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almond37 [142]
3 years ago
14

Multiply 7i(5-9i) Please Help!

Mathematics
1 answer:
AleksandrR [38]3 years ago
3 0

1. Distribute

7i × 5 + 7i × -9i

2. Simplify 7i × 5 to 35i

35i + 7i × -9i

3. Simplify 7i × -9i to -63ii

35i - 63ii

4. Use the Product Rule

35i - 63i^2

5. Use the Square Rule

35i - 63 × -1

6. Simplify 63 × -1 to -63

35i - (-63)

7. Simplify brackets

35i + 63

8. Regroup terms

63 + 35i

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Alexxandr [17]

Answer: A − 9/7

Step-by-step explanation:

Hi, to answer this question we have to convert all the numbers into decimal form.

-3 1/3 = - (3x3+1)/3 =-10/3 = - 3.3334

-4/5 = -0.8

Since he number must greater than −3 1/3 but less than − 4/5.

−3 1/3 < x < − 4/5.

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The correct option is A = -9/7 , because in decimal form is equal to -1.28-

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3 years ago
What is 97,079 rounded to the nearest ten thousand
Kazeer [188]

Answer:

97000

Step-by-step explanation:

look the the left of the column asked for. if it's 0-4 it stays the same but if it's 5-9 it goes up on. e.g if the number was 97508 it would go to 98000

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2 years ago
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Please help I really don’t know what to do
just olya [345]

Answer:

The answer is 0

Step-by-step explanation:

2 * 2 * 2 = 8

8 * 0.5 = 4

4 - 4 = 0

0 / 2 = 0

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Hope this helps :)

7 0
3 years ago
2. Which equation is equivalent to 2 + 4x = 5 - 3(x + 1)? A. 2 + 4x = 2x - 3 B. 2 + 4% = 5 - 3 -3. C. 6x = 5-(+ 1). D. 2 + 4 = 2
Andre45 [30]

Answer:

B) 2 + 4x = 5 - 3 - 3x

Step-by-step explanation:

By simplifying JUST the right side and re-arranging them

2 + 4x = 5 - 3(x + 1),

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3 years ago
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