in 1900 in the United States there were 40 death from diphtheria for every 100,000 people. How many diphtheria deaths would be expected in 1900 in a town of 40,000?

Answers

Answer 1
Answer: Diphtheria once was a major cause of illness and death among children. The United States recorded 206,000 cases of diphtheria in 1921, resulting in 15,520 deaths. Diphtheria death rates range from about 20% for those under age five and over age 40, to 5-10% for those aged 5-40 years. Death rates were likely higher before the 20th century. Diphtheria was the third leading cause of death in children in England and Wales in the 1930s.

Since the introduction of effective immunization, starting in the 1920s, diphtheria rates have dropped dramatically in the United States and other countries that vaccinate widely. Between 2004 and 2008, no cases of diphtheria were recorded in the United States. However, the disease continues to play a role globally. "In 2007, (4,190 cases) of diphtheria were reported, which is likely an underestimate of the actual number of cases."


Related Questions

1. insert a digit to make numbers that are divisible by 6 if it is possible
531_5
2. insert a digit to make numbers that are divisible by 6 if it is possible
237_8

Answers

Answer:

1 There is no number that make it divisible by 6 with no decimals

2 1,4,7

Step-by-step explanation:

2 23718/6= 3953

  23748/6= 3958

  23778/6= 3963

A rectangle has a length of x and a width of 3x3 + 9 − x2. Find the perimeter of the rectangle when the length is 6 feet. Please HELP :(

Answers

Answer:

24

Step-by-step explanation:

A rectangle as four sides, and as we know, two of the sides equal each other. I would first start by drawing a rectangle. On one length on the outside of the triangle, put x. On the opposite congruent length, put x again since we know the sides are the same. You should have two blank sides left. On both of those sides, put 3x3 + 9 - x2 (I am assuming that you meant x squared whenever you said x2. Let me know if I assumed incorrectly. Because the length is 6, we know that x must be six. Now substitute everything that says x with the number six. Use parenthesis so you don't confuse it with other numbers. (6.) Now add everything up. You should be adding 3x3 + 9 - (6)2+ 3x3 + 9 - (3)2 + 6 + 6. Your final answer should be 24.

Then again, because this question could of meant 2x rather than x^2, this could be completely wrong, so if you take a picture of the exact question I will be able to help you better. Also, I'm not sure if your 3x3 is an x or an multiplication sign.  

write the equation of a line that goes through points (-2, 53) and (10, -103)

Answers

Answer:

The answer is y=-13x+27

Step-by-step explanation:

hope this helps

y²-y¹/x²-x¹

(-103)-53/10-(-2)

=-156/12

=-13

y=mx+b

-103=-13(10)+b

-103=-130+b

+130 +130

27=b

Four more than thrice number is greater than forty

Answers

Answer:

what is thrice ?

Step-by-step explanation:

Answer:

x > 12

Step-by-step explanation:

3x + 4 > 40

    - 4.      -4

3x  > 36

divide both sides by 3

x > 12

34. What is the domain? What is the range? Is the relation a function?

36. Which of the statements below best describe the slope of a line?
A) The slope of a line is the steepness of the line.
B) The slope of a line is a rate of change.
C) The slope of a line is the ratio of the vertical rise to the horizontal run.
D) All of the above statements are true.

Attached is a picture for question 34

Answers

Answer:

Step-by-step explanation:

34).

Domain: {7, 3, - 7, - 3}

Range: {2}

Yes, the relation is function.

36). Choice (D)

What’s the distance 3 1/4 and -15

Answers

Answer:

18 1/4

Step-by-step explanation:

The easiest way to do this is to start at 0 and go 3 1/4 units to your right.

Then start at 0 and go -15 units to your left.  So far I have not used a formula because I want you to see intuitively what the answer is. Then we'll do it with a formula.

The total distance is 3 1/4 + 15 = 18 1/4. Purists will hate the way I've done it, but beginners should understand what they are doing.

A formula would look like this

distanace = sqrt( x2 - x1 )^2 + (y2 - y1)^2 )

distance = sqrt( (3 1/4 -  - 15)^2 + (4 - 4)^2 )

distance = sqrt(  (18 1/4 )^2 + 0)

distance = 18 1/4

2.
7 in
Н
I
2 in
J
What is the Scale Factor?
21 in
M
6 in
N

Answers

wait i don’t see the question on the photo can you send me it

pls help me thx u bruh​

Answers

Answer:

4

Step-by-step explanation:

Rearrange the equation so that its y=5x+4. Now you know the y-intercept is 4.

