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Colt1911 [192]
3 years ago
10

The roots of f(x) = 2x^2 + 8x + 13 are and The vertex of the parabola is at

Mathematics
1 answer:
Nonamiya [84]3 years ago
4 0

Answer:

( 2 , − 5 )

Step-by-step explanation:

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Please help! I need answers for both questions it’s very confusing!
Lilit [14]

Answer:

for number 5 its:

-15 -8 8/9 -3.3

and for number 6 its:

-3.3 -8 8/9 and -15

also sorry if its wrong

5 0
3 years ago
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You write the letters of the word DEMOGRAPHICS on separate slips of paper and place them in a bowl. Your friend will draw a slip
Lesechka [4]

Answer:

1/3

Step-by-step explanation:

we have 12 letters

e a i o

4 vowels

so 4/12=1/3

8 0
4 years ago
Sequences:
IrinaK [193]

Answer:

A.

  • aₙ = (2n + 3)/4

<u>The first 5 terms:</u>

  • a₁ = (2*1 + 3) / 4 = 5/4
  • a₂ = (2*2 + 3) / 4 = 7/4
  • a₃ = (2*3 + 3)/ 4 = 9/4
  • a₄ = (2*4 + 3) / 4 = 11/4
  • a₅ = (2*5 + 3) / 4 = 13/4

B.

  • aₙ = (n - 3)/(n - 2)

<u>The first 5 terms:</u>

  • a₁ = (1 - 3) / (1 - 2) = 2
  • a₂ = (2 - 3) / (2 - 2) = undefined
  • a₃ = (3 - 3)/ (3 - 2) = 0
  • a₄ = (4 - 3) / (4 - 2) = 1 / 2
  • a₅ = (5 - 3) / (5 - 2) = 2 / 3
7 0
3 years ago
Find m P. Quadrilateral
Mashutka [201]

Answer:

m∠P = 107º

Step-by-step explanation:

Since two sides are parallel this is a trapezoid

In a trapezoid, the angles on the same leg (called adjacent angles) are supplementary, meaning they add up to 180 degrees.

(7x + 31) + (21x - 19) = 180

combine like terms

28x + 12 = 180

Subtract 12 from both sides

28x = 168

Divide both sidees by 28

x = 6

m∠P = 21x - 19

m∠P = 21(6) - 19

m∠P = 107º

8 0
3 years ago
A pack of 9 toilet rolls cost £4.23
chubhunter [2.5K]
For this question you should first find a pack of one toilet roll for each cost so you can say : 
if 9 toilet rolls cost 4.23 so 1 toilet roll is : 4.23/9 = 0.47 
and if 4 toilet rolls cost 1.96 so 1 toilet roll is : 1.96 /4 = 0.49 
so 0.49 is greater than 0.47 so a pack of 9 toilet rolls gives the better value for money :)))
i hope this is helpful 
have a nice day 
3 0
4 years ago
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