two different floor plans are being offered in a new housing development. several prospective buyers from three different age groups were surveyed about which plan they preferred. find the probability that a randomly selected by her preferred plan a or was in the 40-to 49-year-old age group. (The answer is not 0.912)

Answer:

Hey there!

These ratios are equivalent.

The given ratio is 3:4

If we multiply both sides by 5, we will get 15:20.

Thus, the ratios are equivalent.

Let me know if this helps :)

Answer:

What does the tense of the underlined verb reveal about the subject?

The event took place in the past continuously but concluded prior to another past event.

The event took place in the past continuously.

The event concluded prior to another past event.

The event has been completed.

Step-by-step explanation:

Answer:

B) 2(x+4)

C) 3(3x+5)−7x–7

Step-by-step explanation:

B) 2(x+4) = 2x + 8

C) 3(3x+5)-7x-7

= 9x +15 - 7x - 7

= 9x - 7x + 15 - 7

= 2x + 8

Answer:

B and C

Step-by-step explanation:

1. B is one of the answers because when you distribute the 2, the expression simplifies to 2x+8.

2. (C) When you distribute the 3 through the parenthesis, the expression simplifies to 9x+15-7x-7. Next, subtract the like terms. 9x-7x=2x and 17-7=10. Now this simplifies the expression to 2x+8.

Answer:

y = 5x - 3

Step-by-step explanation:

ok so perpendicular just means the opposite reciprocal of the slope of the normal equation. It just means that they form a 90 degree angel when they intersect.

Answer:

1-1/3 if its 14

1/52 if its 1/4

Step-by-step explanation:

Step-by-step explanation:

a. When the sample size is below 30 or the population standard deviation is not known, use a t distribution rather than a normal distribution.

b. The confidence interval is:

CI = x ± CV × SE

where x is the sample mean,

CV is the critical value (in this case, t).

and SE is the standard error (the sample standard deviation).

For the data given, the mean is x = 4.545, and the standard deviation is SE = 3.503.

There are 11−1 = 10 degrees of freedom, and the confidence level is 98%.  For a t-table, the critical value is CV = 2.764.

So the confidence interval is:

CI = 4.545 ± 2.764 × 3.503

CI = (-5.1, 14.2)

c.  The confidence level is 98%, so 98% of these confidence intervals will contain the true population mean, and 2% will not.

Answer:A,C,E,i think F

Step-by-step explanation:

Answer:

AD

Step-by-step explanation:

You must measure the difference between A and D. To get to this answer you should try all available combinations.

Answer:

B

Step-by-step explanation:

trust me

The center of dilation of the figure M' is B thus option (B) is correct.

Transformation is rearranging a graph by a given rule it could be either increment of coordinate or decrement or reflection.

If we reflect any graph about y = x then the coordinate will interchange it that (x,y) → (y,x).

As per the give M and M'.

If we draw a line of the same corner points of M' and M then it goes from point B.

So it is clear that M is dilated with respect to point B.

Hence "The center of dilation of the figure M' is B".

To learn more about the transformation of graphs,

brainly.com/question/3099136

#SPJ5

Answer:

Step-by-step explanation:

Jason saw a shoes tat cost 41 dollars, he already ave 19 dollars in his saving account, his neighbor asked him to walk the dog for 4 dollars an hour, how many hours Jason need to walk the dog so e will be able to buy the shoes?

4x+19≥41

second one: A sign on abridge says that max. weight is 41 ton, a truck weighs 19 ton without any loads, the driver needs to pass by the bridge loading 3 boxes, how much the boxes should weigh so he will be able to pass the bridge.

3x+19≤ 41

third riddle: A cellphone company charges 19 dollars , and charge 0.05 cents for every text message. what limit of text message jason needs to keep his bill under 41 dollars.

19+0.05≤41

Answer: B: 120

Step-by-step explanation:

You multiply these choices together to get your result: 5 x 4 x 3 x 2 (x 1) = 120.

Since there are 5 choices to choose from.

Answer: n/4-1

Step-by-step explanation:

n/4 means how much each friend would have eaten if the pizza was equally divided and - 1 references to the one slice less he ate.

Answer:

Step-by-step explanation:

is this the whole question or is there answers i will edit this once i know

Answer:

b=9

Step-by-step explanation:

Answer:

B.

