Two teachers compared the mean absolute deviation of the scores from the semester exam they gave to their students. Mrs. Alvarez's scores had a lower mean absolute deviation than Mr. Crawford's scores. What can we conclude? * 10 points A. Mrs. Alvarez's scores were lower than Mr. Crawford's scores. B. Mrs. Alvarez's scores were more spread out than Mr. Crawford's scores. C. Mrs. Alvarez's scores were less spread out than Mr. Crawford's scores. D. Mrs. Alvarez's scores were higher than Mr. Crawford's scores.

Answer:

No, it is not correct. You should divide by 21 and 3.

Step-by-step explanation:

3x=21

x=7

Q 1)

3(x + 5) = 36

3x + 15 = 36

3x = 36 - 15

3x = 21

x = 21/3

x = 7

Verification:

3(x + 5) = 36

3(7 + 5) = 36

3(12) = 36

36 = 36

Hence proved that x = 7

Answer:

y = 1300 - 100x

Step-by-step explanation:

Zachary purchased a computer for $1300

The first step is to calculate the purchase he paid after 2 months

= 1,300-1,100

= $200

Then the purchase after 1 month is

= $200/2

= $100 per month

The purchase made after 4 months is

= 1,100-900

= $200

The purchase after a month is

= $200/2

= $100 per month

Therefore the equation that models the balance y after x months is

= initial amount of payment plan - amount per month

y= 1,300 - 100x

Answer:

Rational

Step-by-step explanation:

An irrational number is any number that cannot be turned into a fraction. 7 can be turned into a fraction.

Answer:

z=90

Step-by-step explanation:

Answer:

12x+11 = 47         (reason: vertical angles)

12x = 36

x = 3

12(3)+11 + w = 90                (reason: right angles)

36+ 11 + w = 90

47+w = 90

w = 43

43+z+47 = 180                 (reason: linear pair)

90+z = 180

z = 90

Answer:

584,615

Step-by-step explanation:

its rounded by the whole number

Belmont will produce 584,615 metric tons of CO₂ after 6 years, growing at the rate of 10% every year, currently emitting 330,000 metric tons of CO₂.

The value of most things is not constant in this world. If we observe correctly, the value of some of the things rises, while others fall. If there is a rise, we call it growth.

Growth can be determined by the formula,

V = V₀(1+r)ⁿ, where V is the final value, V₀ is the initial value, r is the rate and n is the time.

In the question, we are given that Belmont is a growing industrial town. Every year, the level of CO2 emissions from the town increases by 10%.

We are asked that if the town produced 330,000 metric tons of CO2 this year, how much will be produced 6 years in the future.

As we see that the amount of CO₂ emission is growing, to find the amount of CO₂ emitted in the 6th year, we use the growth formula,

V = V₀(1+r)ⁿ, where V is the final value, V₀ is initial value, r is rate, and n is the time period.

Here, V₀ = 330,000 metric tons, r = 10%, n = 6 years.

∴ V = 330,000(1 + 10%)⁶

or, V = 330,000(1.1)⁶ = 330,000*1.771561 = 548615.13

or, V = 548615 metric tons (rounded to nearest whole number).

∴ Belmont will produce 584,615 metric tons of CO₂ after 6 years, growing at the rate of 10% every year, currently emitting 330,000 metric tons of CO₂.

Learn more about Growth at

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Answer:(that was a joke)

1.) acute

2.) right

3.) obtuse

4.) acute

5.) obtuse

6.) right

Step-by-step explanation:

if hes doing advanced stuff like isosceles equilateral and that then im sorry for the answer.

Step-by-step explanation:

Probability is the ratio of the expected outcome (event) to the total outcome (sample space)

Probability = expected outcome/total outcome

If Playing cards numbered from 1 to 20 are mixed thoroughly and kept it in a box, the total number of sample space is 20

1) To calculate of getting a prima number.

