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valentina_108 [34]
3 years ago
8

I confused a lot plz help

Mathematics
2 answers:
Naily [24]3 years ago
5 0
You have to divide 25 and 4 then add two
zaharov [31]3 years ago
4 0
(25 ÷ 4) + 2
↑↑↑↑↑↑↑↑↑
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Please Help this is the only one i dont know!!
Stella [2.4K]

Answer:

\large\boxed{x=\dfrac{23}{33}}

Step-by-step explanation:

\text{Let}\ x=0.\overline{69}\\\\x=0.696969...\qquad\text{multiply both sides by 100}\\\\100x=69.696969...\qquad\text{subtract}\ x\ \text{from}\ 100x:\\\\100x-x=69.696969...-0.696969...\\\\99x=69\qquad\text{divide both sides by 99}\\\\x=\dfrac{69}{99}\\\\x=\dfrac{23}{33}

7 0
3 years ago
The function L = 0.8T^2 models the relationship between L, the length in feet of a pendulum, and T, the period in seconds of the
Semmy [17]
The correct option is "d".
Given that L = 0.8T²
length of pendulum = 30ft

L= 0.8T²
30 = 0.8T²
T² = 30 / 0.8
T² = 37.5
T = √37.5 = 6.1 seconds
<span>So, 6.1 is the closest to the period in seconds for a pendulum that is 30 ft long.</span>
7 0
3 years ago
What is the value of x
Afina-wow [57]

Answer:

4

Step-by-step explanation:

Sin(30) = LJ/8sqrt(3)

Sin 30 = ½

LJ = 4sqrt(2)

LM = JM = x

x² + x² = (4sqrt(2))²

2x² = 32

x² = 16

x = 4

6 0
3 years ago
A cylindrical container holding sugar has a height of 14 inches and a diameter of 6 inches. Which of the following is the closes
Anna35 [415]
I have a lot to say I don’t think you
4 0
3 years ago
In one year, the number of times an average person's heart beats is 4.21 107
Sladkaya [172]
42100000, so this is in scientific notation.
7 0
3 years ago
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