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IRISSAK [1]
2 years ago
7

Simplify 4(5x^2-9x+7)+2(-10^2+18x-13)

Mathematics
2 answers:
Fynjy0 [20]2 years ago
7 0

4(5x² - 9x + 7) + 2(-10² + 18x - 13)

  • Distribute 4 inside the parentheses.

20x² - 36x + 28 + 2(-10² + 18x - 13)

  • Find 10 to the power of two.

20x² - 3y6x + 28 + 2(-100 + 18x - 13)

  • Combine like terms inside the parentheses (-100 - 13).

20x² - 36x + 28 + 2(-113 + 18x)

  • Distribute 2 inside the parentheses.

20x² - 36x + 28 + (-226 + 36x)

  • Rewrite as - 226 and + 36x; remove the parentheses.

20x² - 36x + 28 - 226 + 36x

  • Combine like terms. The -36x and 36x cancel each other out.

20x² - 198

  • is your answer.
Jlenok [28]2 years ago
4 0
The answer is 20x^2 - 198
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In order for the function to be one-to-one, it must pass the vertical line test AND the horizontal line test.

The vertical line test is where you draw a vertical line anywhere and the line will not intersect the graph more than one time.  In other words, the function cannot contain a duplicate x-value.

The horizontal line test is where you draw a horizontal line anywhere and the line will not intersect the graph more than one time.  In other words, the function cannot contain a duplicate y-value.

The graph provided passes the vertical line test but fails the horizontal line test. <em>One example is that there are two x-intercepts.</em>

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3 years ago
Sammi has $125.75 in her savings account. She deposits $25.50 into the account each month for the next 6 months. How much is in
AnnZ [28]

Hi,

<em>Sammy has $125.75 in her savings account. She deposits $25.50 into the account each month for the next 6 months. </em>

<u>How much is in Sammy's account at the end of the 6 months?</u>

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In 6 months she deposits $153 into the account.

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At the end of the 6 months Sammy has $278.75 in her savings account.

7 0
2 years ago
What is the domain of the function y = √x + 4 ?
puteri [66]

Hello from MrBillDoesMath!

Answer:

Domain:  x >=0 for both cases


Discussion:

Assuming we are dealing with real valued functions, the domain of

y = x^(1/2) +4

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The domain of  x^(1/2) +6 -7 is the same as for the last function  and for the same reason.


Thank you,

MrB

8 0
3 years ago
Please help me please thank you
Gennadij [26K]

Answer:

Step-by-step explanation:

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