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qaws [65]
3 years ago
13

I need help please help me please if you have done this

Mathematics
2 answers:
Ludmilka [50]3 years ago
8 0

Answer:x>-1

Step-by-step explanation:

GarryVolchara [31]3 years ago
3 0

Answer:

x>-1

Step-by-step explanation:

On the number line you can see that x is greater than -1

By the way the dark blue line represents what x equals :)

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Suppose a normal distribution has a mean of 62 and a standard deviation of4. What is the probability that a data value is betwee
saw5 [17]

SOLUTION

From the given data the mean is 62 and standard deviation is 4

It is required to find the probability that a data value is between 57 and 62

That is:

P(57\lt x\lt65)

The z scores is calculated using:

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

Using the x values it follows:

z=\frac{57-62}{4}=-1.25

Also,

z=\frac{65-62}{4}=0.75

Thus the required probability is:

P(-1.25The proability is:[tex]P(-1.25This can be expressed as percentage as:[tex]P(-1.25\lt z\lt0.75)=66.8\%

Therefore the correct option is C

8 0
1 year ago
Allen traveled for 7 hours at a constant rate of 40 miles per hour. Anna traveled the same distance at a constant rate of 50 mil
TEA [102]

Here is the correct order of the step:

Identify: Anna's time is the unknown

Strategize : let x = Anna's time

Set up : 7(40) = x(50)

Solve: x = 5.6

Check: 7(40) = 5.6(50)

<h3>What is Anna's time?</h3>

The first step is to determine the distance Allen travelled:

Distance = average speed x time

40 x 7 = 280 miles  

The second step is to determine the time it took Anna to travel 280 miles.

Time = distance / average speed

280 / 50 = 5.6 hours

To learn more about average speed, please check: brainly.com/question/21734785

#SPJ1

3 0
2 years ago
Calculate the product using partial products. 400×45.2= 14.9×100= 200×38.4= 900×20.7= 76.2×200=
DiKsa [7]

Answer:

A. 400*45.2=400*45+400*0.2=18000+80=18080

B. 14.9*100=15*100-0.1*100=1500-1=1490

C. 76.2*200=76*200+0.2*200=15200+4=15204

Step-by-step explanation:

5 0
3 years ago
The perimeter of a figure is the total length of all of its sides.
Fantom [35]

Answer:

True.

Step-by-step explanation:

That is exactly what a perimeter is. Hope this helps

6 0
2 years ago
What to did on this .paper thank you for your. please help me
matrenka [14]
So, to solve the questions on your paper, you need to first have all of the bottom numbers on the fractions similar numbers.  So if you have the numbers 1/4 and 4/8, you need to get them to both be the same number.  Therefore, 1/4 should become 2/8, because you doubled the bottom number (you also then need to do the same to the top number).  You don't need to change 4/8, because it's bottom number is already 8.  Then, you can take 4/8 and 1/8 and add them.  To add them, you just add the top numbers.  The top numbers make 5, so then you add the denominator, and make the number 5/8.  Since you can't simplify 5/8, just keep it.  But if it was 4/8, you could simplify it to 1/2.  You can do all of this same to all of the numbers on your paper.  :D  If you are subtracting, subtract only the top numbers, but if you need to multiply or divide, multiply/divide both numerator AND denominator.  :D I hope I helped!  If I didn't, please tell me, or just delete my answer. :D
3 0
3 years ago
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