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tigry1 [53]
3 years ago
9

Please help me, I don't understand.

Mathematics
1 answer:
levacccp [35]3 years ago
3 0
The answer is a I’m pretty sure
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cellus If investments double every 7 years and you start with a $600 investment, how much money would you have after 21 years? ​
Keith_Richards [23]

Answer:

4800$

Step-by-step explanation:

1 day = 600

7 years = 600 x 2 = 1200$

14 years = 1200 x 2 = 2400$

21 years = 2400 x 2 = 4800$

6 0
2 years ago
Let Upper A equals left bracket Start 2 By 2 Matrix 1st Row 1st Column negative 2 2nd Column 4 2nd Row 1st Column 1 2nd Column 3
Anastaziya [24]

Answer:

See explanation

Step-by-step explanation:

Given:

A=\left[\begin{array}{cc}-2&4\\1&3\end{array}\right]

B=\left[\begin{array}{cc}-2&1\\3&7\end{array}\right]

A. Find AB:

AB=\left[\begin{array}{cc}-2&4\\1&3\end{array}\right]\cdot \left[\begin{array}{cc}-2&1\\3&7\end{array}\right]=\left[\begin{array}{cc}-2\cdot (-2)+4\cdot 3&-2\cdot 1+4\cdot 7\\1\cdot (-2)+3\cdot 3&1\cdot 1+3\cdot 7\end{array}\right]=\left[\begin{array}{cc}16&26\\7&22\end{array}\right]

B. Find BA:

BA=\left[\begin{array}{cc}-2&1\\3&7\end{array}\right]\cdot \left[\begin{array}{cc}-2&4\\1&3\end{array}\right]=\left[\begin{array}{cc}-2\cdot (-2)+1\cdot 1&-2\cdot 4+1\cdot 3\\3\cdot (-2)+7\cdot 1&3\cdot 4+7\cdot 3\end{array}\right]=\left[\begin{array}{cc}5&-5\\1&33\end{array}\right]

C. Answers are not the same

D. Matrices multiplication is not commutastive in general, so

AB\neq BA

7 0
3 years ago
Look at this graph:
Tanzania [10]

Answer:

The slope is 2.

Step-by-step explanation:

The formula for slope is m = (y2-y1)/(x2-x1)

If we choose the points (0,2) and (1,4) we can plug these into our slope equation.

(4 - 2) / (1 - 0) = 2/1 = 2

5 0
3 years ago
Read 2 more answers
Helena has saved $595 to put toward snowboarding equipment and lift tickets at the hill. Each lift ticket costs $35. If she want
Akimi4 [234]
595 - 35t > 420
-35t > 420 - 595
-35t > -175
t < 5........so she can buy 4 tickets
5 0
3 years ago
What Is the answer? <br><img src="https://tex.z-dn.net/?f=6x%20%2B%202%20%2B%206x%20%3C%2014" id="TexFormula1" title="6x + 2 + 6
timofeeve [1]

6x+2+6x<14

add 6x+6x

12x+2<14

subtract 2 from both sides

12x<12

divide by 12

x<1

5 0
3 years ago
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