3 years ago

A student earned 50% on a 100 question quiz. How many questions did

Mathematics

2 answers:

Rom4ik [11]3 years ago

8 0

Answer:

Step-by-step explanation:

it is 50 because he got 50%

aleksandr82 [10.1K]3 years ago

7 0

Answer:

Step-by-step explanation:

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Please help i will mark brainliest

Zielflug [23.3K]

Answer:

$\left[\begin{array}{ccc} -10 & -9 \\ -8 & -2 \\ -11 & 67 \end{array}\right]$

Step-by-step explanation:

This is a matrices. Since they are both the same in format, we can add them together. But first we must multiply each value by the given values.

$\left[\begin{array}{ccc}-30 & -5 \\ 20 & 30 \\ -35 & 35 \end{array}\right]$ + $\left[\begin{array}{ccc} 20 & -4 \\ -12 & -32 \\ 24 & 32 \end{array}\right]$ = $\left[\begin{array}{ccc} -10 & -9 \\ -8 & -2 \\ -11 & 67 \end{array}\right]$

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