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Cloud [144]
3 years ago
7

Solve x2 - x - 5/2 = 0 using the quadratic formula.

Mathematics
1 answer:
stich3 [128]3 years ago
6 0

Answer:

x= 1±\sqrt{11} over 2

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The surface area of this regular pyramid is 1040 cm2. The base is a regular pentagon with side b = 16 cm and slant height l =15
Valentin [98]

Answer:

(a) = 11 cm

Step-by-step explanation:

The formula for finding the surface area of a regular pyramid is B + (1/2*P*l), with B being the area of the base, p being the perimeter of the base, and l being the slant of the pyramid.

The area of a pentagon can be solved using the formula 1/2*a*p, with a being the apothem and p being the perimeter of the pentagon.

  1. B + (1/2*80*15) = 1040
  2. B + 600 = 1040
  3. 1040 - 600 = 440 (440 is the area of pentagon)
  4. 1/2*a*(16*5) = 440
  5. 40*a = 440
  6. 440/40 = 11

The apothem is 11 cm. Hope this helps!

6 0
2 years ago
Are all squares simular true or false
enyata [817]
ANSWER:
true


STEP-BY-STEP EXPLANATION:
5 0
3 years ago
Suppose you deposit $1,200 into a bank account. The account earns yearly simple interest at a rate of 1 3/4%. How many years wil
igor_vitrenko [27]

Answer:

6 years

Step-by-step explanation:

1.75% of 1,200 = 21

so 1 year= 21

21+21= 42         2 years

42+21=63           3 years

63+21=84            4 years

81+21=105             5 years

105+21=126            6 years

Or you can do

21x6=126 so it has to equal 6 years

4 0
2 years ago
What is 5/9 as a decimal and percent?
ale4655 [162]
The answer is 0.555556 I really hope this helps!                      
3 0
3 years ago
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Nicole is 1.42 meters tall. she is 0.5 meters taller than her sister. how tall is her sister?
Sonbull [250]
The answer is that the sister is 0.95 meters tall. 
7 0
3 years ago
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