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3 years ago

If tim was 5 in 1990 and its 2020 how old is tim

Mathematics

2 answers:

avanturin [10]3 years ago

5 0

Answer:

he's 35

Step-by-step explanation:

2020 - 1990 + 5 = 35

8_murik_8 [283]3 years ago

3 0

Answer:

Tim will be 36.

Step-by-step explanation:

1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020.

If you count them all, you'll see that 31 years are between 1990 and 2020. 31+5=36. Therefor, tim is 36.

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3 years ago

Help mi out plz..... solve using matrix method

HACTEHA [7]

Answer:

x = $\frac{22}{7}$

y = $\frac{3}7}$

Step-by-step explanation:

$2x-3y=5\\5x=4y=14\\\\\left[\begin{array}{cc}2&-3\\5&-4\\\end{array}\right] \left[\begin{array}{c}x\\y\\\end{array}\right] =\left[\begin{array}{c}5\\14\\\end{array}\right]$

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The inverse of A multiplied by A = the identity matrix $\left[\begin{array}{cc}1&0\\0&1\\\end{array}\right]$

Inverse of A = $\frac{1}{detA}$ $\left[\begin{array}{ccc}-4&3\\-5&2\\\end{array}\right]$

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Inverse of A = $\left[\begin{array}{cc}\frac{-4}{7} &\frac{3}{7} \\\frac{-5}{7} &\frac{2}{7}\\\end{array}\right]$

$\left[\begin{array}{ccc}x\\y\\\end{array}\right] = \left[\begin{array}{cc}\frac{-4}{7} &\frac{3}{7} \\\frac{-5}{7} &\frac{2}{7}\\\end{array}\right] \left[\begin{array}{ccc}5\\14\\\end{array}\right] = \left[\begin{array}{ccc}\frac{22}{7} \\\frac{3}{7} \\\end{array}\right]$

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3 years ago

I need help with this

LiRa [457]

Answer:

Since

and

have the same denominator, add them by adding their numerators.

Step-by-step explanation:

7 0

2 years ago

Mr. Green needs to give each student in his class $0.75 for bus fare for a field trip, but he's not sure if he has enough quarte

EleoNora [17]

Answer: He has enough quarters to give 18 students bus fare.

Step-by-step explanation:

1 quarter = 0.25

3 quarters = 0.75

0.75 * x = 13.75

/0.75

x = 18.33

18 * 0.75 = 13.50

5 0

3 years ago