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blagie [28]
2 years ago
5

If one side of a square notebook measures 20 cm, what is the area of the front cover of the notebook?

Mathematics
1 answer:
nexus9112 [7]2 years ago
8 0

Answer:

400cm

Step-by-step explanation:

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Solve x square − 10 x + 35 by completing the square.
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Step-by-step explanation:

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2 years ago
An object is thrown upward at a speed of 124 feet per second by a machine from a height of 19 feet off the ground. The height h
klasskru [66]

a) For this question we set h=59 and solve for t, in order to do so we use the general formula for second-degree equations:

\begin{gathered} t=\frac{-124\pm\sqrt[]{124^2-4(-16)(-40)}}{2(-16)} \\ t=\frac{-124\pm113.21}{-32} \end{gathered}

The height of the object will be 59 feet at t=7.41 seconds and t=0.34 seconds.

b) When the object reaches the ground, h=0 therefore:

0=-16t^{2}+124t+19

Solving for t we get:

\begin{gathered} t=\frac{-124\pm\sqrt[]{124^2-4(-16)(19)}}{2(-16)} \\ t=\frac{-124\pm\sqrt[]{16592}}{-32}=\frac{-124\pm128.81}{-32} \end{gathered}

Therefore, since t cannot be negative the solution is t=7.9 seconds.

7 0
1 year ago
What is the inverse of the conditional statement “If a number is divisible by 6, then it is divisible by 3”?
Lapatulllka [165]
If a number is not divisible by 6, then it is not divisible by 3. That is your answer.
Hope this helps
6 0
3 years ago
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