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ser-zykov [4K]
3 years ago
6

The quotient of twice a number t and 12

Mathematics
1 answer:
Arisa [49]3 years ago
5 0
(t + 12) ^ 2
(t + 12) (t + 12)
t ^ 2 + 12t + 12t + 144 144 24
t ^ 2 + 24t + 144 -------|--------
(t + 12) (t + 12) = 0 12,12 | 24

t = -12
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the diameter of a pearl is about 4×10-¹⁴ cm and the diameter of an atom is about 10-¹¹ m. how much larger than an atom is a pear
serious [3.7K]

Answer:

The diameter of an atom is 25000  times the diameter of a pearl.

Step-by-step explanation:

Given that,

The diameter of a pearl is 4\times 10^{-14}\ cm

The diameter of an atom is 10^{-11}\ m=10^{-9}\ m

Taking the ratio,

\dfrac{\text{diameter of an atom}}{\text{diameter of a pearl}}=\dfrac{10^{-9}\ m}{4\times 10^{-14}\ m}\\\\=25000

So, the diameter of an atom is 25000  times the diameter of a pearl.

5 0
2 years ago
2x=2y-6 & y= -x-1 determine amount of solutions
jek_recluse [69]

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4 0
3 years ago
CD is the segment bisector of AB at D. If AD = 4x-1 and DB = 9x-21. what is the length of AD and AB
Artemon [7]

Answer:

AD= 15

AB=30

Step-by-step explanation:

We are given that the Point D bisect the line segment AB

Hence AD = DB

AD= 4x-1

BD=9x-21

Hence

4x-1=9x-21

adding 21 on both sides and subtracting 4x from both sides

4x-4x-1+21=9x-4x-21+21

-1+21=5x

5x=20

dividing both sides by x we get

x=4

Hence

AD = 4x-1

= 4(4)-1= 16-1=15

AD= 15

AB = 2 x AD

     = 2 x 15

  = 30

3 0
3 years ago
Find the value of x and PQ in the image below don’t get to comment what goes in the blank boxes
jonny [76]

Answer is:

3

Step by step explanation:

2x-1=x+2

or, 2x-x=2+1

or, x=3

PQ = x+2

= 3+2

= 5

Answered by GAUTHMATH

8 0
3 years ago
Answer please due today
mezya [45]

Answer:

CD=9

Step-by-step explanation:

ΔABD=>

AD²=AB² + BD²                  [Pythagorean Theorem]

BD²=   AD²-AB²

BD²=9²-3²

BD²=72

BD=√72=6√2....(1)

ΔBCD=>

CD²=BD²+BC²

CD²=(6√2)² + 3²

CD²=72+9

CD²=81

CD=√81

CD=9

5 0
3 years ago
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