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enyata [817]
3 years ago
7

a 20 ft piece of string is cut into two pieces so that the longer piece is 5 feet longer than twice the shorter piece. If the sh

orter piece is x feet long, find the lengths of both pieces
Mathematics
1 answer:
oee [108]3 years ago
5 0
Longer piece is 15 and shorter piece is 5
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Help me with both questions <br>plz read carefully so you can help me
Scrat [10]

Answer:

2. Both

3. e = 3, f = -5, g = 2

Step-by-step explanation:

2. Order doesn't affect product

3. You get e • f = -15, e • g = 6, f • g = -10 from the problem.

   e = -15/f    (solve for e)

   (-15/f) • g = 6    (plug into second equation)

   (-15g/f) = 6    (multiply)

   -15g = 6f    (multiply)

   (-5g/2) = f    (divide)

   (-5g/2) • g = -10    (plug into last equation)

   (-5g^2)/2 = -10    (multiply)

   -5g^2 = -20    (mulitply)

   g^2 = 4    (divide)

   g = 2    (square root)

   e • g = 6    (plug in for g, solve for e)

   e • 2 = 6

   e = 3

   f • g = -10    (plug in for g, solve for f)

   f • 2 = -10

   f = -5

I don't know if your teacher made a typo because I tried this multiple times and got the same answer. I don't know how e is negative.

8 0
2 years ago
Read 2 more answers
Sanjay graphs a quadratic function that has x-intercepts of –3 and 7. Which functions could he have graphed? Check all that appl
dem82 [27]
1,3,and 4 because for 1 and 3 if you factor it out you can get (x+3)(x-7) which if you solve it it creates them to be -3 and 7. The 4 one is already factored you just solve it and it also becomes -3 and 7. The - outside the parentheses is nothing.
4 0
2 years ago
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Solve: 4n - 6 = 12<br> O n = 4<br> O n = -4<br> O n = 4.5<br> O n=-4.5
Alexus [3.1K]

Answer:

4.5

Step-by-step explanation:

4n - 6 = 12

add +6 to both sides

4n = 18

divide by 4

4/4n = 18/4

n = 4.5

7 0
3 years ago
What is the difference between linear pair supplementary angle and straight angle?
Ivenika [448]
They both are 180 degrees.

One possible difference is that a straight angle is just a single angle measuring 180 degrees, while a linear pair supplementary angle are pairs of adjacent angles that add up to 180 degrees.
3 0
3 years ago
Harry collects data from a random sample of seventh-graders. Out of 25 respondents, 10 ride the bus home. Of the 150 seventh-gra
alekssr [168]

10/25=x/150

x=60

so 60 students

WELCOME MOA!!!

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3 years ago
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