Hope this helps :D

Joyce wants to buy a computer that has a price of $2500, and she decides to pay for it
with installments over 5 years. If the interest rate is 15 %, what is the monthly payment?

Answers

Answer:

1875$ in interest

Step-by-step explanation:

15%x5=75%

75%of 2,500 is 1875$.

so altogether, it's 4,375$ for the entire computer.

help fast helpleplepllpelpe

Answers

the answer would be y=-3x +4 :)

Enjoli is making cupcakes for a party. She needs 45 cupcakes but the recipe makes 15.

Strawberry Cupcake Recipe
Batches
Strawberries
1
1 and one-half cups
2

3

4



On a coordinate plane, a graph titled Strawberry Cupcake Recipe has Batches on the x-axis and cups of strawberries on the y-axis. Point A is at (1, 1.5), point B is (2, 3), point C is (3, 4.5), point D is (4, 6).

If she does not want any leftovers, which point should Enjoli use to determine the amount of strawberries she will need to make her cupcakes?
A
B
C
D

Answers

Answer:

The answer would be C

Step-by-step explanation:The answer would be C

Answer: The Answer Is C

Need help with this question

Answers

Answer:

<zay

Step-by-step explanation:

only angle <zay has the measurement of 90°

what is the missing number
5
4
3
2
please help!!!!!

Answers

Answer:

1

Step-by-step explanation:

hope this helped you!!

Idk how to do this help

Answers

Answer:

b

Step-by-step explanation:

because ik it is tell me if I'm wrong pls

Show a sketch of20/5

Answers

Answer: 4

Step-by-step explanation: 20/5 is 20 divided by 5 which is 4.

20/5=4

4x5=20

5x4=20

So the answer is 4.

Answer:

So a sketch of 20/5 well, this is an improper fraction.

Step-by-step explanation:

So this will simplify down to 4.

Help plz I really need to pass

Answers

Answer:

2.56

Step-by-step explanation:

The equation they dive u: d = 16t^2, so in the question they said what's the distance, d, if t = 0.4

So you just have to replace t with 0.4:

d = 16t^2

d = 16(0.4)^2

d = 16(0.16)

d = 2.56

You read 16 pages of an assignment in 20 minutes.At this rate, how many pages can you read in 45 minutes

Answers

Answer:

36

Step-by-step explanation:

20 mins=16 pages

40 mins=32 pages

5 mins=4 pages

In total 36 pages

The original selling price of a shirt was $45.
In a sale, the shirt is reduced to $32.50.
Calculate the percentage reduction,
Show your working

Answers

Given:

The original selling price of a shirt was $45.

In a sale, the shirt is reduced to $32.50.

To find:

The percentage reduction.

Solution:

We know that,

[tex]\text{Percentage reduction}=\dfrac{\text{Original value - Reduced value}}{\text{Original value}}\times 100[/tex]

[tex]\text{Percentage reduction}=\dfrac{45-32.50}{45}\times 100[/tex]

[tex]\text{Percentage reduction}=\dfrac{12.50}{45}\times 100[/tex]

On further simplification, we get

[tex]\text{Percentage reduction}=\dfrac{1250}{45}[/tex]

[tex]\text{Percentage reduction}=27.777778[/tex]

[tex]\text{Percentage reduction}\approx 27.78[/tex]

Therefore, the percentage reduction is 27.78%.

How do I solve this?

Answers

Answer: A symbol

Step-by-step explanation: Nothing in that picture gives a value for x

How many gummi bears are in 4 servings

Answers

i want gummy bears now :/ but 12

Please helppp!!!! I’ll give you a crown!!

But please explain the answer, Bc I want to understand.

Which is an equation for a line that passes through (0,-3) and is perpendicular to the graph of the line y=2x-3?

