The heights of all the newborns in a certain country are
normally distributed, with a mean of 20 inches and a standard
deviation of 2 inches. A mother just delivered a baby that is 21
inches long. Which of the following represents the a score of
the baby's height? (Round your answer to two decimal
places.)
A. 0.50
B.-0.50
C.-1.50
D.1.50

Answers

Answer 1

Answer:

The answer is c

Step-by-step explanation:


Related Questions

A-29
B-81
C-87
D-93
Please someone help I don’t get this

Answers

Answer:

B-29...b-29...b-29...B-29... B-29

Find the equation of the exponential function represented by the table below:
HELLPPP

Answers

Answer:

y = 4 [tex](\frac{1}{2}) ^{x}[/tex]

Step-by-step explanation:

For an exponential function in the form

y = a [tex]b^{x}[/tex]

Use ordered pairs from the table to find values of a and b

Using (0, 4 ), then

4 = a [tex]b^{0}[/tex] ( [tex]b^{0}[/tex] = 1 ), thus

a = 4, so

y = 4 [tex]b^{x}[/tex]

Using (1, 2 ) , then

2 = 4 [tex]b^{1}[/tex] = 4b ( divide both sides by 4 )

b = [tex]\frac{1}{2}[/tex]

Thus exponential function is

y = 4 [tex](\frac{1}{2}) ^{x}[/tex]

Answer:

y = 4 (\frac{1}{2}) ^{x}

Five friends compete in a dart-throwing contest. Each one has two darts to throw at the same circular target, and each individual's score is the sum of the scores in the target regions that are hit. The scores for the target regions are the whole numbers 1 through 10. Each throw hits the target in a region with a different value. The scores are: Alice—16 points, Ben—4 points, Cindy—7 points, Dave—11 points, and Ellen 17—points. Who hit the region worth 6 points?

Answers

Answer:

Alice

Step-by-step explanation

Ben=1+3

Cindy=2+5

Dave=4+7

Alice=10+6

Ellen is 9+8

The answer is gonna be Alice because you can only use each number once.

POSSIBLE SCORES

Alice 16

6,10

7,9

(8+8 won't work because that would be a repeating number)

Ben 4

1,3

(2+2 won't work because that would be a repeating number)

Cindy 7

1,6

2,5

3,4

Dave 11

1,10

2,9

3,8

4,7

5,6

Ellen 17

7,10

8,9

Since the only possibilities for Ben is hitting 1 and 3, all other people can't hit 1 or 3.

Alice 16

6,10

7,9

Cindy 7

2,5

Dave 11

2,9

4,7

5,6

Ellen 17

7,10

8,9

Since the only possibilities for Cindy is hitting 2 and 5, all other people can't hit 2 or 5.

Alice 16

6,10

7,9

Dave 11

4,7

Ellen 17

7,10

8,9

Since the only possibilities for Dave is hitting 4 and 7, all other people can't hit 4 or 7.

Alice 16

6,10

Ellen 17

8,9

Ellen must have hit 8 and 9. Alice must have hit 6 and 10.

Alice hit 6 points.

A photo is 8 cm long and 6 cm wide. It is enlarged to make a print that is 18 cm wide.
What is the length of the enlargement?

Answers

Answer:

24 cm

Step-by-step explanation:

The photo was 6 cm wide, and was made into 18 cm wide. Divide 18 with 6:

18/6 = 3

To solve for the length enlargement, multiply 3 with the length, or 8 cm:

8 x 3 = 24

24 cm is the length of the enlargement.

~

Vanessa built an enclosed area in the shape of a square in her backyard for her dogs. She used an outside wall of the garage for one of the sides. She had to buy 3 yards of
fencing in order to build the other sides. What is the area of the enclosure?

Answers

3 yards/3 walls = 1 yard per wall

Area = Length * Width

Area = 1 * 1 = 1 square yard

A rectangular prism has a length of 9 in., a width of 4 in., and a height of 1 1/2in. The prism is filled with cubes that have edge lengths of 1/2 in. How many cubes are needed to fill the rectangular prism?

Answers

Hey there! :)

Answer:

432 cubes.

Step-by-step explanation:

Volume of rectangular prism: V = l × w × h

V = 9 × 4 × 1.5

V = 54 in³

Volume of cubes: V = s³

V = 1/2³

V = 1/8 in³

Set up an equation to solve for the # of cubes needed (x):

54 = 1/8x

Divide both sides by 1/8:

54 × 8/1 = x

x = 432 cubes.

