Answer:
I think it is 24 but I don't know the rest sorry 乁( •_• )ㄏ
The polynomial to be added to –7mn + 2m² + 3n² to obtain 5m² + 2mn - 9n² is: 3m² - 11n² + 9mn.
<h3>Addition of Polynomials</h3>
Like terms should be combined together when adding polynomials.
Let x represent the polynomial expression that would be added to –7mn + 2m² + 3n² to obtain 5m² + 2mn - 9n².
Therefore:
–7mn + 2m² + 3n² + x = 5m² + 2mn - 9n².
x = 5m² + 2mn - 9n² - (-7mn + 2m² + 3n²)
x = 5m² + 2mn - 9n² + 7mn - 2m² - 3n²
Combine like terms together.
x = 3m² - 11n² + 9mn
Therefore, the polynomial to be added to –7mn + 2m² + 3n² to obtain 5m² + 2mn - 9n² is: 3m² - 11n² + 9mn.
Learn more about polynomial on:
brainly.com/question/24662212
Answer:
Step-by-step explanation:
(15 3/4) / (2 1/4) =
(63/4) / (9/4) =
63/4 * 4/9 =
63/9 =
7 miles per hr <===
Answer:
<em>Answer is </em><em>f</em><em>(</em><em>4</em><em>)</em><em>=</em><em>38</em>
Step-by-step explanation:
Therefore f(4)=38
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