Events = {2, 3, 5, 7,11,13,17,19}

n(events) = 8 elements

Pr(selecting a prime) = 8/20 = 2/5

2) If a factor of 20 is selected

Factor of 20 F = {2, 4, 5, 10, 20}

n(F) = 5

Pr(factor of 20) = 5/20 = 1/4

3) A composite number are 2 digits numbers.

Composite number C = {10,11,12,13,14,15,16,17,18,19,20}

n(C) = 11

Pr(a composite number) = 11/20

4) For multiple of 3.5

Multiple of 3.5 M = {3.5, 7.0, 10.5, 14.0, 17.5}

n(M) = 5

Pr(multiple of 3.5) = 5/20 = 1/4

5) For perfect squares

Perfect squares P = {1, 4, 9, 16}

n(P) = 4

Pr(perfect squares) = 4/20 = 1/5

Answer:

x=17 y=128

Step-by-step explanation:

x-cows

y=chicken

x+y=145

4x+2y=324

x=145-y

4(145-y)+2y=324

580-4y+2y=324

580-2y=324

580-324=2y

256=2y

y=128

x=145-128

x=17

The expression is

[tex]\\ \rm\Rrightarrow x+(1+0.10)x[/tex]

[tex]\\ \rm\Rrightarrow x+1.10x[/tex]

Answer:

About $75.08

Step-by-step explanation:

79.66-[{(79.66/100)x12}-{(79.66/100)x6.25}]

79.66-[{0.7966x12}-{(79.66/100)x6.25}]

79.66-[{0.7966x12}-{0.7966x6.25}]

79.66-[9.5592-{0.7966x6.25}]

79.66-[9.5592-4.97875]

79.66-4.58045

75.07955

75.08

Answer:

y=mx+b

Step-by-step explanation:

2000x+750y=c

multiply by the reciprocle

awnser....

Answer:

m= 60. y= 60x + 750

Step-by-step explanation:

He increased his rate $60/yr shown over a 10 yr span.

Answer:

f=88

g=60

h=32

x=17

Step-by-step explanation:

Answer: the answer is:

(9,0)

(11,2)

(15,6)

(18,9)

Answer: The answer is C. Yes, because it passes the vertical line test.

Hope this helps.

Answer:

C. Yes, becuase it passes the vertical line test.

Step-by-step explanation:

Using the vertical line test, you can clearly see the function has one input for exactly each output.

Answer:

100 red balls and 20 blue balls.

Step-by-step explanation:

So to find out what you need to multiply the ratio by to get the answer, you add 10 and 2. That's 12. 120/12 is 10. 10:2 times 10 = 100: 20, so there are 100 red balls and 20 blue balls.

Answer:

A

Step-by-step explanation: You have two variables, the time and the number of cartons. If time wasn't a variable here, the number of cartons would remain static. You need time, otherwise there would be no change. Now that you know there are two variables, the last two choices must not be correct. Between A and B, the difference is that A says every dip is a purchase and B says every horizontal line is a purchase. Obviously, a horizontal line doesn't mean a purchase; it means the time gone WITHOUT  a purchase. This leaves you with A.

Answer:

8.06

Step-by-step explanation:

use distance formula

Answer:

x = 3 +√43, x = 3 - √43

Step-by-step explanation:

x^2 - 6x - 34 = 0

move the 34 across

x^2 - 6x = 34

take -6 and divide by two, then square it

(-6/2)^2 = 9

add the product to your equation

x^2 - 6 + 9 = 34 + 9

solve

(x - 3)^2 = 43

x - 3 = ± √43

x = 3 ± √43

Answer:

Step-by-step explanation:

You need to construct the ellipse then you would be able to find the standard form

Answer:

[tex]m=\frac{17}{37}[/tex]

Step-by-step explanation:

When given two coordinates, you must use this formula to find the slope of a line:

[tex]m= \frac{y_{2} - y_{1}}{x_{2}-x{1}}[/tex]

where m is your slope.

So, plug in your coordinates. Remember, a coordinate is denoted by (x,y). So, for example, your [tex]x_{1}[/tex] would be -18 and your [tex]x_{2}[/tex] would be 19.