For each beton, state whether it represents a function

Answers

Answer:

so

no two points on a random vertical line in the graph

1 no

2 no

3 yes

4 no

5 yes

6 yes

to make it easier to explain you can say. Number 1 box is 57 number 2 box is77 something like that

Answers

Answer:

Box 1=5 Box2=6 Box3=8 Box4=200

Step-by-step explanation:

Answer:

Step-by-step explanation:

No.of balloons each will get = 5

no.of greeting cards = 6

no.of apples in each basket = 8

no. of words = 200words

hope it helps

you worked 6 and three fourths hours on Monday Seven and one fourth on Tuesday eight and one fourth on wendsey seven and one fourth on Thursday seven and three fourths on Friday how many hours did you work for the week

Answers

Answer:

37.25

Step-by-step explanation:

6.75+7.25+8.25+7.25+7.75=37.25

Pls Mark as Brainliest

Using the completing-the-square method, rewrite f(x) = x2 + 10x + 7 in vertex form

Answers

Answer:

f(x) = (x - (-5))^2 + (-18)

Step-by-step explanation:

Given:

f(x) = x^2 + 10x + 7

Rewrite f(x) in vertex form

Solution:

f(x) = ax^2 + bx + c is a quadratic function.

The vertex form of f(x) is a(x - h)^2 + k, where (h, k) is the vertex.

=> f(x) = x^2 + 10x + 7

          = x^2 + 10x + 25 - 18

          = (x + 5)^ - 18

          = (x - (-5))^2 + (-18)

=> f(x) can be rewritten in form of a(x - h)^2 + k, where (h, k) is the vertex, with a = 1, h = -5, k = -18

the number 4,928 will be rounded to the nearest hundred. what is the rounding digit​

Answers

Answer:

4928 rounded to the nearest hundred is:

4900

Step-by-step explanation:

Hope this hepls you!!

The number 4,928 will be rounded to the nearest hundred is 4900.

What is rounding off numbers?

When a number is rounded off, its value is maintained but is brought closer to the next number, simplifying the number. For entire numbers as well as decimals at different places of hundreds, tens, tenths, etc., it is done. The crucial figures are preserved when numbers are rounded off.

Given to round off 4928 to the nearest 100

steps to round off,

Determine the two consecutive multiples of 100 that bracket 4928

4928 is between 4900 and 5000

4950 is the midpoint between 4900 and 5000

from the number line, 4928 is less than the midpoint 4950,

Therefore, 4928 rounded to the nearest 100 is 4900.

Hence the digit is 4900.

Learn more about rounding off numbers;

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Solve -8x+4 ≤ 36

A. x ≥ -4
B. x ≤ 4
C. x ≥ 4
D. x ≤ -4

Answers

Answer:

x≥-4

Step-by-step explanation:

-8x≤36-4

-8x≤32

x≥32/-8 when divide by minus you flip  from≤ to ≥

x≥-4

Answer:

x ≥-4

Step-by-step explanation:

-8x+4 ≤ 36

Subtract 4 from each side

-8x+4-4 ≤ 36-4

-8x ≤ 32

Divide by -8 remembering to flip the inequality

-8x/-8 ≥ 32/-8

x ≥-4

Evaluate the following expression when x = 6 and y = 2: Fraction with x squared plus y cubed in the numerator and 2 plus x in the denominator. 2.25 5.5 17.25 27.5

Answers

Answer:

Option B.

Step-by-step explanation:

The given expression is

[tex]\dfrac{x^2+y^3}{2+x}[/tex]

We need to find the value of given expression when x=6 and y=2.

Substitute x=6 and y=2 in the given expression.

[tex]\dfrac{x^2+y^3}{2+x}=\dfrac{(6)^2+(2)^3}{2+(6)}[/tex]

                   [tex]=\dfrac{36+8}{8}[/tex]

                   [tex]=\dfrac{44}{8}[/tex]

                   [tex]=5.5[/tex]

The value of given expression is 5.5 when x=6 and y=2.

Therefore, the correct option is B.

Answer:

he given expression is

We need to find the value of given expression when x=6 and y=2.

Substitute x=6 and y=2 in the given expression.

                   

                   

                   

The value of given expression is 5.5 when x=6 and y=2.

Therefore, the correct option is B.

Step-by-step explanation:

Which of these sets of points lie within plane w?

