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charle [14.2K]
3 years ago
7

50 points! Can someone help please

Mathematics
2 answers:
gladu [14]3 years ago
7 0

Answer:

Option 4 (a1 = 1, r = 3)

Step-by-step explanation:

a1 = 1

r = 3

3 = 3(1)

9 = 3(3)

27 = 3(9)

81 = 3(27)

gregori [183]3 years ago
7 0

'a1' is the first number in a sequence

'r' is the common ratio

Thus, your answer would be d.

a1 = 1 and r = 3

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Well I'm having troubles with something I have no idea what it is or how to do it. The problem is x^2 -18x+8=0. I only know how
Lubov Fominskaja [6]

Answer:

x = \frac{-(-18) -\sqrt{(-18)^2 -4*1*8}}{2} = \frac{18 -2 \sqrt{73}}{2}= 9 -\sqrt{73}

x = \frac{-(-18) +\sqrt{(-18)^2 -4*1*8}}{2} = \frac{18 +2 \sqrt{73}}{2}= 9 +\sqrt{73}

Step-by-step explanation:

We have the following equation:

x^2 -18 x +8 =0

We can use the quadratic formula given by:

x = \frac{-b \pm \sqrt{b^2 -4ac}}{2a}

Where:

a = 1 , b=-18, c =8

And replacing we got:

x = \frac{-(-18) -\sqrt{(-18)^2 -4*1*8}}{2} = \frac{18 -2 \sqrt{73}}{2}= 9 -\sqrt{73}

x = \frac{-(-18) +\sqrt{(-18)^2 -4*1*8}}{2} = \frac{18 +2 \sqrt{73}}{2}= 9 +\sqrt{73}

6 0
3 years ago
50 POINTS!!! I NEED IT NOW!!!
MAXImum [283]

Answer:

37.699 cm³

Step-by-step explanation:

Sa of cone:

pi×r×l + pi×r²

(3pi × l) + (pi × 3²) = 24pi

3l + 9 = 24

3l = 15

l = 5 (slant height)

Height: h

h² + r² = l²

h² + 3² = 5²

h² = 16

h = 4 cm

Volume = ⅓ × pi × r² × h

= ⅓ × pi × 3² × 4

= 12pi cm³

= 37.69911184 cm³

7 0
3 years ago
Please answer I will mark branliest
Over [174]

Answer:

C

Step-by-step explanation:

To find the volume of a cube, raise the value of one side to the third power. 2.5 centimeters to the third power is 15.625, which can also be expressed as the fraction 125/8

7 0
3 years ago
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I need help bad my teacher do not teach me this
Stolb23 [73]

Answer:

i will help you

Step-by-step explanation:

do you have a picture of the assignment? or can you post a picture of it?

8 0
3 years ago
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ANSWER ASAP PLZ
stira [4]
60,000,000

Hope this helps :)
5 0
3 years ago
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