1. Y=-2x+3
2. Y= -2x-3
3. Y=-1/2x +3
4. Y=-1/2x-3

Answers

Answer:

the second one

Step-by-step explanation:

the last number of the equation (-3) is the y intercept, so it goes the the point (0,-3), also it has the opposite slope of y=2x-3

i hope this helps and im sorry if im wrong :(

Ariel wants to find out the most popular theme for spirit week at school. She cannot decide between two methods. Option 1: She will poll each student who leaves the gym after sports practice. Option 2: She will randomly poll three students from each first-period class. Which statement about the methods is true? Option 1 is biased. Option 2 is biased. Neither is biased. Both are biased.

Answers

Answer:

Option 1 <3

Step-by-step explanation:

Option 1: Not everyone might be in a sports class and not everyone might be leaving at the exact same time.

Option 2: This way of collecting information is not biased because it is random and includes a wide variation of people.

Using sampling concepts, it is found that the correct option is given by:

Option 1 is biased.

What is sampling?

Sampling is when a group is taken from a population to estimate a parameter or a characteristic. It has to take into account the entire population to avoid bias, which generate false results.

In this question, all students have to be considering, not just the ones who like sports practice, hence Option 1 is biased.

More can be learned about sampling concepts at https://brainly.com/question/25122507

What is the slope and y-intercept of the equation 3x -y=3

Answers

Answer:

Slope = 3

Y Intercept = 3

Step-by-step explanation:

3x - y = 3

(subtract 3x from both sides - we have to get y by itself)

-y = -3x - 3

(divide by -1 from both side - we need to make y positive)

y = 3x + 3

Calculate 2(1+4)2x (9-6)/3

Answers

the answer is 20x hope this helped :)
The answer I got was 20x

what is -2/5+(-11/10) divided by -3

Answers

Answer:

1. 0.23 (1.2)

2. (0.3) (-0.12)(2.4)

3. -5/6 x (-9/10) divided by 17/20

4. 17/18 x (-10/21) divided by 11/9

5. 24.3 divided by 3

6. 10 1/2 divided by 1 3/8

7a. 102 divided by 5/6

7b. 102 divided by 5/6 divided by 11/7

8. 1 1/2 x 1/4 (answer x 3)

2

Step-by-step explanation:

Can someone help me please

Answers

simplified the equation is Y=3/5x-4
then, you plug it into the calculator to find that the y-intercept is -4 (0,-4) and the x-intercept is 6.66777 (6.7,0)

Which expression has the smallest value? *
5 points
A. |-19|
B. |-34|
C. |22|
D. |47|

Answers

The answer is A.|-19| because the distance for zero is 19

The expression [tex]|-19|[/tex] has the smallest value.

Option A is correct.

Absolute value :

The absolute value is always positive because absolute value represent distance from zero on number line.

And distance can not be negative.

Absolute value of given number shown below,

            [tex]|-19|=19\\\\|-34|=34\\\\|22|=22\\\\|47|=47[/tex]

Thus, the expression [tex]|-19|[/tex] has the smallest value.

Learn more about the absolute value here:

https://brainly.com/question/16625390

Select the correct answer. Convert (2, pi) to rectangular form.

A. (2, 0) B. (-2, 0) C. (0, 2) D. (0, -2

Answers

Answer:

The answer is B. (-2, 0)

Step-by-step explanation:

x= 2 ⋅ cos(π) = −2

y=2 ⋅ sin(π) = 0

The rectangular coordinates is (-2 , 0) , Option B is the correct answer.

What is the equation of conversion of Polar Coordinates to Rectangular Coordinates ?

The equation for a polar point ( r, [tex]\rm \theta[/tex]) is

x = rcos [tex]\rm \theta[/tex]

y =r sin  [tex]\rm \theta[/tex]

where (x , y)  are rectangular coordinates.

The polar coordinate given is ( 2 , π)

r = 2

[tex]\rm \theta[/tex] = π

so

x = 2 cos π

x = 2 * (-1)

x = -2

y = 2 sin π

y = 2 *0

y = 0

Therefore the rectangular coordinates is (-2 , 0) , Option B is the correct answer.

To know more about Conversion into Rectangular Coordinate

https://brainly.com/question/7620157

#SPJ2

What fraction represent 0.12

Answers

Answer:

12/100

Step-by-step explanation:

Find the distance between -10.5 and 7 on a number line

Answers

7+10.5 = 17.5 is the total distance

Answer:

17.5

Step-by-step explanation:

cout up to zero then to 7

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