …….(2)

Now , equation (1) and (2) are linear equation with two variables x and y .

We shall solve above two equations and find out the value of two variables. Using Elimination method , In which value of one variable is find out by eliminate the second variable through their coefficient comparison.

Added the equation ( 1) and (2) we get, 2x = 14 => x = 7

Put the value of x in equation (1) we get,

7 – y = 11 => y = -4

Thus, we get the values of two variables x and y is 7 and -4 respectively.

To learn more about linear equation, refer:

brainly.com/question/21243732

#SPJ4

7 0
1 year ago
Can someone please help? This is difficult.
galina1969 [7]

They intersect at a point called the centroid. See the attached sketch.

4 0
3 years ago
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