PLEASE HELP ITS DUE AT 12

Mathematics

2 answers:

sesenic [268]4 years ago

4 0

Answer:39

Step-by-step explanation:

DivIde 156 by 4. That is the smaller board length.

11111nata11111 [884]4 years ago

4 0

Answer:

The shorter piece is 52 inches

Step-by-step explanation:

Since we don't know what the shorter length is for now we will just call it x. So x+ the second piece is equal to 156 inches. The second piece is two times larger than the smaller piece (x) which means the larger piece has to be equal to 2x. Using this we can set up an equation x+2x=156 inches. x+2x is equal to 3x, so in order to get x by itself we need to divide both sides by 3 so x is equal to 52.

x+2x=156

3x=156

3x÷3= 156÷3

x=52

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Jesse and Peyton were on scooters jesse traveled 15 in 6 seconds peyton travels 22 meters in 10 seconds who was moving faster? e

DiKsa [7]

9514 1404 393

Answer:

Jesse

Step-by-step explanation:

Jesse's distance in 60 seconds would be ...

(60 s)(15 m)/(6 s) = 150 m

Peyton's distance in 60 seconds would be ...

(60 s)(22 m)/(10 s) = 132 m

Jesse travels farther in the same amount of time, so Jesse is moving faster.

You might find it simpler just to compute the rate of each.

Jesse: (15 m)/(6 s) = 2.5 m/s

Peyton: (22 m)/(10 s) = 2.2 m/s

Jesse's speed is higher.

4 0

3 years ago

3x + y = 19 , and x + 3y = 1.<br> Find the value of 2x + 2y<br> Can anyone explain this one for me?

velikii [3]

$First\ solve\ system\ of\ equations\ to\ find\ values\ of\ x\ and\ y\\\\ \left \{ {{3x+y=19\ \ |*(-3)} \atop {x+3y=1\ \ \ \ \ \ \ \ \ }} \right.\\\\ \left \{ {{-9x-3y=-57} \atop {x+3y=1 }} \right.\\+------\\Addition\ method\\\\
-8x=-56\ \ |:(-8)\\\\x=7\\\\y=19-3x=19-3*7=19-21=-2\\\\
2x+2y=2*7+2*(-2)=14-4=10\\\\Answer\ is\ 10.$