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maxonik [38]
2 years ago
14

Help me with this, please.

Mathematics
1 answer:
Ira Lisetskai [31]2 years ago
3 0

Answer:

  • - 5 ± 11

Step-by-step explanation:

2x² + 5x - 12 = 0

  • a = 2,  b = 5, c = -12
  • x = (-b ± D)/2a
  • D = √b² - 4ac = √5² -4*2*(-12) = √25+96 = √121 = 11
  • x = (-5 ± 11)/4

Correct choice is the second one or B

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If DM=35, what is the value of r ?
balu736 [363]

Answer:

r=12.5 units

Step-by-step explanation:

Well assuming that DM means diameter of a circle, then r should be the radius of the circle.

Diameter of a circle is twice the radius of the circle, hence with the value of Diameter, you should half it to get the value of radius.

Given  diameter =25

Radius will be= 25/2 = 12.5 units

7 0
2 years ago
Hey everyone hru and i hope u all are doing good
Elan Coil [88]

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How to find the surface area and volume of a rectangular prism?
shepuryov [24]

Answer:

A=2 (Wl+hl+hw)

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3 years ago
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Two consecutive even intergers whose sum is 110
Harrizon [31]
Consecutive even integers are 2 apart
they are
x and x+2


sum is 110
x+x+2=110
2x+2=110
minsu 2 both sides
2x=108
divide both sidedse by 2
x=54
x+2=56
the numbers are 54 and 56
7 0
3 years ago
How would I do this problem?
kenny6666 [7]

If it's a geometric sequence then:

a_1=27;\ a_2=27\\\\r=\dfrac{a_2}{a_1}\to r=\dfrac{27}{36}=\dfrac{3}{4}=0.75\\\\a_{n+1}=a_nr\\\\a_3=27\cdot0.75=20.25\ CORRECT

We calculate the fourth and fifth term of the sequence:

a_4=a_3r\to a_4=20.25\cdot0.75=15.1875\\\\a_5=a_4r\to a_5=15.1875\cdot0.75=11.390625

Answer:

In year 4 15.1875 animals.

In year 5 11.390625 animals.

7 0
3 years ago
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