A.
Cand G
B.
Hand E
C.
C and E
D
A and D

Answers

Answer:

option c boo if it's for plata

what is a point-slope equation of the line with slope -13 that goes through the point (5,7)

Answers

Answer:

y - 7 = -13( x-5)

Step-by-step explanation:

The  point slope form of a line is

y-y1 = m(x-x1)

The slope is -13 and the point is (5,7)

y - 7 = -13( x-5)

Answer:

PoInTsSsSsSsSs

Step-by-step explanation:

a) Change 2800 cm³ into litres.

b) Change 12.4/ into cm³.​

Answers

Answer:

[tex]\huge\boxed{a)\ 2,800cm^3=2.8l}\\\boxed{b)\ 12.4l=12,400cm^3}[/tex]

Step-by-step explanation:

[tex]1l=1dm^3\\\\1dm=10cm\to1dm^3=(10cm)^3=1,000cm^3\\\\\text{therefore}\ 1l=1,000cm^3\to1cm^3=\dfrac{1}{1,000}l=0.001l\\\\a)\ 2,800cm^3=2,800\cdot0.001l=2.8l\\\\b)\ 12.4l=12.4\cdot1,000cm^3=12,400cm^3[/tex]

Answer:

a) 2.8 liters

b) 12400 cm³

Step-by-step explanation:

1 cm³ = 1 mL

1000 mL = 1 L

a)

2800 cm³ × (1 mL)/(1 cm³) × (1 L)/(1000 mL) = 2.8 L

b)

12.4 L × (1000 mL)/(1 L) × (1 cm³)/(1 mL) = 12400 cm³

solving linear inequality: 2x + 4

Answers

A

2x+4>16 equals 2x> 12
x>6

Jessica purchased a 600-minute pre-paid phone card and called her sister at college. After talking to her sister "t" minutes, she had less than 600 minutes on her calling card. (a) Write an equation to determine the number of minutes remaining on the card. (b) Now, suppose she talked to her sister for 65 minutes, determine how many minutes she has left on her card.

Answers

Answer:

1) 600-t

2) 600-t=65

=>t=535

Please help me with this question

Answers

Answer:

E.

Step-by-step explanation:

so first you would add 8 to both sides to get

3w = t + 8

then divide both sides by 3

w = (t + 8) / 3

So the answer is E.

Answer: E) w = (t+8)/3

Step-by-step explanation:

Solve for w in terms of t means you have to isolate w.  Thus, simply do the following:

[tex]3w-8=t\\3w=t+8\\w=\frac{t+8}{3}[/tex]

Hope it helps <3

Does this table represent a function? Why or why not?
Hours of
Training
10
20
30
40
50
60
70
Monthly
Pay
1100
1200
1300
1400
1500
1600
1700
O A. Yes, because every x-value corresponds to exactly one y-value.
O B. Yes, because the y-values are positive numbers.
O C. No, because none of the yvalues are the same.
O D. No, because each x-value is different,​

Answers

The answer is A; every x-value must correspond to ONE y-value only. y-values can correspond with as many x-values as they want, but if you see an x-value corresponding with more than one y-value, that's not a function.

The table represent the function because every x-value corresponds to exactly one y-value.

What is function?

In mathematics, a function is represented as a rule that produces a distinct result for each input x. In mathematics, a function is indicated by a mapping or transformation. Typically, these functions are identified by letters like f, g, and h. The collection of all the values that the function may input while it is defined is known as the domain. The entire set of values that the function's output can produce is referred to as the range. The set of values that could be a function's outputs is known as the co-domain.

Given:

Hours of Training            Monthly  Pay

                                                         

10                                              1100

20                                              1200

30                                              1300

40                                              1400

50                                              1500

60                                              1600

70                                              1700

As, We can see the input values are distinct and have corresponding output.

Hence, the table represent the function because every x-value corresponds to exactly one y-value.

Learn more about Function here:

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Help! I'm trying to solve this for A and B, and it keeps telling me I'm wrong. The equation is:

√x(7x-4√x)=Ax^(3/2) + Bx
Where A =
and B =

Answers

Answer:

A must be 7 and B must be -4

Step-by-step explanation:

Perform the indicated multiplication, obtaining:

7x^(3/2) - 4x  =  Ax^(3/2) + Bx

Then A must be 7 and B must be -4


Write each ratio in its simplest form.
A) 9 feet: 4 yards
B) 5 gallons : 8 quarts
C) 800 centimeters: 2 meters

Answers

Answer:

A. 4 yards = 12 ft

9 ft : 12 ft = 3:4

B. 5 gallons = 20 quarts

20 quarts : 8 quarts = 5:2

C. 2 meters = 200 cm

800 cm : 200 cm = 4:1

Answers:

A) 3:4

B) 5:2

C) 4:1

Step-by-step explanation:

Convert 4 yards to feet.

