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3 years ago

What number must be added to the expression below to complete the square?

Mathematics

2 answers:

kupik [55]3 years ago

8 0

Answer:

Step-by-step explanation:

zheka24 [161]3 years ago

3 0

The answer is C. You would take -18 and divide by two and get -9. Then square this to get 81. That is your answer, hope this helps!

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Bonjour, vous pouvez m'aider pour mon devoir de maths Quelle la valeur exacte de la longueur d'un cercle de rayon 7 m

strojnjashka [21]

Answer:

english?

Step-by-step explanation:

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3 years ago

Express (x+9)^2 as a trinomial in standard form.

Andreyy89

Answer:

x^2 + 18x + 81

Step-by-step explanation:

(x+9) (x+9)

then distributive property

5 0

2 years ago

Read 2 more answers

Can someone help me with this math homework please!

mamaluj [8]

Answer:

The rock hits the ground between <u>2</u> seconds and <u>2.5</u> seconds after it is dropped

Step-by-step explanation:

The given table is presented as follows;

$\begin{array}{ccl}t&h(t)&Description\\0&20&Initial \ height\\0.5&18.8&Rock \ in \ downward \ motion\\1&15.1&\\1.5&9&\\2&0.4&The \ height \ just \ before \ the \ rock \ hits \ the \ ground \\2.5&-10.6&The \ calculated \ height \ after\ the \ rock \ hits \ the \ ground \\3&-24.1&Calculated \ height \ after\ the \ rock \ hits \ the \ ground\end{array}$

Therefore, the rock hits the ground between t = 2 seconds and t = 2.5 seconds after it is dropped.

4 0

3 years ago

What is 11 out of 25 as a percentage

Angelina_Jolie [31]

Ok, I'm not giving you the answer. Instead, I'm going to give you the way to solve it. Then, you can do it yourself, message it to me, and I will check it.
Do .11 x 25. Remember to add the decimal back in.

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3 years ago

Read 2 more answers

Helpppppppp please it’s due today

yanalaym [24]

Answer:

Option B, would be the correct option as she sets it in the attic window. I hope this helps you! :)

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3 years ago