The American Heart Association is about to conduct an anti-smoking campaign and wants to know the fraction of Americans over 33 who smoke. Step 1 of 2: Suppose a sample of 1267 Americans over 33 is drawn. Of these people, 913 don't smoke. Using the data, estimate the proportion of Americans over 33 who smoke. Enter your answer as a fraction or a decimal number rounded to three decimal places.

Answer:

1) x+y=50

2) 5x+2y=200

3)2x+4y=200

Hope this helps!

Answer:

x+3=8, 2x-8=2, and 4x-4=16

Step-by-step explanation:

Answer:P = $ 25,375.00

Step-by-step explanation:

P = 4060 / ( 0.08 × 2 ) = 25375

P = $ 25,375.00

Answer: 14 feet 4 inches

Step-by-step explanation:

Given: The length of the first table = 7 feet 7 inches

The length of the second table = 6 feet 9 inches

The total length of two tables = 7 feet 7 inches + 6 feet 9 inches

= (7+6) feet (7+9) inches

=13 feet 16 inches

Since 1 feet = 12 inches

The total length of two tables = 13 feet+ (12 inches +4 inches)

=13 feet +( 1 feet +4 inches)

= 14 feet 4 inches

Hence, the total length of the two tables =  14 feet 4 inches

Answer:

  (b)  (x, y) ⇒ (-x, y); (x, y) ⇒ (x + 1, y + 1)

Step-by-step explanation:

A graph shows the image is consistent with reflection over the y-axis

  (x, y) ⇒ (-x, y)

and translation right 1, up 1

  (x, y) ⇒ (x +1, y +1)

These transformations are listed in the second choice.

__

In the attachment, the original image is blue, the reflected image is purple, and the final translated image is red.

Answer: look at the picture and I can’t solve y for you.

Step-by-step explanation: Hope this help :D

Answer:

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Answer:

160 ft, 250ft

Step-by-step explanation:

Rectangular base:

Width = w

length =2w - 70

Perimeter = 820 ft

2*(length + width) = 820

2*(2w - 70 + w ) = 820

2 *(2w + w - 70) = 820     {Combine like terms}

2* (3w - 70) = 820

3w*2 - 70*2 = 820

6w - 140  = 820    

6w  = 820 + 140     {Add 140 to both side}

6w = 960     {Divide both sides by 6}

w = 960/6

w = 160 ft

length = 2*160 - 70

          = 320 - 70

          = 250 ft

Answer:

hi

Step-by-step explanation:

i think so...

[tex]\pi \times {r}^{2} \times \frac{h}{3} \\ 3.14 \times 3.5 \times \frac{9}{3} \\ = 32.97[/tex]

hope it helps

bye

Answer:

[tex]3x^2(5y^2-xy+25x^2)\\[/tex]

Step-by-step explanation:

[tex]15x^2y^2-3x^3y+75x^4\\\\3x^2(5y^2-xy+25x^2)\\[/tex]

3x² is the only facor with all 3 of the terms.

Answer:

The answer is C

Step-by-step explanation:

48/112 = 0.4285

convert and round it

0.4285 = %42.9

The percent of the 7th grade students were in favor of wearing school uniforms is 42.9%.

From the given table,

7th grade students who are in favor of wearing uniform = 48

Total 7th graders = 112

So, the percent of the 7th grade students were in favor of wearing school uniforms

= 48 / 112 x 100

= 12 / 23 x 100

= 42.85%

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Answer:

the anser is 88 i think

Step-by-step explanation:

beacuse 5.8=40

              5.8=40

               1.8=8

or it could be

264

Step-by-step explanation:

Figure on the left: 5x5x8 = 200

Figure on the right: 8x1x8 = 64

200+64=264

Answer:

264

Step-by-step explanation:

Figure on the left: 5x5x8 = 200

Figure on the right: 8x1x8 = 64

200+64=264

Answer: 10 x - 15

Step-by-step explanation:

Answer:

a nonlinear function I think because it's a quadratic one?? kinda

Answer: y = 3 or y=7

Step-by-step explanation:

[tex]y^{2} -10y+21[/tex]

what 2 factors of 21 can equal 10 when added together (1*21- no 3*7- yes)

Factor

[tex](y-3)(y-7)[/tex]

y-3=0

y=3

or y-7=0

y=7

Answer:

Keenan's z-score was of 0.61.

