Simplify.
43 – 2

A
10
B
41
C
62
D
79

9514 1404 393

Answer:

  (3, 4)

Step-by-step explanation:

Put the numbers in the formula and do the arithmetic.

  Q = (A + B + C)/3

  Q = ((1, 1) +(4, 5) +(4, 6))/3 = (1+4+4, 1+5+6)/3 = (9, 12)/3

  Q = (3, 4)

The centroid is (3, 4).

Answer:

A. Negative correlation

B. Data isn't given

Step-by-step explanation:

A. A positive correlation occurs when variables that are related(not zero correlation)increase together, in other words variable a(independent variable) increases and makes variable b(dependent variable) increase too. There will be a negative correlation if the opposite happens, that is when variables that are related go in opposite directions, one increases while the other decreases. We observe from what we are told that a negative correlation occurs here since death rate from fires has likely(assumed) decreased as smoke detectors have increased.

under 21 years of age= 40     25         20  tot= 85

between 21 and 40=     35     20         30  tot = 85

       over 40=               20     30         35   tot = 85

If one of the 255 subjects is randomly selected

P (over 40) = 85/255 = 1/3

Hope this helps!

Step-by-step explanation:

The given equations are :

x-3y=-4 ....(1)

3x-9y=-12 ...(2)

Multiply equation (1) by 3.

3x-9y=-12 ....(3)

Subtract equation (2) from (3).

3x-9y-(3x-9y) = -12-(-12)

In these equations,

[tex]\dfrac{1}{3}=\dfrac{1}{3}=\dfrac{1}{3}[/tex]

It means the given system of equations have infinitely many solutions. The lines are coincident.

Answer:

her grade would be 60

Step-by-step explanation:

each question would be 20 points so you just add up what she got correct and you would get 60.im pretty sure I'm correct but if sorry.bye!

Answer:

43

Step-by-step explanation:

3x - 17 and x - 9 are on a line together, so they add up to 180.

3x + 17 + x - 9 = 180

Then, you can solve the equation:

4x + 8 = 180

4x = 172

x = 43 degrees

Answer:

c

Step-by-step explanation:

2/18

Multiple the numerator by 6.

Answer:2/3 divided by 6 would be 2/18 but if u simplified it would be 1/9

If u don’t believe me here’s a quick check

Step-by-step explanation:

Answer:

h + 7

because if Michael has 7 more than you just add 7 to Isiahs unknown

Answer:  15d-7

Step-by-step explanation:

hope it's helpful ❤❤

THANK YOU.

Answer:

7/8

Step-by-step explanation:

The coefficient of x is the slope, so 7/8.

Answer:

reflection across y translate 1 unit to the right translate 6 units down

Step-by-step explanation:

Answer:  The experimental probability and relative frequency are the same.

Step-by-step explanation:  In the question it ask you to compare the experimental probability of rolling an odd number with the relative frequency of rolling an odd number. If you compare these two things the outcome would be the same because these two terms are the same thing.

Look at the examples provided below:

"Example: you conduct an experiment where you flip a coin 100 times. ... So the experimental probability of getting tails in 100 trials is 53%, and 47 for getting heads in 100 trials."

Experimental probability

During the party, Scoundrel offered her left paw 62.5% of the time.

62.5% • 100 = 0.625 • 100 = 62.5 times.

it wouldn't make sense to offer a paw 0.5 times, so round 62.5 to 63. After 100 trials, Jenna can expect that Scoundrel will offer the left paw 63 times.

Hope this helps im new btw :D

Answer:

i thought it was b pls help :/

Step-by-step explanation:

Answer:

If you look at the different triangles in the star they give you two angles....

all of the points in a triangle would be equal and you just subtract  24 from 105

x is 24 and y is 81

Step-by-step explanation:

Answer:

j

Step-by-step explanation:

Answer: The price of adult ticket is $ 13and child ticket is $12.Hope this will help u.....

Step-by-step explanation:

Answer:

6x3=18

Step-by-step explanation:

Answer:

The expression in multiplication would be 6*3.

Step-by-step explanation:

We know this because 6+6+6=18 and 6*3=18

Answer:

f(3x + 4) = 5x + 8

⇔ f(3x + 4) = [tex]\frac{5}{3}(3x+\frac{24}{5})[/tex]

⇔ f(3x + 4) = [tex]\frac{5}{3}(3x+4+\frac{4}{5})[/tex]

⇒ f'(x) = [tex]\frac{5}{3}(x+\frac{4}{5})[/tex]

=> f(3) = [tex]\frac{5}{3}(3+\frac{4}{5})= \frac{19}{3}[/tex]

Step-by-step explanation:

Answer: 3:1

Step-by-step explanation:

Given:

Rosie and dan share some sweets.

Dan gets ¼ of sweets

To find:

Write down the ratio of the number of sweets Rosie to the number of sweets Dan gets

the ratio of the number of sweets Rosie gets to the number of sweets Dan gets is → 3 : 1.

