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Nezavi [6.7K]
2 years ago
15

What two numbers multiply to get neg 240 and what two same numbers add to get neg 8

Mathematics
1 answer:
ahrayia [7]2 years ago
5 0
Make the number x & y
x*y=-240240
x+y=-8 < you can rearrange this as x=-8-y
Now substitute in this rearrangement
(-8-y)*y=-240
-8y-y² =-240 (add y² and 8y)
0=y²+8y-240 (now factorise the equation)
0=(y+20)(y-12) (for 2 things to multiply and equal zero one or both has to equal zero)
so y+20=0 and/or y-12=0
so y=-20 or y=12
Now substitute these into x+y=-8 to get x
y=-20 then x=12
y=12 then x=-20

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-Dominant- [34]

Answer:

1/15   gal / mile   if your numbers are correct

Step-by-step explanation:

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7 0
2 years ago
Simplify the Expression<br> - 1/2 (8b+3)+3b=
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Answer:

-b -3/2

Step-by-step explanation:

-1/2(8b+3) + 3B (a negative times a positive equals a negative)

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(-1/2 x 8b -1/2 x 3) + 3b

-4b - 3/2 + 3b

2.  Add -4b + 3b = -b

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2 years ago
jenny wrapped 30 gifts,jenny wrapped 5 times as many gifts as hong let n be the number of gifts that hong wrapped
Whitepunk [10]

n = 6

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hope this helped, please mark brainliest. :)

7 0
3 years ago
Read 2 more answers
Mr wells drew a plan for a rectangle dog run three of the vertices are (2 1/3, 7 1/2), (12, 7 1/2), and (12, 1) what are the coo
melisa1 [442]

Answer:

Step-by-step explanation:

let 4th fourth vertex be D (x,y)

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or A(7/3,15/2),B(12,15/2),C(12,1)

Mid-point of diagonal AC is  P((7/3+12)/2,(15/2+1))

Mid -point of diagonal BD is P((12+x)/2,(15/2+y)/2)

(Because mid -point of diagonal is same.)

(12+x)/2=(7/3+12)/2

12+x=7/3+12

x=7/3

(15/2+1)/2=(15/2+y)/2

15/2+1=15/2+y

y=1

so fourth vertex is (7/3,1)

8 0
3 years ago
What is the missing term in this arithmetic sequence? 9, 14, 19, __, 29, 34, …
Brilliant_brown [7]
The common difference is a₂-a₁=14-9=5.
The fourth term is the third term plus the common difference -> 19+5=24.
The answer is B.
5 0
3 years ago
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