3 years ago

What is the factored form of a2 – 121?

Mathematics

1 answer:

Elina [12.6K]3 years ago

5 0

A^2 -121 = a^2 -11^2 = (a-11)(a+11)

so the second choice is right sure

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What is the exponential function modeled by the following table?

Ierofanga [76]

$\bf \begin{array}{ccll}
x&f(x)\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
2&\stackrel{3^2+1}{10}\\
3&\stackrel{3^3+1}{28}\\
4&\stackrel{3^4+1}{82}
\end{array}\implies f(x)=3^x+1$

8 0

3 years ago

Mark is 15 years younger than Ashley. The sum of their ages is 55. Write a system of 2 equations to determine Mark (M) age and A

skelet666 [1.2K]

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3 years ago

Which of these numbers is a rational number?

Ymorist [56]

Answer:

the answer is A and C

Step-by-step explanation:

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2 years ago

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ehidna [41]

Answer: See attached table

Step-by-step explanation:

$\begin{table}[]\begin{tabular}{lllll} & & & & \\ & & & & \\ & & & & \\ & & & & \end{tabular}\end{table}$ +---+---+---+

| 1 | 8 | 2 |

+---+---+---+

| 6 | 4 | 2 |

+---+---+---+

| 5 | 0 | 7 |

+---+---+---+

<u>Proofs:</u>
First row: 1+6+5 = 12

Second row: 8+4+0 = 12

Third row: 2+2+7 = 12

First column: 1+8+2 = 12

Second column: 6+4+2 = 12

Third column: 5+0+7 = 12

Diagonal starting from top left to bottom right: 1+4+7 = 12

Diagonal staring from top right to bottom left: 2+4+5 = 12

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2 years ago

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Ket [755]

Answer is -6(see photo for step by step):

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3 years ago