Answer:

Reduction

Step-by-step explanation:

so, the blue shape's letters  are E, F, G, H and I.

the green shape's letters are E', F', G', H', and I'.

the letters with the '  are the ones that are after the origianal.

:) hope i helped

Answer:

enlargement i think

Step-by-step explanation:

Answer:

nub 5

Step-by-step explanation:

The Least Common Multiple, LCM, also known as the Lowest Common Multiple or  Least Common Divisor, LCD, of two numbers is the smallest natural number that can be divided evenly by either of the two numbers

Reason:

The given parameters, starting from the runner on the outer track are;

Number of spaces covered by the runner on the outer track, n₁ = 5 spaces

Number of spaces covered by the next inner runner, n₂ = 1 space

Number of spaces covered by the next inner runner, n₃ = 3 spaces

Number of spaces covered by the next runner, n₄ = 2 spaces

The numbered spot at which all the runners will be next to one another = Required

Solution:

A spot where all the runners will be next to one another is given by the Lowest Common Multiple, LCM, of their speeds or number of spaces traveled in the same time as follows;

The LCM of 5, 1, 3, and 2 = 5 × 1 × 3 × 2 = 30

Therefore, when the first runner runs 30 spaces, we have;

[tex]Time = \dfrac{30}{5} = 6[/tex]

The time taken is 6 time units

The point the runner stops is at space 30- (30 -19) = Spot 19

The distance traveled by the runner 2 at the same time is 6 × 1 = 6

∴ The distance traveled by the runner 2 at the same time = 6 spaces

The distance traveled by the runner 3 at the same time is 6 × 3 = 18

∴ The distance runner 3 travels at the same time = 18 spaces

Runner 4 travels a distance at the same time of  6 × 2 = 12

∴ Distance runner 4 travels = 12 spaces

Therefore;

The numbered spot at which all the runners will be next to one another is spot 19

Learn more here:

https://brainly.com/question/565311

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Answer:

1 false

2 true

3 true

4 false

5 true

Step-by-step explanation:

f(a) = (2a - 7 + a^2) and g(a) = (5 – a).

1 false f(a) is a second degree polynomial and g(a) is a first degree polynomial

When added together, they will be a second degree polynomial

2. true  When we add and subtract polynomials, we still get a polynomial, so it is closed under addition and subtraction

3.  true  f(a) + g(a) = (2a - 7 + a^2) + (5 – a)

Combining like terms = a^2 +a -2

4.  false   f(a) - g(a) = (2a - 7 + a^2) - (5 – a)

Distributing the minus sign (2a - 7 + a^2) - 5 + a

Combining like terms  a^2 +3a -12

5.  true  f(a)* g(a)  = (2a - 7 + a^2)  (5 – a).

Distribute

                      (2a - 7 + a^2)  (5)  – (2a - 7 + a^2)  (a)

                       10a -35a +5a^2 -2a^2 -7a +a^3

Combining like term

-a^3 + 3 a^2 + 17 a - 35

Answer:

I believe the answer is

-7y+9/6

Answer:

-7/6 y -3/2

Step-by-step explanation:

Answer:

38%

Step-by-step explanation:

Original price = $ 80

Price after reduction = $ 49.60

Reduction = 80 - 49.60  = $30.40

Percentage of decrease = [tex]\frac{reduction price}{original price}*100[/tex]

                                         [tex]= \frac{30.40}{80}*100\\\\=\frac{3040}{80}[/tex]

                                          =  38%

Answer:

38%

Step-by-step explanation:

80x0.62=49.60

Answer:

x=70

Step-by-step explanation:

Because the pair is a supplement, it should add up to 180°, so that means that (2x+6)+34=180

Answer:

[tex]x=70[/tex]°

Step-by-step explanation:

Supplementary angles are a pair of angles that form a linear pair, or a straight angle/line, and their measure sum to [tex]180[/tex]°. We are given a pair of supplementary angles with measures of [tex](2x+6)[/tex]° and [tex]34[/tex]°. Therefore, all we have to do to find the value of [tex]x[/tex] is set the sum of the given angles' measures to [tex]180[/tex]°. In an equation, that would be:

[tex]2x+6+34=180[/tex]

Solving for [tex]x[/tex], we get:

[tex]2x+6+34=180[/tex]

[tex]2x+40=180[/tex] (Simplify LHS by combining like terms)

[tex]2x+40-40=180-40[/tex] (Subtract [tex]40[/tex] from both sides of the equation to isolate [tex]x[/tex])

[tex]2x=140[/tex] (Simplify)

[tex]\frac{2x}{2} =\frac{140}{2}[/tex] (Divide both sides of the equation by [tex]2[/tex] to get rid of [tex]x[/tex]'s coefficient)

[tex]x=70[/tex]° (Simplify)

Hope this helps!

Answer:

k=40

Step-by-step explanation:

subtract 12 from k we would get 28

Answer:

it is c

Explanation:

hopes it helps

Answer:

9. im not sure though

Step-by-step explanation: