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4 years ago

Solve 5(r—1)=2(r-4)-6 step by step

Mathematics

1 answer:

frozen [14]4 years ago

6 0

Answer:

r = -3

Step-by-step explanation:

Performing the indicated multiplication on both sides of this equation, we get:

5r - 5 = 2r - 8 - 6

Combining the r terms: 3r - 5 = - 8 - 6.

Combining the constants: 3r = 5 - 14, or 3r = -9.

Dividing both sides by 3, to isolate r, we get: r = -3

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3 years ago

AABC is a right triangle. If AC = 15 and BC = 17, find AB.

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4 0

4 years ago

NEED ANSWER ASAP!!!!

lesya692 [45]

Answer:

1st option

Step-by-step explanation:

To find the difference of the given matrices, we just need to subtract the corresponding elements of the two matrices as shown below:

$\left[\begin{array}{cc}-4&8\\3&12\end{array}\right] -\left[\begin{array}{cc}2&1\\-14&15\end{array}\right] \\\\ \\ =\left[\begin{array}{cc}-4-2&8-1\\3-(-14)&12-15\end{array}\right]\\\\ \\ =\left[\begin{array}{cc}-6&7\\17&-3\end{array}\right]$

Thus, 1st option gives the correct answer

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4 years ago

Read 2 more answers