Step-by-step explanation:

y- int. = - 2

Slope is negative because the line is going down. So, it is  B. or C.

The shaded area is under the line, so it is ≤. The answer is B.

Answer: 2/-2 x is always on the top y is always on the bottom on the x axis it moves 2 spaces in the positive direction in the t axis it moves 2 spaces down in the negative direction

Answer:

Distance formula = √(x₂ - x₁)² + (y₂ - y₁)²

(x₁, y₁) = (1, 7) and (x₂, y₂) = (10, 3)

AB = √(10 - 1)² + (7 - 3)²

= √9² + 4²

= √81 + 16

= √97

= 9.85

Answer:

The answer is given below

Step-by-step explanation:

The equation of a quadratic function is given by:

Ax² + Bx + C where A, B and C are the coefficients of the quadratic equation. If the coefficient of x² (i.e A) is a negative value then the graph opens down, the value of C determines the y intercept.

The equation of a parabola with  y-intercept greater than 3 and opens down can be given as -2x² -6x + 4. Since the coefficient of x² is negative it opens down and C = 4, it has a y intercept of 4 > 3

Let us assume a vertical stretch of 2, the new equation becomes:

2(-2x² -6x + 4)

-4x² - 12x + 8

To solve:

-4x² - 12x + 8 = 0

A = -4, B = -12 and C = 8

Using the quadratic formula:

[tex]x=\frac{-b \pm \sqrt{b^2-4ac} }{2a}\\ x=\frac{-(-12) \pm \sqrt{(-12)^2-4(-4)(8)} }{2(-4)}=\frac{12 \pm 16.49}{-8} \\x= -3.6 \ or \ x=0.6[/tex]

Answer:

1/2 or 50%

Step-by-step explanation:

5 are lower than 60

and 5 are =/> 60

Answer:

1/2

Step-by-step explanation:

54,56,60,65,30,55,55,65,66 and 65

then place them in order from least to greatest

30,54,55,55,56,60,65,65,65 and 66

and to average they seem to grow equally over and under sixty inches.

Answer:

Revenue is the total amount producers receive after selling a good. Profit is the total amount producers earn after subtracting the production costs.

Step-by-step explanation:

Profit, or net gain, is the amount of money made after subtracting production costs.

Revenue is the total amount of money earned, or gross weight, before anything is subtracted for production costs.

Answer:

The revenue is the total amount producers receive after selling a good. Profit is the total amount producers earn after subtracting the production cost.

Step-by-step explanation:

To answer the question, let us picture that you have a business, and you sell bread.

If you sell bread for $5 per loaf, and you sell 2 loaves, your revenue will be 2 * 5 = $10.

Let's say that in order to bake the bread, you have to rent your neighbor's oven for $0.25 per hour, the flour costs $1 per loaf, and the yeast costs $1 (these are all made-up numbers). If each loaf takes one hour to bake, two loaves will cost 0.5 + 2 + 2 = $4.50 to make. Your profit will then be your revenue minus your cost, or 10 - 4.5 = $5.50.

From this scenario, we can see that the revenue is the total amount producers receive after selling a good. Profit is the total amount producers earn after subtracting the production cost.

Hope this helps!

Answer:

y = -1/4x + 1

Step-by-step explanation:

that is (0,1) and (4,0)

gradient

can be -1/4

c can be y = mx + c

we'll take anyone of the equation

1 = 0 + c

c = 1

Answer:

The simplified form of the expression is (16)⁴ or 65536

Step-by-step explanation:

The given expression to us is:

(1/16)⁻⁴

As the options given in this question are not clear enough, I'll just simpify the expression which you can compare with the given options in the question and find the best option as an answer.

We know that a negative power of number can be converted into a positive one by taking the reciprocal of that number.

It can be written as:

(16)⁴

which can be further simplified to:

65536

Answer: the answer is B

Step-by-step explanation:

16^4

Answer:

Assuming you mean area the answer is 120

Step-by-step explanation:

a right triangle has too shorter sides who are perpendicular and one longer side that you can't use. the longer side is 24 since 24>20>12

so 24 is the hypontenuse (longer side)

the two perpendicular sides are 20 and 12

the area for a triangle is b*h*1/2

the base (20) times the height (12) is 240. 240 times 1/2 is 120.

