Question 1

2 pts

(09.05)

At an intersection, the red light times are normally distributed

with a mean time of 3 minutes and a standard deviation of 0.25

minutes. Approximately what percent of red lights last between

2.5 and 3.5 minutes? (2 points)

32%

68%

Answer:

1/4

Step-by-step explanation:

1/2*1/2

Answer:

[tex] - 6(4a + 3) \\ =( - 6 \times 4a) + ( - 6 \times 3) \\ = - 24a - 18 \\ [/tex]

Step-by-step explanation:

-6(4a+3)

(-6×4a) (-6×3)

Answer:

Step-by-step explanation:

1) 3(x + 2 ) +4  = 31

3*x + 2*3 + 4 = 31

3x + 6 + 4 = 31

  3x + 10   = 31           {Subtract 10 from both sides}

          3x = 31 - 10

         3x = 21        {divide both sides by 3}

          x = 21/3

x = 7

This equation has one solution

2) 3x + 1 = 3x + 9

Subtract 3x form both sides

3x + 1 -3x = 3x + 9 - 3x

1 ≠ 9

There is no solution for this equation.

3) 2x - 4 = 2x -4

This equation has many solution

Answer:

wy+wz+xy+xz

Step-by-step explanation:

C.) wy+wz+xy+xz  could be factored by grouping.

Method of factorization by grouping the terms:

(i) From the groups of the given expression a factor can be taken out from each group.

(ii) Factorize each group.

(iii) Now take out the factor common to group formed.

= wy + wz + xy + xz

= w(y+z) + x(y+z)

= (w+x)(y+z)

Learn more about factorization by grouping here

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#SPJ2

Answer:

5x11=55x10=550meters:)

Step-by-step explanation:

Answer:

62.82

Step-by-step explanation:

C=2πA=2·π314≈62.81592cm

Answer:

c=62.82 cm

Step-by-step explanation:

A=pir^2

C=2pir

C=2sqrt(piA)=2sqrt(pi×314)=62.81592 cm

Answer:

60%

Step-by-step explanation:

Answer:

60%

Step-by-step explanation:

Answer: the line across the circle is the diameter, you find diameter by multpyling radius by two

Step-by-step explanation:

Answer:

x^87

Step-by-step explanation:

Multiplying x^22 and x^7 results in x^29.

Then we have:

(x^29)^3 = x^87

Recall that (a^b)^c = a^(bc) and that a^b*a^c = a^(b + c)

1=63

3=163

4=325

I hope this answered your question

Applying the inscribed angle theorem, the missing angles are:

Based on the inscribed angle theorem, we have the following relationships:

Given the following:

Find m(RS):

m(RS) = 180 - m(RU)

Substitute

m(RS) = 180 - 50

m(RS) = 130°

Find m∠RUS:

m∠RUS = 1/2(m(RS) [inscribed angle theorem]

Substitute

m∠RUS = 1/2(130)

m∠RUS = 65°

Find m∠UST:

m∠UST = 1/2(m(UT))

Substitute

m∠UST = 1/2(30)

m∠UST = 15°

Learn more about the inscribed angle theorem on:

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Answe

[tex]\huge\mathfrak\red{hello} \\ \\ sorry \: again[/tex]

Answer:

Numbers:

45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55

Chance:

68.27%

Answer:

94

Step-by-step explanation:

I asked alexa

Answer:

y = -1/6x + 2

Step-by-step explanation:

y = -1/6x + b

3 = -1/6(-6) + b

3 = 1 + b

2 = b

Answer:

2.7 x 10^-4 = 0.00027

Step-by-step explanation:

This equation is already in standard form. So if you're looking for the answer, there it is.

Answer:

A. Line r intersects line p

Step-by-step explanation:

to find the second graph multiply the slope of line p by -10

slope is 1/5 or 0.2

So,

0.2 * -10 = -2

slope of second line is -2

Graph shown

Altered line shown in blue

Line p shown in green

As you can see, they intersect and meet no other answers

Answer:

108

Step-by-step explanation:

triangles of the sides 3×4=12

5×8=40

4×8=32

3×8=24

add everything

Answer:

y = 4/5x + 1

Step-by-step explanation:

used points (0,1) and (5,5) to find slope of 4/5

Answer:

D

Step-by-step explanation:

The Answer Is Just D. Don't Ask Me How Just Trust Me It's D. Sorry I Can't Give An Explanation! I Not That Smarts. But It Is D! Have A Good Day!

Answer:

3/ 8 ; 3/8

Step-by-step explanation:

MATHEMATICS

vowels in mathematics = (A, E, I)

letters in mathematics = (M, A, T, H, E, I, C, S)

Probability = required outcome / Total possible outcomes

Required outcome = vowels in mathematics = 3

Total possible outcomes = letters in mathematics = 8

Probability of drawing a vowel letter tiles = 3/8

2.)

Spinner division :

Red = 4 ; white =2 ; green = 1 ; blue = 1

Total divisions = 8

Probability (landing on blue) = number of blue / total

P(landing on blue) = 1 / 8

P(landing on white) = 2/ 8 = 1/4

P(landing on blue or white) = 1/8 + 2/8 = 3/8

Answer:

53.75.. I didn't round it either

Step-by-step explanation:

Have nice day/night :)

Answer:

John would be 69 in.

Step-by-step explanation:

Answer:

they mean numbers that 4,8 12 can go into and there between 55 and 100 answers: 60,72,80,96,100

Answer:

-120

Step-by-step explanation:

Answer:

[tex]assume \: its \: is \: a \: right \: angled \: triangle \\ < ABC + < ACB + 90 \degree = 180 \degree \\< ABC = 180 \degree - (74 + 90)\degree \\ < ABC = 16\degree[/tex]

Answer:

k(x) = 1.20^x

Step-by-step explanation:

Here, we want to get a function

The output in this case refers to k(x)

the input refers to the value x

So, for every 1 increase in x, we want k(x) to increase by 20%

20% is same as 20/100 = 0.2

So at an initial value of 1, each increase if 20% will be 0.2 + 1 = 1.2

So therefore, we have the function as;

k(x) = 1.20^x

Answer:

it should be 47 because of (3x-4)

Step-by-step explanation: