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coldgirl [10]
2 years ago
10

Please can I check with you the answer for nbr 12? Is it correct?

Mathematics
1 answer:
Crank2 years ago
8 0

Answer:

B and C

Step-by-step explanation:

  • B = 2,4,6
  • =3,6
  • C= 2,4,6,8,10,12
  • = 6,12
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Find the product of √4(√8+3)
Scrat [10]

Answer:

2(2.82 + 3)

2(5.82)

11.65

Step-by-step explanation:

3 0
2 years ago
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A rope is swinging in such a way that the length of the arc traced by a knot at its bottom end is decreasing geometrically. If t
nikdorinn [45]

Answer:

<em>The length of the arc on the sixth swing was </em><em>12.18 ft.</em>

Step-by-step explanation:

A rope is swinging in such a way that the length of the arc traced by a knot at its bottom end is decreasing geometrically.

The third arc is 22 ft. long and the seventh arc is 10 ft.

Hence, the 3rd term is 22 and 7th term is 10.

The length of the arc on the sixth swing is asked, so we have to calculate the 6th term.

We know the nth term in GP is,

T_n=ar^{n-1}

So,

T_3=ar^{3-1}=ar^2  ----------------1

T_7=ar^{7-1}=ar^6  ----------------2

Dividing equation 2 by 1,

\Rightarrow \dfrac{T_7}{T_3}=\dfrac{ar^6}{ar^2}

\Rightarrow \dfrac{10}{22}=\dfrac{ar^6}{ar^2}

\Rightarrow \dfrac{10}{22}=\dfrac{r^6}{r^2}

\Rightarrow \dfrac{r^6}{r^2}=\dfrac{10}{22}

\Rightarrow r^4=\dfrac{10}{22}

\Rightarrow r=\sqrt[4]{\dfrac{10}{22}}

\Rightarrow r=0.8211

Then the 6th term will be,

T_6=ar^{6-1}=ar^5  ----------------3

Dividing equation 2 by 3,

\Rightarrow \dfrac{T_7}{T_6}=\dfrac{ar^6}{ar^5}

\Rightarrow \dfrac{10}{T_6}=\dfrac{a(0.8211)^6}{a(0.8211)^5}

\Rightarrow \dfrac{10}{T_6}=0.8211

\Rightarrow T_6=\dfrac{10}{0.8211}=12.18\ ft

Therefore, the length of the arc on the sixth swing was 12.18 ft.


6 0
3 years ago
Draw a number line and show all numbers that …
stira [4]
(x-1)(x+1) = 0
x = 1 or x = -1

Ans : -1 and 1

-5 -4 -3 -2 -1  0 1  2  3 4  5
--|--|--|---|---|--|---|--|--|--|--|--


3 0
3 years ago
Read 2 more answers
PLEASE HELLPPPPPP
Fiesta28 [93]

Answer:

Y = 17

Step-by-step explanation:

31 - 17 = 14

14 x 7 = 98

5 0
2 years ago
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-2 (x+2) = -2+1<br><br>x = ?<br><br>○ 0<br>○ All real numbers<br>○ No solution​
nadya68 [22]
For the equation to equal x would be -1.
x = -1

-2 (-1+2) = -2 +1
-2+1 = -2+1
8 0
3 years ago
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