Answer:

hope its helpful to uh..

Answer:

upload ur diagram so we can solve it for u

Answer:

The 99% confidence interval of the population standard deviation is 1.7047 < σ < 7.485

Step-by-step explanation:

Confidence interval of standard deviation is given as follows;

[tex]\sqrt{\dfrac{\left (n-1 \right )s^{2}}{\chi _{1-\alpha /2}^{}}}< \sigma < \sqrt{\dfrac{\left (n-1 \right )s^{2}}{\chi _{\alpha /2}^{}}}[/tex]

s = [tex]\sqrt{\dfrac{\Sigma (x - \bar x)^2}{n - 1} }[/tex]

Where:

[tex]\bar x[/tex] = Sample mean

s = Sample standard deviation

n = Sample size = 7

χ = Chi squared value at the given confidence level

[tex]\bar x[/tex] = ∑x/n = (62 + 58 + 58 + 56 + 60 +53 + 58)/7 = 57.857

The sample standard deviation s = [tex]\sqrt{\dfrac{\Sigma (x - \bar x)^2}{n - 1} }[/tex] = 2.854

The test statistic, derived through computation, = ±3.707

Which gives;

[tex]C. I. = 57.857 \pm 3.707 \times \dfrac{2.854}{\sqrt{7} }[/tex]

[tex]\sqrt{\dfrac{\left (7-1 \right )2.854^{2}}{16.812}^{}}}< \sigma < \sqrt{\dfrac{\left (7-1 \right )2.854^{2}}{0.872}}[/tex]

1.7047 < σ < 7.485

The 99% confidence interval of the population standard deviation = 1.7047 < σ < 7.485.

Answer: 6 feet

Step-by-step explanation:

Given that a 4-foot by 8-foot rectangular piece of plywood will be cut into 4 congruent rectangles with no wood left over and no wood lost due to the cuts

Let assume that the 4 rectangles will be of the same area since they are congruent.

The area of the big rectangle will be

Area = 4 × 8 = 32

Divide 32 by 4

32/4 = 8

Suggest the two possible numbers in which their product will be equal to 8

4 and 2 or 8 and 1

If 4 and 2

The perimeter = 2L + 2B

Substitute the 4 and 2 into the formula

Perimeter = 2(4) + 2(2)

Perimeter = 8 + 4

Perimeter = 12

If 8 and 1

Perimeter = 2(8) + 2(1)

Perimeter = 16 + 2 = 18

The positive difference, in feet, between the greatest possible perimeter of a single piece and the least possible perimeter of a single piece will be:

18 - 12 = 6 feet

Answer:

Option C.

Step-by-step explanation:

If the graph of a function f(x) lies above the x-axis, then f(x) > 0.

If the graph of a function f(x) lies below the x-axis, then f(x) < 0.

From the given graph it is clear that the graph of f(x) intersect the x-axis at x=3.

Before x=3 the graph lies below the x-axis. So,

[tex]f(x) < 0[/tex] over the interval [tex](-\infty,3)[/tex].

After x=3 the graph lies above the x-axis. So,

[tex]f(x) > 0[/tex] over the interval [tex](3,\infty)[/tex].

Therefore, the correct option is C.

Answer:

 (2x  +  1)/(x^2 - 7),    x  ≠ ±√7

Step-by-step explanation:

I'm not sure if this is what your looking for.

Answer:

3) 84°

Step-by-step explanation:

The angle formed by a chord and a tangent measures half of the intercepted arc.

m<A = (1/2)m(arc) = (1/2) * (168 deg) = 84 deg

Answer:

84 degrees

Step-by-step explanation:

Answer:

(a) 26.43%

(b) 189 seconds

Step-by-step explanation:

(a) Data

Z-score is calculated as follows:

z = (x - mean)/sd

z = (240 - 228)/19

z = 0.63

We want to find the next probability P(Z>0.63), which is equivalent to 1 - P(Z≤0.63)

From table, 1 - P(Z≤0.63) = 1 - 0.7357 = 0.2643 or 0.2643*100 = 26.43%

(b) We want to find z1 at which P(Z≤z1) = 0.2. From the second table, z1 is between -2.05 and -2.06.

z = (x - mean)/sd

-2.055 = (x - 228)/19

(-2.055)*19 + 228 = x

x = 189 s