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Misha Larkins [42]

2 years ago

5

john is saving to buy a television that costs $1,250 john currently has $200 saved he plans to save an additional $50 per week h

ow many weeks will it take john to have $1,250 saved

2 answers:

KIM [24]2 years ago

8 0

In 21weeks is the answer

Alina [70]2 years ago

7 0

Answer:

21 weeks

Step-by-step explanation:

1250. - 200=1050

1050/50=21

21 weeks

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Given the matrices: 1 2 A= 1 -1 2 1 1 B= 3 4 Calculate AB: C11 C12 [2.1] х 1 2 3 4 C21 C22 C11 = C12 = -2 C22 - C215 DONE

eduard

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Step-by-step explanation:

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Calculating AB:

$\begin{pmatrix}1&-1\\ \:\:2&1\end{pmatrix}\times \:\begin{pmatrix}1&2\\ \:\:3&4\end{pmatrix}=\begin{pmatrix}c_{11}&c_{12}\\ \:\:\:c_{21}&c_{22}\end{pmatrix}$

Multiply the rows of the first matrix by the columns of the second matrix

$=\begin{pmatrix}1\cdot \:1+\left(-1\right)\cdot \:3&1\cdot \:2+\left(-1\right)\cdot \:4\\ 2\cdot \:1+1\cdot \:3&2\cdot \:2+1\cdot \:4\end{pmatrix}$

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2 years ago

Read 2 more answers