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fiasKO [112]
2 years ago
14

Lyla and Gio are packing boxes for a food drive. Lyla packs 20.5 boxes per hour. After 2 hours, Gio has packed 10.3 more boxes t

han Lyla, but wants to know how many total he has packed in 2 hours. His work is shown below.
Mathematics
1 answer:
Ira Lisetskai [31]2 years ago
7 0

Answer:

51.3 BOXES  


BECAUSE you do 20.5 times 2 to get lyla boxes then you do plus 10.3 because gio fot more than that and 51.3 is the number of boxes he packed since you add 41 which was lyla and then add 10.3 which is gio

Step-by-step explanation:


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In rectangle QRST, QS = x2 + 6x, and RT = 8x + 3. Find the length of QS.
valentina_108 [34]

The length of QS is 27 units.

<u>Step-by-step explanation:</u>

In the given rectangle QRST QS and RT are the diagonals. In a triangle, the opposite sides are equal and parallel. This implies that the diagonals of a rectangle are equal.

QS=RT \ QS=x^2+6x

RT=8x+3

x^2+6x=8x+3

x^2+6x-8x-3=0

x^2-2x-3=0

We have obtained a quadratic equation here and solving this gives the possible values of QS.This can be solved using quadratic formula

x=(-b\pm \sqrt{(b^2-4ac))}/2a

The quadratic equation is of the form ax^2+bxl+c=0  

here a=1 b=-2 c=-3  

x=(-b\pm \sqrt{(b^2-4ac))}/2a

x=x=(2 \pm \sqrt{ (-2^2-4 \times 1 \times -3))}/(2 \times 1)

x=(2 \pm \sqrt{(4+12))} /2 or  

x=(2 \pm \sqrt{16)}/2 =(2\pm 4)/2 \ \ \ \ x=(2+4)/2=3 \ \ \ \ or  \ \ \ x=(2-4)/2=-1

putting x=3 QS=x^2+6x

=3^2+6 \times 3=9+18=27

putting x=-1

QS=(-1)^2+6 \times -1=1-6=-5

Since a length can have only positive values QS=27 units.

5 0
3 years ago
Question is on picture attached
Travka [436]
  • nasa picure po yung sagot
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8 0
2 years ago
the sum of 2 numbers is 56.twice the smaller number exceeds one-half the larger number by 22.find the numbers
Alexxandr [17]

Answer:

the numbers are 18 and 38

Step-by-step explanation:

x =smaller integer and y =larger integer

6 0
2 years ago
Read 2 more answers
12 bars of soap for $8.69
Deffense [45]
Wow… how is this a question? .-.
8 0
3 years ago
9. Evaluate (-7) -10 ÷ (-28)-10<br> pls solve fast
Juli2301 [7.4K]

Answer:

17/38 or ≈ 0.45

Step-by-step explanation:

(-7) -10 / (-28)-10

= -17 / -38

= 17/38

You can keep the answer in fraction as 17/38 or ≈ 0.45

Hope this help you :3

7 0
3 years ago
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