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laiz [17]
3 years ago
11

The approximate distance in miles between Los Angeles and a commercial jet flying from Boston to Los Angeles can be found using

the function m=-475t+2,650, where t is the number of hours the jet has been flying. Which number of hours and minutes is closest to the amount of time that the jet has been flying if the jet is 1,500 miles from Los Angeles?
A.) 2 hours and 25 minutes
B.) 8 hours and 44 minutes
C.) 3 hours and 16 minutes
D.) 9 hours and 13 minutes
Mathematics
2 answers:
ki77a [65]3 years ago
5 0
You're given the value of m so you plug that in the equation given to get 1500=-475t+2650. Now with some algebra just solve it for t! so subtract 2650 and get -1150=-475t. Now divide by -475 and get 2.4. Now the t value is already in hours, so there's no conversions, and the closest answer is A! This makes sense because it's an approximation :)
Anika [276]3 years ago
3 0

A.) 2 hours and 25 minutes

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Use the diagram to answer the question. What is the measure of ∠A? Enter the correct value. Do not enter the degree symbol.
forsale [732]

Answer:

Measure of ∠A = 60.07°

Step-by-step explanation:

From the figure attached,

ΔABC is a right triangle,

Measure of side AC = 15 units

and measure of side BC = 13 units

By applying Sine rule in this triangle,

SinA = \frac{\text{Opposite side}}{\text{Hypotenuse}}

Opposite side of angle A = Side AC

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4 0
4 years ago
Quality control studies for Speedy Jet Computer Printers show the lifetime of the printer follows a normal distribution with mea
Anika [276]

Answer:

About 3 years Speedy Jet printers be guaranteed.

Step-by-step explanation:

Given : Quality control studies for Speedy Jet Computer Printers show the lifetime of the printer follows a normal distribution with

mean \mu = 4 and standard deviation  \sigma = 0.78

If the company wishes to replace no more than 10% of the printers.

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Solution :

Using Z- table,  

Z value corresponding to 10% or 0.10 = -1.28.

Applying z-score formula,

z=\frac{x-\mu}{\sigma}

The value of x is given by,

x=(z\times \sigma)+\mu

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x=3.0016

So, approx 3 years.

Therefore, About 3 years Speedy Jet printers be guaranteed.

8 0
3 years ago
The product od 2 and y is at least 10
alexgriva [62]
Hello There!

It could be represented by this:
xy \geq 10

Hope This Helps You!
Good Luck :) 

- Hannah ❤
8 0
4 years ago
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