Austin(me) had 21 girl friends. He lost 10 in a cat fight. How many girls does he have left?

Answers

Answer 1

Answer: 21 - 10 = 11

I hope I helped please leave thanks

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6. Jessie sorted the coins in her bank. Shemade 7 stacks of 6 dimes and 8 stacksof 5 nickels. She then found 1 dime and1 nickel. How many dimes and nickelsdoes Jessie have in all? (Lesson 2.12)
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Mark rode his bike to school at anaverage speed of 12 miles per hour.What was his speed in feet perminute (fpm)?

Answers

0.2 fpm

Good luck! XD

Solve each system of linear equations by substitution.3x - 2y = 9
y = 2x - 7 Pease show all steps

Answers

$3x-2(2x-7)=9 \n 3x-4x+14=9 \n -x+14=9 \n -14\ \ \ \ -14 \n -x=-5 \n /-1/-1 \n \ \ x=5$

3x-2y=9 will be
3x-9=2y and
(3x)/2-9/2=y

2) y=2x-7

if you mean the intersection , so y=y
(3x)/2-9/2=2x-7
1,5x-4,5=2x-7
-4,5+7=2x-1,5x
2,5=0,5x
x=2,5/0,5
x=5 is the answer

Solve linear system using substitution

y=6-2x
7x-y=3

Answers

$\left \{ {{y=6-2x} \atop {7x-y=3}} \right. \n\nsubstitute\ first\ equation\ into\ the\ second\n\n7x-(6-2x)=3\n\n7x-6+2x=3\n\n9x-6=3\ \ \ | add\ 6\n\n9x=9\ \ \ | divide\ by\ 9\n\nx=1\n\ny=6-2*1=6-2=4$

How can I find two numbers whose sum is 38 and whose difference is 14

Answers

assume 1st num is x
and 2nd num is y
you want x+y = 38
and x-y = 14
by solving those two equations we get x = 26 & y= 12
so , the numbers is 12 & 26

How do I do these questions?

Answers

I just did the first one but I don't know is it correct

A motorist is driving across the country at a steady speed at 54.5 miles per hour. In the 17th hour, the odometer on her car reads 62,416. What was the odometer reading when she first started her trip?

Answers

54.5*17=926.5

62416-926.5=61489.5

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