[tex]m =\frac{4--13}{19--18}[/tex]

[tex]m =\frac{17}{37}[/tex]

And that would be your slope. (Answer choice D.)

Answer:

What's the question very confused on how to answer...

Step-by-step explanation:

Answer:

y=3/4 x- 1/2

Step-by-step explanation:

Answer:

I don't really know what you mean so I would say to just look on the tag but if you gave more info then I could help you out

Answer:

1st is correct

Step-by-step explanation:

Like charges repel each other.

HOPE THIS HELP YOU ,FOR ANY QUESTION PLEASE ASK ME

[tex] {n}^{2} - n - 56 = [/tex]

[tex](n - 8)(n + 7)[/tex]

_____________________________________________

[tex]a {x}^{2} + bx + c = 0[/tex]

[tex]delta = {b}^{2} - 4ac[/tex]

[tex]x(1) = \frac{ - b + \sqrt{delta} }{2a} \\ [/tex]

[tex]x(2) = \frac{ - b - \sqrt{delta} }{2a} \\ [/tex]

_____________________________________________

[tex] {n}^{2} - n - 56 = 0[/tex]

[tex]delta = ({ - 1})^{2} - 4(1)( - 56)[/tex]

[tex]delta = 1 + 224[/tex]

[tex]delta = 225[/tex]

Thus ;

[tex]n(1) = \frac{ - ( -1) + \sqrt{225} }{2 \times 1} \\ [/tex]

[tex]n(1) = \frac{1 + 15}{2} \\ [/tex]

[tex]n(1) = \frac{16}{2} \\ [/tex]

[tex]n(1) = 8[/tex]

[tex]n(2) = \frac{ - ( - 1) - \sqrt{225} }{2 \times 1} \\ [/tex]

[tex]n(2) = \frac{ 1 - 15}{2} \\ [/tex]

[tex]n(2) = - \frac{14}{2} \\ [/tex]

[tex]n(2) = - 7[/tex]

[tex]n(1) = 8[/tex]

[tex]n(1) - 8 = 0 \: \: \: (\alpha )[/tex]

[tex]n(2) = - 7[/tex]

[tex]n(2) + 7 = 0 \: \: \: \: \: ( \beta )[/tex]

_____________________________________________

[tex] \alpha \times \beta = [/tex]

[tex](n - 8)(n + 7)[/tex]

Responda:

181 pessoas / km²

Explicação passo a passo:

Dado que:

Densidade populacional = razão entre o número de habitantes e a área

Número de habitantes em São Paulo = 45 milhões

Área do estado de São Paulo = 248210 km²

Portanto, a densidade populacional de São Paulo:

Número de habitantes / área

45.000.000 pessoas / 2.48210 km²

181,29809 pessoas / km²

= 181 pessoas / km² (aproximadamente

The transformation of the expression [tex]x^{2} -2x-2[/tex] is [tex](x-1)^2 -3[/tex].

Given equation is: [tex]x^{2} -2x-2[/tex]

The expansion of (a+b)² is a²+b²+2ab.

We can rewrite the given expression as:

[tex]x^{2} -2x+1 -3[/tex]..........(1)

We know that [tex]x^{2} -2x+1[/tex] is the expansion of [tex](x-1)^2[/tex].

So, (1) can be written as:

[tex]x^{2} -2x+1 -3[/tex]

[tex](x-1)^2 -3[/tex]

So, [tex]x^{2} -2x-2 = (x-1)^2-3[/tex]

Therefore, the transformation of the expression [tex]x^{2} -2x-2[/tex] is [tex](x-1)^2 -3[/tex].

To get more about polynomials visit:

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Answer:

The answer is B. (x-1)^2 - 3

Step-by-step explanation:

HOPE THIS HELPS! JUST HELPING PEOPLE IN NEED!

Answer:

[tex]6 x - 10 \\ \\ = 2(3x - 5)[/tex]

# Bora 7#

factorise 6x - 10

2(3x - 5)

=> 6x - 10

Find a common factor,

=> 2(3x - 5)

This equation cannot be factored further.

So, 2(3x - 5) is the answer.