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Ksenya-84 [330]
3 years ago
13

3x(x+5y)+2y(7x-y)+4(x^2+2y)

Mathematics
1 answer:
Helga [31]3 years ago
6 0

Answer:

7x^2 + 29xy -2y^2 + 8y

Step-by-step explanation:

3x(x+5y)+2y(7x-y)+4(x^2+2y)

Break all the brackets and you would hot:

= 3x*x + 3x*5y + 2y*7x - 2y*y + 4*x^2 + 4*2y

= 3x^2 + 15xy + 14xy -2y^2 + 4x^2 + 8y

= 3x^2 + 4x^2 +15xy + 14xy - 2y^2 + 8y

= 7x^2 + 29xy -2y^2 + 8y

Hope this help you :3

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How do you write the number for 3,152,308
Sergeu [11.5K]

If you mean in word form, then it should be as follows;

Three million one hundred and fifty-two thousand three hundred and eight.

If you don't mean word form, you will have to be a little more specific.

8 0
3 years ago
For f(x) = -3x - 5, find f(-11). Explain what f(11) really means for the problem ?? Need this in like the next 4 hours please!!!
Verdich [7]

Answer:

for -11, 28. for 11, -38

Step-by-step explanation:

Typos in your question. can't tell if you need -11 or pos 11

-3(-11)-5 = 33-5= 28

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7 0
3 years ago
Which equations have no real solution but have two complex solutions?
konstantin123 [22]

Answer:

B² - 4AC < 0

Step-by-step explanation:

Check for:

B² - 4AC

The equations for which

B² - 4AC < 0

have complex roots

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5 0
3 years ago
Me again please help!
Maurinko [17]

Answer:

the answer is true

false

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6 0
3 years ago
Read 2 more answers
A parking lot has 63 empty space. If the ratio of empty space to taken spaces is 7:4, how many spaces are there total
sweet [91]

First, find how many actual empty spaces there are to the ratio of empty spaces. (In other words, divide 63 by 7)

63 ÷ 7 = 9

Now that we know for that there are 9 sets of 7 in 63, multiply 4 by 9 to find the amount of taken parking spaces.

4 × 9 = 36

The unsimplified ratio of empty spaces to take spaces is 63:36. Add these two numbers together to find the total number of spaces.

63 + 36 = 99

<h2>Answer:</h2>

<u>There are </u><u>99 </u><u>total parking spaces.</u>

I hope this helps :)

5 0
3 years ago
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