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ludmilkaskok [199]

2 years ago

12

Tali is trying to find the thickness of a page of his telephone bookTo do this, he takes a measurement and finds out that 550 pa

ges measure 1.25 inches. What is the thickness of one page of the phone book ?

1 answer:

alina1380 [7]2 years ago

5 0

Answer:245

Step-by-step explanation:

hope this helps

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Find the greatest 3 digit perfect square

klio [65]

Answer:

961

Step-by-step explanation:

this is equivalent to(31*31)

5 0

3 years ago

The period of a pendulum is the time the pendulum takes to swing back and forth one full time. The function I = 0.81t^2 relates

kogti [31]

Answer:

b. t = 10.5 seconds.

Step-by-step explanation:

l = 0.81t^2

90 = 0.81t^2

t^2 = 90 / 0.81

t^2 = 111

t = 10.5 seconds.

5 0

2 years ago

PLEASE HELP!!!!! The velocity of sound in air is given by the equation , where v is the velocity in meters per second and t is t

jeyben [28]

The equation of velocity of sound in air is v = 20 √(273 + t). In this problem, we need to find the temperature when the velocity is 329 meters/s. You need to measure the time it takes a sound to travel a measured distance in order to measure its speed in air.

Given:

Velocity of sound in air equation = v = 20 √(273 + t)

Velocity = 329 m/s

To solve:

V = 20 √(273 + t)

<span>
329 = 20 * sqrt(273 + t)</span>

<span>
16.45 = sqrt(273 + t)</span>

<span>
273 + t = 16.45^2</span>

<span>
t- 16.45^2-273</span>

<span>
t = -2.4 degrees Celsius</span>

<span>So, the temperature when the velocity is 329 meters per second is -2.4 degrees Celsius.</span>

3 0

3 years ago

A large totem pole near Kalama, Washington, is 100 feet tall. On a particular day at noon it casts a 219-foot shadow. What is th

zhenek [66]

Answer: Angle of elevation of sun at that time is 24.51° .

Step-by-step explanation:

Since we have given that

Height of a large totem pole near Kalama, Washington = 100 feet

Length of a shadow at noon = 219 foot

We need to find the angle of elevation of sun at that time .

As we know the formula for "Tangent ":

$\tan\theta=\frac{AB}{BC}\\\\\tan\theta=\frac{100}{219}\\\\\tan\theta=0.456\\\\\theta=\tan^{-1}(0.456)\\\\\theta=24.51\textdegree$

Hence, Angle of elevation of sun at that time is 24.51° .

7 0

2 years ago

HELPPPPPPPPPPPPPPPPPPP

FrozenT [24]

Answer: (A)
Explanation: For there to be a solution at any one point, both inequalities must share a common point. This point will then satisfy both inequations, becoming a solution to both inequality.

Let's pick (A).
For there to be at least one solution, the first inequality must have a solution of $x \geq 3$ . Since the left side has clearly no points common to both graphs. Hence, no solution can exist that will satisfy both.

All of the other graphs have at least one point in common.
(B) has $x \leq -1$
(C) has $x = 1$
(D) has $x \leq -2$

7 0

2 years ago

Read 2 more answers