Rachel's z-score was of 0.81.

Step-by-step explanation:

Z-score:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4.9 points.

This means that [tex]X = 80, \mu = 77, \sigma = 4.9[/tex]

So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{80 - 77}{4.9}[/tex]

[tex]Z = 0.61[/tex]

Keenan's z-score was of 0.61.

Rachel scored 78 points on an exam that had a mean score of 75 points and a standard deviation of 3.7 points.

This means that [tex]X = 78, \mu = 75, \sigma = 3.7[/tex]. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{75 - 78}{3.7}[/tex]

[tex]Z = 0.81[/tex]

Rachel's z-score was of 0.81.

Answer:

1 1/14

you have to multiply by the reciprocal of the second fraction

Answer:

7

Step-by-step explanation:

Uhh 7 divided by 1 is 7?

Answer:

7

Step-by-step explanation:

There are 7 gallons in a 7-gallon container of milk.

The correct answer is A: -2 + 2 = 0

Answer:

No solution

Step-by-step explanation:

Answer:

4%

Step-by-step explanation:

1/25 is equal to 0.04

To convert a decimal to a percent... move the decimal 2 spots to the right

This will give you 4%

Hope this helps!

HOW TO CONVERT 1/25 TO A PERCENTAGE?

To write 1/25 to a percentage, you must remember that 1 equals 100% and that what you must do is multiply the number by 100 and add the symbol% at the end.

[tex] \bold{1 /25 * 100 = 0.04 * 100 = 4\%}[/tex]

And finally we have:

[tex] \bold{1/25 \: a \: percentage equals 4\%}[/tex]

Answer:

answer

Step-by-step explanation:

5%

.......................

Answer:

D

Step-by-step explanation:

Let the number be n.  Then "a number divided by 22" would be n/22 (Answer D)

The number divided by 22 can be written as x / 22, so option D is correct.

It is a fundamental operation in mathematics where you divide a number into smaller parts.

Given:

A number divided by 22,

Here, the divisor = 22

Assume the number is x

Then, dividend = x

Thus, expression can be written as,

dividend/divisor = x / 22

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Answer:

where is the picture???????????

Answer:

[tex]x^2 + (y-60)^2 = 30,625[/tex]

Step-by-step explanation:

There are 42 carts, so there is 42 spaces in between them; if one of those spaces are 25pi/3 feet long, then 42 of them would be 25*42*pi/3 = 350pi (Perfect! no fractions)

350pi is the circumference. Now if we plug that into the circumference equation we get:

C = 2pi*r

350pi = 2pi*r

Divide both sides by pi to get rid of it

350 = 2r

Divide both sides by 2

r = 175 feet

So the new equation to graph it is:

x^2+y^2 = 175^2 = 30,625

We also know that the center of the Ferris wheel has to be at least 60 feet from the ground. Since the radius is more than that, a good bit of the Ferris wheel has to be underground OR we can make it higher (keyword: at least) if we want it to be above ground. I'll do the equation for underground since it more closely represents the question.

subtracting a number from y, shifts the graph up that much so:

[tex]x^2 + (y-60)^2 = 30,625[/tex]

I can't really draw it electronically but I can graph it:

Answer:

20 questions

Step-by-step explanation:

20 · 0.55 = 11

Answer:

The slope is [tex]\frac{5}{4}[/tex]

Step-by-step explanation:

Slope of a dataset:

The slope of a dataset, having two points, is given by the change in y values divided by the change in x values

In this question:

Two points:

x = 0, y = 8

X = 4, y = 13

The slope is:

[tex]m = \frac{13 - 8}{4 - 0} = \frac{5}{4}[/tex]

The slope is [tex]\frac{5}{4}[/tex]