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3 years ago

9

Coins were developed as a medium of exchange because other items like cows, grain, and land were more difficult to move from pla

ce to place;
true
false

2 answers:

Illusion [34]3 years ago

7 0

The correct answer is False

CaHeK987 [17]3 years ago

4 0

i would say false

thisis because well im not sure someone just told me this

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David is starting a collection of baseball cards. He currently has 16 cards in his collection. He hopes to buy 5 more each month

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Answer:

16x+5=50

Step-by-step explanation:

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3 years ago

HELP! WILL MARK BRAINLIEST IF CORRECT!

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3 years ago

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Will Mark Brainlest helpppp

Anvisha [2.4K]

Answer:

R = $\left[\begin{array}{ccc}-3&-2\\1&-3\\\end{array}\right]$

Step-by-step explanation:

P - Q + R = I ( I is the identity matrix )

$\left[\begin{array}{ccc}2&4\\3&5\\\end{array}\right]$ - $\left[\begin{array}{ccc}-2&2\\4&1\\\end{array}\right]$ + R = $\left[\begin{array}{ccc}1&0\\0&1\\\end{array}\right]$ ( subtract corresponding elements )

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$\left[\begin{array}{ccc}4&2\\-1&4\\\end{array}\right]$ + R = $\left[\begin{array}{ccc}1&0\\0&1\\\end{array}\right]$

R = $\left[\begin{array}{ccc}1&0\\0&1\\\end{array}\right]$ - $\left[\begin{array}{ccc}4&2\\-1&4\\\end{array}\right]$ = $\left[\begin{array}{ccc}-3&-2\\1&-3\\\end{array}\right]$

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3 years ago

State if each pair of ratios forms a proportion 4/3 and 8/6 yes or no??

Reptile [31]

We have: $\frac{4}{3}=\frac{4.2}{3.2}= \frac{8}{6}$

Answer: Yes

Ok done. Thank to me :>

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3 years ago

Help me quick me please

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3 years ago