1 yard = 3 feet

4 yards = 12 feet

9 feet : 12 feet

Simplify the ratio.

9/3 : 12/3

3 feet : 4 feet

3 : 4

Convert 8 quarts to gallons.

1 quart = 0.25 gallons

8 quarts = 2 gallons

5 gallons : 2 gallons

5 : 2

Convert 2 meters into centimeters.

1 meter = 100 centimeters

2 meters = 200 centimeters

800 centimeters : 200 centimeters

Simplify the ratio.

4 : 1

Shelby has already knit 8 centimeters of scarf, and can knit 1 centimeter reach night. How many nights will Shelby have to spend knitting in order to knit a total of 47 centimeters of scarf?

Answers

Answer:

39 nights.

Step-by-step explanation:

If Shelby can knit 1 centimeter per night, the amount of centimeters = the amount of nights.

Equation:

47-8=39

39 nights.

Hope this helps! :) :)

a number cube numbered 1-6 is rolled 30 times and lands on an even number 18 times. How does this frequency compare to the expected frequency based on the probability of the number cube landing on an even number?

Answers

Answer:

The frequency is 3 more than expected

Step-by-step explanation:

There are 3 favourable outcomes: {2, 4, 6}

There are 6 possible outcomes: {1, 2, 3, 4, 5, 6}

probability of the number cube landing on an even number = favourable outcomes / possible outcomes = 3/6 = 1/2

If the cube is rolled 30 times, it is expected that in 1/2*30 = 15 times landed on an even number. The frequency: 18 is 3 more than expected

I honestly don't know how to explain this further

Answers

Answer:

24

Step-by-step explanation:

divide 65/8 and then multiply that by 3 and round to the nearest whole number

It’s b 24 that’s your answer

In a class full of men and women, [tex]\frac{2}{9}[/tex] of the class are women. What is the ratio of men to women in its simplest form?

Answers

Answer:

Hey there!

Let's pretend that there are only 9 people in that class. Thus, if 2/9 were women, then 2 people would be women.

Thus, 7 people would be men.

The ratio of men to women would be 7:2.

Hope this helps :)



Suppose f(x) = x2 and g(x)= (1/4x)2Which statement best compares the
graph of g(x) with the graph of f(x)?
A. The graph of g(x) is the graph of f(x) shifted į units right.
B. The graph of g(x) is the graph of f(x) horizontally compressed by a
factor of 4
C. The graph of g(x) is the graph of f(x) vertically stretched by a
factor of 4.
D. The graph of g(x) is the graph of f(x) horizontally stretched by a
factor of 4.

Answers

Answer:

B.

Step-by-step explanation:

Since the variable b is manipulated in f(x) = a(bx - h)² + k, we are dealing with horizontal compression and stretching. Since b < 1, that means the graph is being horizontally compressed.

Find the y-intercept for the parabola defined by
this equation:
y=-2x^2 – 9x + 5

Answers

Answer:

(0,5) is the Y intercept.

Step-by-step explanation:

At Y intercept, x=0.

Answer: y intercept is (0,5)

Step-by-step explanation:

4x-9x=-5x

y=-5x+5

add 5x on both sides

5x+y=5

find the sum of these polynomials (x^2-x+8) + (10x^2+7)

Answers

[tex](x {}^{2} - x + 8) + (10x {}^{2} + 7)[/tex]

[tex]10x {}^{4} - 10x {}^{3} + 87x {}^{2 } - 7x + 56[/tex]

Parents sold 275 tickets for a fundraiser at the community center. Student tickets cost $3, and adult tickets cost $5. The total value of tickets sold is $1,025. Which system of equations represents the problem? 3x + y = 275 x + 5y = 1025 y = 275 3x + y = 1025 x + y = 275 3x + 5y = 1025 y = x + 275 x + y = 1025

Answers

Answer:

3x+5y=1025

x+y=275

Step-by-step explanation:

We can use system of equations to solve this problem. Let's use x for student tickets and y for adult tickets.

Equation 1

3x+5y=1025

This equation comes from the cost of tickets. Each child ticket costs $3 and each adult ticket costs $5. The total value of tickets sold is $1025.

Equation 2

x+y=275

The total amount of tickets sold was 275.

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