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Paul [167]
3 years ago
11

I need help with this asap. ​

Mathematics
1 answer:
Andre45 [30]3 years ago
8 0

Answer:

i need points

Step-by-step explanation:

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I rlly need help with this gr 11 math problem
prohojiy [21]

Answer:

a) \frac{d-5.50}{0.45}

b) The inverse function is a reflection of the original function across the line

y = x. For example, if the function f applied to an input x gives a result of y, then applying its inverse function g to y gives the result x. So you would use it to find the x-value at a y just like you use the original to find the y value at an x.

Step-by-step explanation:

To do an inverse of a function you first switch the independent variable (d) and the dependent variable (c).

d = 0.45c + 5.50

Then you solve for c

d - 5.50 = 0.45 c

c = (d-5.50)/0.45

8 0
3 years ago
5+x+(−2)=−85+x+(−2)=−8<br><br><br> x=?
sashaice [31]
5+x+(-2)=-85+x+(-2)=-8\\&#10;x-3=x-87=-8
x has no solution.
5 0
3 years ago
In a study of 225 adults, the mean heart rate was 72 beats per minute. Assume the population of heart rates is known to be appro
Aleonysh [2.5K]
<span> The lower and upper bounds of the confidence intervals must be equally distanced from the mean 
so it will be
</span><span>70.9 - 73.1 
</span>hope it helps
3 0
3 years ago
Read 2 more answers
Luka buys a special pass to a fair for $7 that allows him to go on every ride for $1 each. How many rides will Luka need to ride
ASHA 777 [7]

Answer:

He would have to do 13 rides.

Step-by-step explanation:

If he initially pays $7, which lets him pay only $1 for each ride, so when he spends $20, he would have done 13 rides.

5 0
3 years ago
In a flight of 600 km, the speed of the aircraft was slowed down due to bad weather. The average speed of the trip was decreased
UkoKoshka [18]

The average speed would be 600 km/hr.

Step-by-step explanation:

Let the original speed be 'x'

Let the decreased speed be 'x-200'

Distance = 600 km

Time increased by 30 minutes

According to question, it becomes,

\dfrac{600}{x-200}-\dfrac{600}{x}=\dfrac{30}{60}\\\\\dfrac{x-(x-200)}{x^2-200x}=\dfrac{1}{2\times 600}\\\\\dfrac{200}{x^2-200x}=\dfrac{1}{1200}\\\\240000=x^2-200x\\\\x^2-200x-240000=0\\\\x=600,-400

So, The average speed would be 600 km/hr.

5 0
3 years ago
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