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3 years ago

Which statement below must be true about circle Q?

Mathematics

1 answer:

Firdavs [7]3 years ago

8 0

Answer:

rd5fbdu tgnxih8m

Step-by-step explanation:

1.tvfcueuywn

2.moiqwozm

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What is the domain of the function f(x)=45/(x-23)?

galben [10]

Domain is the set of numbers you can use
usually, domain=all real numbers except those that divide by zero

so find those exceptions
find what numbers make deonenator equal to 0 and exclude them
x-23 is denom
x-23=0
x=23

doman is all real numbers except 23

5 0

4 years ago

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A robot moving forward at a constant speed takes 2.5 hours to travel 1 kilometer. Moving forward at this same constant speed, it

makvit [3.9K]

Answer:

The length of the hallway is 10 m.

Step-by-step explanation:

Given:

Time taken to cover 1 km = 2.5 hours

Distance covered in 2.5 hours = 1 km

Therefore, speed of robot = $\frac{\textrm{Distance}}{\textrm{TIme}}=\frac{1}{2.5}=0.4\ km/h$

Now, speed is constant.

Now, time taken to cover the length of hallway = 90 s

Speed of the robot = 0.4 km/h

Converting 0.4 km/h to m/s, we multiply by the factor $\frac{5}{18}$ . This gives,

$0.4\times \frac{5}{18}=\frac{1}{9}\ m/s$

Now, distance of the hallway is equal to the product of speed and time. So,

Distance of hallway = Speed $\times$ Time

Distance of hallway = $\frac{1}{9}\times 90=\frac{90}{9}=10\ m$

Therefore, the length of the hallway is 10 m.

5 0

3 years ago

Radio signals travel at a rate of 3 × 108 meters per second. How many seconds will it take for a radio signal to travel from a s

blondinia [14]

The time taken for radio signal to the earth's surface we shall proceed as follows;
time=(distance)/(speed)
Distance=7.5×10^6 meters
speed=3×10^8 meters/second
therefore:
Time=(7.5×10^6)/(3×10^8)=0.025 seconds
We conclude that it will take the signal 0.025 seconds to reach the surface of the earth.

3 0

3 years ago

Diane is 23 years older than her daughter Amy and 6 years Diane will be twice as old as Amy how old are they now

Dmitry_Shevchenko [17]

The age difference between Diane and Amy remains the same. 6 year later, the age difference is still 23 years old.

6 years later,
Amy is 23 years old
Diane is 46 years old

Now,
Amy, 17 years old
Diane, 40 years old.

6 0

4 years ago

A customer at a department store has $45.75. How many neckties can the customer buy if each necktie costs $15.35?

Sveta_85 [38]

The customer can buy two neckties

5 0

4 years ago

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