1 year ago

This chart shows how much data Ryan used on his mobile phone. What was the mean amount he used over 5 months?

Mathematics

1 answer:

Anon25 [30]1 year ago

5 0

Answer:

shush

Step-by-step explanation:

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Ahmed and Gavin are playing both chess and checkers. The probability of Ahmed winning the chess game is 45\%45%45, percent. The

Brilliant_brown [7]

Answer: A - Ahmed wins the chess game

Step-by-step explanation:

7 0

2 years ago

In ΔMNO, the measure of ∠O=90°, ON = 65, MO = 72, and NM = 97. What is the value of the tangent of ∠M to the nearest hundredth?

PilotLPTM [1.2K]

Answer:

Therefore the value of tangent of ∠ $M$ is $42$ °.

Step-by-step explanation:

Given that,

In Δ $MNO$ , ∠ $O=90$ °, $ON=65,$ $MO=72,$ and $NM=97.$

and we have to find the value of tangent of ∠ $M.$

Diagram of the given triangle is shown below:

Now,

Δ $MNO$ is a right angle triangle, so we can use all the trigonometric ratio.

$sin\alpha =\frac{Perpendicular}{Hypotenuse}$

$cos\alpha =\frac{Base}{Hypotenuse}$

$tan\alpha =\frac{sin\alpha }{cos\alpha }$ = $\frac{Perpendicular}{Base}$

tangent of ∠ $M$ = $\frac{Perpendicular}{Base}$

= $\frac{ON}{MO}$

= $\frac{65}{72}$

= $0.90278$

∴∠ $M$ = $tan^{-1} (0.90278)$

= $42.0750$ ° ≅ $42$ °

Therefore the value of tangent of ∠ $M$ is $42$ °.

4 0

2 years ago

Announcements for 84 upcoming engineering conferences were randomly picked from a stack of IEEE Spectrum magazines. The mean len

Marina86 [1]

Answer:

Step-by-step explanation:

Hello!

You need to construct a 95% CI for the population mean of the length of engineering conferences.

The variable has a normal distribution.

The information given is:

n= 84

x[bar]= 3.94

δ= 1.28

The formula for the Confidence interval is:

x[bar]± $Z_{1-\alpha/2}$ *(δ/n)

Lower bound(Lb): 3.698

Upper bound(Ub): 4.182

Error bound: (Ub - Lb)/2 = (4.182-3.698)/2 = 0.242

I hope it helps!

6 0

2 years ago

Which equation combines with the given equation to form a system of equations with the solution x = 3 and y = 9? x + 2y = 21

max2010maxim [7]

Yes. x=3 and y =9 are the solutions.
Because if you change x=3 and y =9 ,you will have
3+2* 9 =21
3+18 =21
21 =21 (true)

6 0

2 years ago

Read 2 more answers

There is a bell at the top of a tower that is 45m high. The bell weighs 190 kg. How much potential energy does the bell have?

Slav-nsk [51]

Answer:

83.79 kJ

Step-by-step explanation:

The potential energy is the product of weight and height, where weight is in newtons.

PE = Mgh = (190 kg)(9.8 m/s^2)(45 m) = 83,790 J

7 0

1 year ago

This chart shows how much data Ryan used on his mobile phone. What was the mean amount he used over 5 months?​

This chart shows how much data Ryan used on his mobile phone. What was the mean amount he used over 5 months?