When Christopher runs the 400 meter dash, his finishing times are normally distributed with a mean of 61 seconds and a standard deviation of 1 second. What is the probability that in a given race, his finishing time will be faster than 60 seconds, to the nearest thousandth?

Answer:

125

Step-by-step explanation:

Answer:   I think it's D

Step-by-step explanation: I say the answer is (B) because  in the full question, it's asking how much would 2.5 means, therefore, you're multiplying, to get 125.

If 1cm=50km Then 2.5 is 50km, 50km, 25

50+50+25=125, or simply just multiply. 25 is half of 50, so with the 2.5 there, doesn't make it a whole number, therefore, making the 25 in it's place, because of the 2.5.

9514 1404 393

Answer:

  17.98

Step-by-step explanation:

The sequence is geometric with first term a1 = 12 and common ratio r = 1/3. Put these numbers in the formula and do the arithmetic.

  [tex]S_n=a_1\cdot\dfrac{1-r^n}{1-r}\\\\S_6=12\cdot\dfrac{1-\dfrac{1}{3^6}}{1-\dfrac{1}{3}}=12\cdot\dfrac{3}{2}\cdot\dfrac{728}{729}=\dfrac{1456}{81}\approx\boxed{17.98}[/tex]

Answer:

where are the equations?

Step-by-step explanation:

tell me and I will edit my answer to answer ur question

Answer:

Step-by-step explanation:

Answer:

0.000002

Step-by-step explanation:

since its -6+2 you need to move the decimal place in 2, 6 places foward. So the number would go from 2 to 0.000002.

Answer:

6x+y=2

Step-by-step explanation:

y=-6x+2

6x+y=2

Answer:

The mean is: 19

Step-by-step explanation:

Add all of those numbers up (133)

Divide it by the total amount of numbers (7)

133÷7=19

Answer:

Mean: 19 | Median: 12 | Mode: 33 | Range: 31

Step-by-step explanation:

It will help you find any mean: https://www.calculators.org/math/mean-median-mode.php

Answer:

95°

Step-by-step explanation:

By exterior angle theorem:

y = 120° - 25° = 95°

Hope it helps you in your learning process

Answer:

[tex]61600[/tex]

Step-by-step explanation:

[tex]10^4\\\\10*10*10*10\\\\100*100\\\\10000\\\\\\10000*6.16\\\\61600[/tex]

Answer:

1257.14 m or 1.26 km

Step-by-step explanation: hope this helps :)

Answer:

29

Step-by-step explanation:

(38+27+23+19+26+X)/6=27

133 + X = 162

X = 29

Answer:

29

Step-by-step explanation:

The mean is calculated as

mean = [tex]\frac{sum}{count}[/tex]

let x be the score required to give a mean of 27 in the 6 games

[tex]\frac{38+27+23+19+26+x}{6}[/tex] = 27 ( multiply both sides by 6 )

133 + x = 162 ( subtract 133 from both sides )

x = 29

He requires to score 29 points

Answer:

Unit rate!

Step-by-step explanation:

A unit rate is a rate that has a denominator of 1!

~ LadyBrain

Answer:

the last one or the second, sorry if you get it wrong also can you like and, also  can you give me brainly!!

Step-by-step explanation:

Answer:

53°

Step-by-step explanation:

Use sine cosine or tangent (SOHCAHTOA). For this example I'll use sine.

For sine you'd use the equation sin(x)=[tex]\frac{opp}{hyp}[/tex] where x is the missing angle measure

the opposite side from x is 45 cm and the hypotenuse is 53 cm

sin(x)=[tex]\frac{45}{53}[/tex]

then rearrange the equation like this x=[tex]sin^{-1}[/tex]([tex]\frac{45}{53}[/tex])

most graphing calculators should solve it from there if you plug it in, hope this helps! :)

Answer:

To get C

180-163(angles on a straight line)

=17

17 is vertically opposite c

And from geometry... Vertically Opposite angles are equal.

a=90°

b=163° too (Vertically opposite angles)

e=70(vertically opp. angles)

d=110.

Answer:

the correct answer is that it's true :)

Answer:

???ummm no details

Step-by-step explanation:

Step-by-step explanation:

Triangle and pyramid

Because the others wouldn't give you a prism

Answer:

16/27

Step-by-step explanation:

12 boys and 16 girls

She already chose a boy so now there are (11+16) = 27 possible outcomes

There are 16 favorable outcomes(girl)

so the fraction is 16/27

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

I = (2,000) (0.08) (6)

I = (160) (6)

Steve pays $960 in interest

Step-by-step explanation:

I completed the quiz :)

Answer:

Domain: {-2, -1, 0, 1, 2, 3}

Range: {-5, -3, -1, 1, 3, 5}

Step-by-step explanation:

The domain is the set containing all the x-coordinates, and the range is the set containing all the y-coordinates.

Domain: {-2, -1, 0, 1, 2, 3}

Range: {-5, -3, -1, 1, 3, 5}

Answer:

5:20

Step-by-step explanation:

Answer:

m3 should be 70°

all internal angles of a triangle add up to 180

180-35-75 = 70

Answer:

All angles of a triangle add up to 180°.

there m1+m2+m3=180°

35+75+m3=180

110°+m3=180°

m3=180°-110°

m3=70°

Answer is A.

Answer:

7.5t

Step-by-step explanation:

Answer:

Supplementary angles.

Step-by-step explanation:

We can define two big groups of pairs of angles.

Complementary and supplementary angles.

Two angles are complementary if the sum of their measures is equal to 90°

Two angles are supplementary if the sum of their measures is equal to 180°

Here, we have the angles 160° and 20°, and we know that their sum is 180°

Then we can conclude that the given angles fall in the group of the supplementary angles.

Answer:

3

*if you ever need to do more math like this, I suggest using desmos :)

Answer: 3

Step-by-step explanation: So 3 square rooted 1.732² so there you have it