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finlep [7]
3 years ago
8

What does x2+11x+18 equal

Mathematics
2 answers:
OLEGan [10]3 years ago
6 0

Answer:

x =(11-√193)/2=-1.446

x =(11+√193)/2=12.446

Step-by-step explanation:

disa [49]3 years ago
4 0

Answer:

x=-9

x=-2

Step-by-step explanation:

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The width of a rectangle is 4n-8.5 feet and the length is 8.5n+9 feet. Find the perimeter of the rectangle
Eva8 [605]

Answer: P = 25n + 35

Step-by-step explanation:

The perimeter of a rectangle is twice the sum of length and width.

P = 2(l +w)

P = 2((8.5n+9) + (4n +8.5))

P = 2(12.5n +17.5)

P = 25n + 35

7 0
3 years ago
Read 2 more answers
Slope = -8, passing through (2,5)
Marrrta [24]
Y - y₁ = m(x - x₁)
y - 5 = -8(x - 2)
y - 5 = -8(x) + 8(2)
y - 5 = -8x + 16
<u>  + 5            + 5</u>
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5 0
3 years ago
if the area of a square is 144 feet and the perimeter of the triangle is 28 feet, what is the perimeter of the room's floor?
FinnZ [79.3K]

Answer:

52+12\pi

Step-by-step explanation:

The diagram for the question is attached below

perimeter of the triangle is 28 feet

area of a square is 144 feet

Area of the square is side^2

side ^2= 144

take square root on both sides

side = 12

side of the square = 12

side is the diameter of the semicircle

Diameter = 12 , so radius = 12 divide 2 = 6

circumference of semicircle = 2\pi r=2\pi (6)=12\pi

one side of the rectangle is calculated in the perimeter of triangle and other side is calculated using circumference

perimeter of other two side = 2(12)= 24

Total perimeter = 28+24+12\pi =52+12\pi

4 0
3 years ago
If y = 8 when x<br> 8 when x = 3, find y when x = 45.
Zarrin [17]

Answer:

y = 120

Step-by-step explanation:

y = kx ur finding k

8 = k 3 get k alone by dividing both sides by 3 --> 8/3 = k

k = 8/3

Y = 8/3 45 now your finding Y when x is 45

Y = 120

to make sure do 120 = 8/3 45 should equal the same

4 0
3 years ago
78, 66, ,42,30 whats the missing number in the sequence
goldenfox [79]

Answer:

54

Step-by-step explanation:

30,42,54,66,78

counting by 12

4 0
3 years ago
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